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Ursa Astronomical Association
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taivaanvahti(at)ursa.fi

Ursa Astronomical Association

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Only observations that have a description and at least one image attached.

Comet with naked eye coma ZTF

29.1.2023 at 02.30 - 06.06 - Uurainen (III)
Aleksi Ruotsila, Jyväskylän Sirius

Sacrificing a reasonable sleep pattern and a night's sleep, I left early in the morning to photograph this comet when I had the chance (weekend, moon setting, a suitable opening in the clouds). The comet's tail was a fairly steadily moving jet during this viewing interval, while a couple of days ago when I was photographing it there was much more life. Undeniably an interesting and dynamic object to photograph. For the comet, almost 3 hours of exposure, and for the stars I used the same photos from just an hour ago.

Binocular comet ZTF

29.1.2023 at 02.04 - Kurikka (II)
Timo Nevala, Ursa (Länsi-Suomi)

I'm participating in Taivaanvaht's comet photo cavalcade with this interpretation of the subject. I have aimed for a realistic binocular view here. The kind of sight that the casual visual observer encounters when he grabs the Nearest binoculars and goes outside in the freezing cold to look at the sky with them. The nucleus of the comet can be found well, and enough coma is visible that the object can be recognized as a comet. But the tail is not separated. And no colors either (at least I can't tell).

Binocular comet ZTF

29.1.2023 at 02.00 - 02.20 - Tampere (II)
Kalle Helenius

As a continuation of the statistics, Test samples also from Tampere. The pile revealed a little something like a detail, but otherwise the fresh white snow cover in cooperation with the lamps and the moon blocked the view - even before the clouds arrived.

Images: 2 pcs

Binocular comet ZTF

29.1.2023 at 01.34 - Helsinki (I)
Pentti Arpalahti

The conditions were not ideal, but the Weather Report promised that it would clear up a bit for a couple of hours. The moment was right, because a raft of clouds from the northwest covered the sky around two o'clock. Otava and Pohjantähti (mag. approx. 2) somehow stood out, so I pointed the camera almost to the zenith half-blindly between Otava and Pohjantähti. Two frames were hit well enough by the comet and I combined them to improve the noise. After all, stars up to magnitude 9 stood out with the camera. Judging from the top 7-star group as a reference, the brightness of the comet is ab...

Comet with naked eye coma ZTF

29.1.2023 at 00.39 - 00.55 - Kangasala, Sahalahti (II)
Jorma Mäntylä

Comet ZTF was found again in little Otava. The pictures did not turn out as good as on 26.1. Seeing was not as good and the moonlight has already started to disturb. Still a handsome tail. The movement during 10 min is distinguished from the two images 0.36 and 0.46. Let's follow up. Edit. I processed the images with Deep Sky Stacker. The image now contains 6x30 s RAW images. The comet moved so slowly that the stacking was successful.

Images: 3 pcs

Binocular comet

28.1.2023 at 23.30 - 00.00 - Karstula (III)
Jussi Halttunen, Jyväskylän Sirius

Comet ZTF was visible bright in the northern sky in the constellation Ursa Minor near the star Kochab. Shot with a 15 second exposure through a 16" mirror telescope. Canon EOS 6D.

Comet with naked eye coma ZTF

28.1.2023 at 22.45 - 23.00 - Nokia (I)
Tapio Lahtinen, Tampereen Ursa

I got a tip about the observation site in the direction of Nokia and went to check the place. It was reasonably good in terms of light pollution - although the Northeast is naturally the worst because of Tampere. I had a really light and comfortable person's equipment with me. I controlled the tripod wirelessly with my laptop and the paperback also wirelessly with my mobile phone and from the comfort of a warm car :) Edit: 4th picture is a grainy cell phone picture looking north

Images: 4 pcs

Binocular comet ZTF

28.1.2023 at 19.05 - Kurikka (II)
Marko Myllyniemi, Lakeuden Ursa

The filming of Comet C/2022 E3 ZTF was hectic today, because I only had time to take three 20s exposures, when the clouds rolled in and there was no way to continue filming. Well, that's better than nothing.

Binocular comet ztf

28.1.2023 at 00.45 - 01.20 - Helsinki (III)
Pertti Ankkuri, Ursa (Helsinki)

Well, that comet was found in the sky of Helsinki when you looked really hard. Light pollution and hazy air added enough challenges. The picture was taken with a basic system camera and (18-400mm) 400mm lens, aperture f/6.3, ISO 4000, 15s exposure. The image has been edited with Rawtherapee 5.9 to make the comet stand out better. The video clip has 74 images that have been assembled in Openshot v.3.0. The subtle movement of the subject compared to the stars in the background stands out.

Images: 2 pcs

Comet with naked eye coma ZTF

27.1.2023 at 23.26 - 23.31 - Rusko (I)
Mikko Peussa, Ursa (Länsi-Suomi)

Even the fourth night's view of the comet now that I can say for sure that the fog spot was also seen with the eyes. It does require a clear sky and a quarter of an inch to get used to the dark. In the future, the moon will be quite a negative factor.

Images: 2 pcs

Comet with naked eye coma ZTF

27.1.2023 at 22.27 - 22.47 - Fregenal de la Sierra, Espanja (I)
Tapio Lahtinen, Tampereen Ursa

Following the comet, I tried to get a better view of the tail with longer exposures. It is really challenging to take a mosaic of even two pieces from a fast-moving comet. And there was no other choice but to destroy the stars.

Binocular comet ZTF

27.1.2023 at 22.05 - Helsinki (I)
Matias Takala, Kuopion Saturnus

This comet was also seen in the light pollution of Kallio. If you wanted a somehow more impressive result, you would have had to search for a darker location. I think I just enjoy other people's shots.

Comments: 4 pcs

Binocular comet ZTF

27.1.2023 at 21.00 - 22.00 - Askola (IV)
Ville Wiik

A quick test to capture C/2022 E3 with an old 300mm Nikkor. The tail also stands out a little from there :)

Images: 3 pcs

Binocular comet ZTF

27.1.2023 at 20.30 - Järvenpää (III)
Toni Veikkolainen, Keski-Uudenmaan Altair

On the outskirts of Järvenpää, there was so much man-made light in the sky that you couldn't get a very brilliant shot of the brightest comet in the sky with camera optics. Mostly the coma came up.

Binocular comet ZTF

27.1.2023 at 20.30 - Nurmijärvi (I)
Emma Bruus, Ursa (Etelä-Suomi)

These conditions of observation would not be remembered at the evening campfire of Cygnus. And the poets wouldn't come right now to compose ethereal ballads about 'the magic night when the stars shone brightly'. A certificate of honor would not be awarded for blustery weather. And no medals for Klaukkala's light pollution conditions. A mass of clouds rolled in from the southeast, like an alligator from the deepest hole in a suburban sewer in Vantaa. But it didn't help to complain, this was the best weather for a month. Maybe even for two months. There were no guarantees abo...

Images: 2 pcs

Binocular comet ZTF

27.1.2023 at 20.09 - Taipalsaari (II)
Heikki Pyysalo, Ursa (Helsinki)

The sky opened on Taipalsaari just in time after a long 'darkness'.

Binocular comet

27.1.2023 at 19.00 - Mäntyharju (I)
Markku Siljama, Ursa (Etelä-Suomi)

Comet in the lower parts of Ursa Minor. The bright star from the comet in the 10 o'clock direction is Kochab. Bright moon in the south, thin fog in the air, -8 degrees, calm.

Binocular comet ZTF

27.1.2023 at 19.00 - 19.40 - Mäntsälä, Ohkola (III)
Teppo Laitinen

I tried to photograph this comet even though there was a fog cloud a few meters high and the crescent moon lit up the sky. I got a couple of tails on the right in the picture, but I think there is one more on the lower left. The video is 34 min. movement.

Images: 2 pcs

Binocular comet ZTF

27.1.2023 at 04.00 - 04.50 - Kirkkonummi (III)
Harry Rabb, Kirkkonummen komeetta

Comet C/2022 E3 (ZTF) at 4 am, 27 January 2023 in Kirkkonummi. Telescope SkyWatcher 80/600ED. Camera Canon Eos 80Da. One 3-minute exposure, Iso 1600. My Astroweb site also has a video sequence of the motion during 52 minutes: https://sites.google.com/view/tour-to-the-night-sky/frontpage/now-on-the-sky Hi Harry

Images: 2 pcs

Comet with naked eye coma ZTF

27.1.2023 at 03.40 - 04.00 - Uurainen (II)
Erkki Rauhala

The night before, I already photographed this comet, but the clouds came in front. In the morning I woke up and then the sky looked clear. It wasn't exactly the best conditions, because the air seemed to have moisture at times. The comet's head was easily distinguished and thus the camera's orientation was also fast. There is about 10 minutes of joint exposure here 500mm/4 and ISO 3200.

Comet with naked eye coma ZTF

27.1.2023 at 03.27 - 03.32 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

While I was photographing the comet with Vespera and eVscope, I was seeing the comet with the naked eye. I also tested taking a picture with my phone and I succeeded.

Binocular comet ZTF

27.1.2023 at 02.35 - 04.25 - Mänttä-Vilppula (IV)
Jukka Laakso

In the end, it was moderately clear here as well for photographing the comet. Even with binoculars, the thud stood out. A good 100 minutes of exposures from the front (minus cloud fines) were accumulated with the 135-millimeter. Sum and median stack images and a star-locked median stack with the Little Bear's Pherkad and Pherkad minor vas. in the upper corner.

Images: 3 pcs • Comments: 3 pcs

Comet with naked eye coma ZTF

27.1.2023 at 02.28 - 06.09 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

The clock was waking me up at two in the morning and I photographed the comet until six in the morning. I took exposures from two to five minutes, testing different settings. Here are two pictures and one video. The tail was visible directly on the screen without any processing. During the night, the comet's movement is perfectly visible in the video.

Images: 3 pcs

Comet with naked eye coma ZTF

27.1.2023 at 02.07 - 03.16 - Fregenal de la Sierra, Espanja (I)
Tapio Lahtinen, Tampereen Ursa

I even took a short series of pictures of the comet from Spain so that the tripod followed the movement of the comet (and not the stars normally). The tail can really be seen very far with longer exposures. Have to try how far.

Images: 3 pcs • Comments: 1 pcs

Binocular comet ZTF

27.1.2023 at 01.17 - 01.21 - Siikalatva (I)
Jarmo Kalaoja, Ursa (Pohjois-Suomi)

The comet was visible in the binoculars today for some reason even a little weaker than at the beginning of the week. In the freezing weather, this time I tried shooting with the camera's burst shooting until the telescope was completely fogged up... The results were a preliminary experiment with Deep sky stacker stacking and a small improvement of the brightness after that, not very good processing programs installed on the computer yet. I tried a hundred tails, it's hard to tell if the hemispherical veil shown in the picture is real or the result of image manipulation.

Images: 4 pcs

Binocular comet ZTF

27.1.2023 at 00.40 - Akaa
Markku Ruonala

The comet was easily found near familiar stars. I described the comet with different variations and I think this 1.5 minute single frame was the best. The focal length was 200 mm and the camera was on the tracking device. The observation conditions were good, because of that I tried to see the comet's head with my naked eyes, but I dare not say for sure, the comet had too clear a place in the sky and the vision could have been a bit of an imagination.

Comments: 1 pcs

Comet with naked eye coma ZTF

27.1.2023 at 00.17 - 00.48 - Kangasala (IV)
Tapio Lahtinen, Tampereen Ursa

I was again last night in the landscapes of Kangasala, photographing a comet. It was great - moderately cold and the moon didn't bother me too much. Here's the first taste. A surprisingly good result when you take into account that 45 s exposures shot on an Alt-az tripod and without guidance. The guidance tricks were also included, but I didn't get around to adjusting them as the stars remained round even without them. Of course, there will be twists, but the software knows how to spin these. Edit: I managed to screw up a little more animation. AstroArt 8 with the latest SP has mad...

Images: 2 pcs

Comet with naked eye coma ZTF

27.1.2023 at 00.15 - 01.30 - Lieto (I)
Matti Helin, Ursa (Länsi-Suomi)

The weather was pretty good, the ground was black and the sky was relatively foggy. The light pollution was a bit of a problem, but in the end the picture turned out to be ok. Image made of 20 images, each exposure time 8-10 seconds. The pines from the single photo are attached separately to the stack. Baking DS pictures is not a familiar task at all, so the adjustments were made with a so-called mutt.

Images: 2 pcs • Comments: 3 pcs

Comet with naked eye coma ZTF

27.1.2023 at 00.00 - 04.00 - Äänekoski (III)
Aleksi Ruotsila, Jyväskylän Sirius

I drove to the slightly more remote Bortle 3 location to photograph this comet. The cloud rafts teased for a long time, but in the end the entire morning was clear. The comet's head of the eyes stood out only with difficulty after a long time of getting used to it. Image size of the larger image: 7 degrees 55 min x 4 degrees 57 min. In the video, the flickering of the comet's tail near the comet is due to the processing of the images.

Images: 3 pcs

Binocular comet ZTF

26.1.2023 at 23.50 - 00.10 - Ulvila (III)
Juha Ojanperä, Porin Karhunvartijat

Comet C/2022 E3 (ZTF) as seen from the Ulvila observatory. In light-polluted conditions, the comet was mostly only visible as a round, hazy coma. No visual tail was seen. It is difficult to tell where the comma begins and ends, therefore determining the diameter of the comma is difficult. The diameter of the coma is conservatively estimated from the drawing. In the middle of the coma, a bright central brightness. The brightness of the coma increases strongly towards the center. The comet was moving quite quickly at the moment of observation and the movement could be easily detected during my o...

Images: 2 pcs

Binocular comet ZTF

26.1.2023 at 23.40 - Laukaa (III)
Jesse Kyytinen, Ursa (Pohjois-Suomi)

The comet was easy to find and even the tail stands out in the picture.

Binocular comet ZTF

26.1.2023 at 23.40 - 23.41 - Rusko (II)
Mikko Peussa, Ursa (Länsi-Suomi)

Third night observing the comet. Maybe it was already visible with the eyes when the gaze was appropriately directed past the object, but I can't be completely sure.

Comet with naked eye coma ZTF

26.1.2023 at 23.30 - Kuusamo (II)
Voitto Pitkanen, Ursa (Pohjois-Suomi)

The comet was reasonably well visible and movement was noticeable in the animation for half an hour.

Images: 2 pcs

Binocular comet ZTF

26.1.2023 at 23.12 - 00.09 - Valtimo (IV)
Veli-Pekka Häkkinen

Here's our own version of the brightest comet. Normal equipment and software. Feels cool it was -11C.

Binocular comet ZTF

26.1.2023 at 23.00 - 23.59 - Kangasala, Sahalahti (II)
Jorma Mäntylä

After three weeks of clouds and fog, the sky finally cleared. Comet ZTF stood out perhaps to the naked eye, or at least there was something extra under little Otava. A handsome greenish comet stood out on the camera and tracking stand. Edit. I reprocessed the image and made the tail stand out better.

Comet with naked eye coma ZTF

26.1.2023 at 23.00 - 01.30 - Lieksa (I)
Satu Juvonen, Ursa (Itä-Suomi)

I also went to see what the comet looks like. The object was easily found using the Ursa star map and was visible to the naked eye as a dim nebula. The sky was cloudless, the moon was hidden and the lights of the cities were far away, but the aurora borealis, airglow and glitter were in the air. The weather cleared and improved until night. The frost intensified to 15 degrees. The picture shows 15 half-minute shots stacked. I aligned the frames according to the comet, which was moving quite fast.

Images: 2 pcs

Binocular comet ZTF

26.1.2023 at 22.58 - 23.22 - Kouvola (I)
Tero Sipinen, Ursa (Etelä-Suomi)

Well, I had to immortalize this "smart-ass comet" too. I took a picture in the lights of the city center first with a 24-millimeter, and after zooming in for a while, I found a patch of greenish haze. I couldn't distinguish the comet with my naked eyes, although I got a pretty good direction with the help of the picture and the treetops. Finally, I took 20 images with 120 mil for stacking. I didn't start practicing other programs, but with the familiar and safe Halostack, this job was also successful. The first image is an average stack of 19 images aimed at the comet, still cropped fr...

Images: 3 pcs

Binocular comet ZTF

26.1.2023 at 22.34 - 03.12 - Jyväskylä (IV)
Harri Kiiskinen, Jyväskylän Sirius

Weather forecasts have been studied quite carefully in order to find a bright moment to photograph the binocular comet. Finally, the night between January 26-27, 2023 was almost cloudless and the telescope followed the comet while I myself watched the object with binoculars. I couldn't see the comet with the naked eye.

Images: 2 pcs

Binocular comet C/2022 E3

26.1.2023 at 22.30 - 23.10 - Ulvila (III)
Vesa Puistovaara, Porin Karhunvartijat

A few photo compilations of Comet ZTF. I collected 32 individual pictures (with a one-minute exposure time), with which I tried to compile this observation. 1. The fast movement of the comet in relation to the starry sky is clearly visible in the timelapse video. -- individual images are processed with the same settings. Consequently, the darkening of the background sky due to the influence of the Moon is also noticeable. The 2nd picture shows the combined movement of the comet and the stars (with DeepSkyStacker software) The 3rd picture is a picture stacked by DeepSkyStacker, centered in rela...

Images: 3 pcs

Binocular comet ZTF

26.1.2023 at 22.30 - 05.50 - Pieksämäki (IV)
Timo Kantola, Ursa (Itä-Suomi)

Nice comet! From the beginning of the evening I watched with 7x50 binoculars. The comet was easy to find and was visible as a clear oblong haze, although Pieksämäki's LED lighting annoyingly disturbs my observation spot in the northern sky. Next, I applied for a more robust Celestron 76mm f300mm Cometron, which is just the right game for this kind of comet bongaing. With that, the shape of the comet began to take shape, I couldn't make out the tail any worse. At the beginning of the evening at 22:30 I took a few pictures with the modded Canon 1000D + 135mmF2. Either due to light pollut...

Images: 6 pcs • Comments: 1 pcs

Binocular comet

26.1.2023 at 21.45 - 22.00 - Mäntyharju (I)
Markku Siljama, Ursa (Etelä-Suomi)

The crescent moon in the southwestern sky illuminated the thin haze in the sky, so it was not visible with the naked eye. With 10x50 binoculars, the comet was visible as a colorless haze ball. The comet's distance is 51 million kilometers. 1. comet in the middle sky 2nd explanation, Big and Little Bear 3 and 4.limited The weather is a few degrees below freezing, weak wind, somewhat like spring..

Images: 4 pcs

Binocular comet ZTF

26.1.2023 at 21.32 - Kurikka (I)
Marko Myllyniemi, Lakeuden Ursa

I looked the other day that comet C/2022 E3 (ZTF) could be easily found in the vicinity of Little Bear's bucket, so I had to try it out with camera optics. Since I was using a telephoto zoom lens, I locked the focal length with masking tape (to prevent the tube from spilling) at 135mm. The focus seems to be a bit on the soft side... I snapped 22 20-second exposures of the subject, which I stacked with the Sequator. The first image without Sequator light pollution filtering and the second with it. Third image stacked with Deep Sky Stacker. Post-processing of all images in Photoshop. Maybe a...

Images: 3 pcs

Binocular comet ZTF

26.1.2023 at 20.45 - Laihia
Kimmo Höykinpuro, Ursa (Länsi-Suomi)

I didn't try to spot it with binoculars, for example, but I found it pretty soon with a digital camera. The first picture is taken without tracking with exposure times of 4 seconds over a period of 2 minutes and stack Siril. Another one without tracking, exposure times of 2-4 seconds over a period of about 10 minutes. This time I let the Siril program try to track the comet. Both crops from the original and in all images ISO was 12500, aperture F/5.6 and 300mm.

Images: 2 pcs

Binocular comet ZTF

26.1.2023 at 20.00 - 21.00 - Harjavalta
Eila Syrjälä, Porin Karhunvartijat

Binocular comet.

Images: 2 pcs

Comet with naked eye coma

26.1.2023 at 19.49 - Vehmaa (I)
Pirjo Koski, Riku Poskiparta, Porin Karhunvartijat

The husband navigated the sky like it was the last day, the target was found and the undersigned tried to record the ZTF, i.e. the green utopulla, i.e. the comet. My husband and I ran away from light pollution and Laitila's "laser swords" in Uhlu, Vehma. The comet could be seen faintly with the naked eye in Vehmaa and also later in Laitila, with the background light eating away its "brightness." It was surprisingly nice even with putty lenses :)

Telescopic comet ZTF

26.1.2023 at 19.27 - 20.21 - Paimio (II)
Mika Aarnio, Turun Ursa

Observation is easy these days. The stand followed the comet and the camera shot 10 times for 5 min, I sat in the warmth and looked at the picture;).

Comet with naked eye coma ZTF

26.1.2023 at 19.24 - 19.34 - Rautalampi (II)
Vesa Vauhkonen, Sisä-Savon Ursa

A ten minute vision. 550 mm is an unnecessarily long focal length if you want to see even the tail. Here's a hint of a tail, maybe also a "forward" looking beginning of a diffuse discharge. To be tried next with a 135 mm camera lens (if available).

Images: 3 pcs • Comments: 1 pcs

Binocular comet ZTF

26.1.2023 at 19.20 - 22.50 - Outokumpu (III)
Antti Taskinen, Joensuun Seulaset

I also went to observe comet ZTF. With 15x50 binoculars it was easy to find and appeared as a featureless nebula of the same type as the Andromeda galaxy. With my naked eyes, I couldn't distinguish it from the light-polluted and moonlit sky. In addition, when there were clouds drifting in the sky and the transparency was otherwise poor, the conditions for photographing the comet were far from ideal. However, the comet's tails were recorded in the pictures somehow. Attached are the first two images compiled from shots at 22:37-22:50 (total exposure time 12 min) and the third from shots ...

Images: 4 pcs

Binocular comet ZTF

26.1.2023 at 19.00 - Vaasa (II)
Timo Alanko, Vaasan Andromeda

It looks nice in the pictures at the moment. In the cropped photos, movement for about half an hour. I don't think it's really a target for binoculars or telescopes. I tried both and even with the 1200 ml Skyliner 200 I didn't catch fire. It's really dim. Mostly, therefore, a nice shooting location.

Images: 3 pcs

Binocular comet ZTF

26.1.2023 at 18.40 - 19.25 - Lapua (I)
Antti Rinne, Nuutti Rinne, Ursa (Länsi-Suomi)

I haven't even seen Hyakutake's comet live. This was the boy's first comet. The moon is already disturbing a lot, even though it's still quite a small sickle. The camera in particular needs a lot of stray light. There is some moisture in the air. There was no hope with the naked eye, but with small binoculars you could already find a small waste there. The 14 mm Samyang isn't the most optimal lens for this, but since it's the only glass in the house that even has a scale on the focus ring, we decided to try it out. But the comet was spotted, that was the main thing.

Binocular comet ZTF

26.1.2023 at 18.25 - 19.25 - Raahe (I)
Jarkko Alatalo, Ursa (Pohjois-Suomi)

I had to try and found it with the help of the camera.

Binocular comet ZTF

26.1.2023 at 18.20 - 18.50 - Nokia (III)
Aki Karjalainen, Ursa (Länsi-Suomi)

The comet had brightened considerably compared to 20.1. to my observation (see https://www.taivaanvahti.fi/observations/show/111488 ). Now it was visible with a 50mm finder, so it is very likely a binocular comet also seen from the glow of the city lights. The shape of the comet reminded me of a fan, the nucleus of which could be seen near the fairly well-defined eastern corner. The western edge merged diffusely vaguely into the background sky. The core could be seen at times also by looking directly and with a distant eye easily. The fast movement of the comet was also noteworthy. I marked th...

Binocular comet ZTF

26.1.2023 at 17.53 - 18.46 - Kuusamo, Käylä (II)
Jani Päiväniemi, Ursa (Pohjois-Suomi)

The sky cleared and I was able to photograph the comet, which was hardly distinguishable with the naked eye. A timelapse of an hour showing the movement.

Comet with naked eye coma ZTF

26.1.2023 at 01.30 - 03.50 - Kuusamo (III)
Voitto Pitkanen, Ursa (Pohjois-Suomi)

Higher and higher praise the comet. Movement is already visible in longer exposures, not to mention several hours. The comet stood out to the naked eye, especially when there was a nearby star to look at first. During the night there was variable cloudiness, starting from completely cloudy to clear weather in the morning.

Images: 2 pcs

Comet with naked eye coma ZTF

25.1.2023 at 01.00 - 02.30 - Fregenal de la Sierra, Espanja (IV)
Tapio Lahtinen, Tampereen Ursa

I got nervous about the cloudiness in Finland and then I got nervous about the cloudiness in Italy (I tried to describe the SkyGems tube there). In the end, I ended up buying shooting time in Spain with a larger camera. You couldn't choose a shooting time there, but luckily the second possible night was clear and my order fit into the shooting schedule. Here, as a quick processing, only a 30x40 second exposure. My machine crashed when I tried to process all 90 images. Well, let's try again...

Comments: 1 pcs

Binocular comet ZTF

24.1.2023 at 17.30 - Kuusamo (III)
Voitto Pitkanen, Ursa (Pohjois-Suomi)

As the evening darkened before clouding over, there was a bit of shooting time due to the signs of clearer weather, and the comet's position also became more precise with the stars lighting up in the middle sky. Even so that with the 600 mm lens I was able to locate it directly as a light spot.

Images: 2 pcs

Binocular comet ZTF

23.1.2023 at 01.00 - 03.00 - Siikalatva (I)
Jarmo Kalaoja, Ursa (Pohjois-Suomi)

Kun pitkästä aikaa oli kirkas taivas niin pakkasessa ei komeetan kuvaamisessa mikään oikein taas toiminut, mutta jotain lopulta sentään kuvaan tarttui. Kamera piti laukaista käsin pientä nappia sormet jäässä etsien kun wifi ei suostunut toimimaan, siksi tärähtänyt. Tarkennus vaikeaa kameran näytön avulla, käsi ei yllä tarkentimeen kun yrittää sitä katsoa. Kello väärässä, mutta kuvassa n. 2.16. Hieno wifi etäohjeus iPädistä ei sekään pelittänyt, Celestronin GPS mokkula ei saanut yhteyttä, joten perinteisellä tyylillä haku. Komeetta näkyi kyllä hyvin 5cm etsimessä.  Galaksi kuvassa NGC 5907 (mag...

Comments: 3 pcs

Binocular comet ZTF

22.1.2023 at 23.00 - Kuusamo (I)
Voitto Pitkanen, Ursa (Pohjois-Suomi)

A 10-minute gap was found in the middle of the northern lights and upper clouds, which I used to search for and photograph the comet. After a long time, a small opportunity for this hobby as well.

Comments: 4 pcs

Binocular comet ZTF

22.1.2023 at 21.00 - Vaasa (II)
Timo Alanko, Vaasan Andromeda

We had to come through the clouds today as well. I couldn't get the tails out at the wedding. In the upper right, there is apparently a galaxy that looks like a line. Stellarium didn't give it a name.

Images: 2 pcs • Comments: 3 pcs

Binocular comet ZTF

22.1.2023 at 20.00 - 21.00 - Lapua

The comet was visible in C/2022 E3 (ZTF) in the constellation Dragon with small binoculars and a camera. Photo taken with Nikon D5000 + Nikkor 40 mm 2.8 G lens. Stacked, total exposure time approx. 12 min @ ISO 1600.

Images: 2 pcs

Binocular comet ZTF

21.1.2023 at 18.00 - Strömsö, Vaasa (II)
Timo Alanko, Vaasan Andromeda

After weeks of cloudy weather, they promised clear skies, yay! It was, but then a thick fog started to bother me, when there was nothing else I could do. I was a bit surprised myself when I managed to get through it with the second attempt to hit the 200 mm comet. I described the series for stacking, but I can hardly stack them. How nicely that would have really stood out against the black sky. Now I had to stop, when I didn't even want to separate Otavaaka in the sky anymore. In one image, the comet was greeted by a spinning satellite. I'll put it as the main image. As a bonus, a flas...

Images: 4 pcs

Binocular comet ZTF

21.1.2023 at 02.15 - Varkaus (III)
Ville Puoskari, Warkauden Kassiopeia

A quick shot of this rather bright comet from among the clouds. The weather was clear for only about 20 minutes.

Binocular comet ZTF

21.1.2023 at 02.05 - 06.00 - Orimattila, Artjärvi, Viestikallio (III)
Jorma Ryske, Etelä-Suomen kosmol. seura

Comet C/2022 E3 (ZTF) is quite close to Earth at 0.48au / 72 million km, and the comet is beginning to fill the cell of the longer focal length imaging equipment. Attached is a plate-corrected image where the size of the image field is 36'x28', corresponding to an image field of 750,000 km X 590,000 km at the comet's distance, the grid spacing in the direction of RA and Dec is approximately 210,000 km. Picture 1) Clear filter, 4x1min=4 minute exposure. A broad particle tail and two ion tails going in slightly different PA directions stand out. The ion tail in the direction of PA 30...

Images: 2 pcs

Binocular comet ZTF

21.1.2023 at 01.40 - 02.03 - Kangasala (III)
Tapio Lahtinen, Tampereen Ursa

I waited past midnight before setting off. I was in two stages whether to go in the direction of Ylöjärvi or Kangasala. The forecasts said that Ylöjärvi's direction would be better. But when the direction of Ylöjärvi was stranger and when I looked outside and the weather cameras, I ended up heading in the direction of Kangasala. The choice turned out to be good. It was dark (Bortle class 4) and the place was open. The equipment also played almost perfectly, and fittingly, when I was about to finish the series after two, the cloudiness started to increase. When I returned to Tampere it was ...

Images: 3 pcs

Binocular comet ZTF

21.1.2023 at 00.15 - 00.51 - Nousiainen (II)
Mikko Peussa, Ursa (Länsi-Suomi)

I was again looking for a comet in dark conditions. I still couldn't distinguish it with my eyes, even though I got used to the twilight for a long time. These items are not really my field, but a rare treat nonetheless, so you have to try something with basic equipment. Figure 1. Stack of 9 images cropped from 00:49 to 00:51. Figure 2. Stack 9 images less cropped. Figure 3. Single frame at 00:15.

Images: 3 pcs

Telescopic comet ZTF

21.1.2023 at 00.10 - 00.50 - Kaarina, Ravattula (II)
Matti Tainio, Ursa (Etelä-Suomi)

My second observation of Comet C/2022(ZTF). Now the clouds allow us to wait past midnight and the target to rise to a higher altitude. It's still very modest. A ten-centimeter lens tube showed the head, but no tail of any kind. With a 200mm lens and a tracking tripod, I managed to capture something already. In the picture, 26 25s exposures are stacked.

Binocular comet ZTF

20.1.2023 at 23.45 - 00.20 - Lieto (II)
Matti Helin, Ursa (Länsi-Suomi)

It was difficult to find, since there weren't really any bright stars in the area to navigate with. Finally found it. Seen quite well with 7x50 binoculars, clearly dimmer than for example M31, but quite close to M42... Maybe M31 and M33 in between. Greenish gray waste.

Binocular comet ZTF

20.1.2023 at 23.35 - 00.45 - Parainen (III)
Juha Ojanperä, Porin Karhunvartijat

My second observation of comet C/2022 E3 (ZTF), this time finally under dark skies and without hurry. The first thing you notice about the comet is a round, hazy coma with a clear central brightness in the middle. The coma brightens rather sharply towards the center. The comet seems to be leaving a very dim and faint tail in the northwest direction. The tail is so flimsy that it is hard to tell how far the tail continues, but I estimate the length of the tail to be approx. 16'. I also made a brightness observation of the comet with 10x50 binoculars. The observation method is the imprecise-...

Binocular comet ZTF

20.1.2023 at 22.30 - 23.50 - Laukaa (III)
Aleksi Ruotsila, Jyväskylän Sirius

I was able to forget the longer exposures when I realized how fast the tail of the comet was moving relative to the comet. In the videos (especially the version without stars) you can see the movement of the tail during about an hour. The picture has a total of 10 min of exposure (20x30sec).

Images: 3 pcs • Comments: 3 pcs

Binocular comet ZTF

20.1.2023 at 21.50 - Ulvila (III)
Vesa Puistovaara, Porin Karhunvartijat

Friday night looked quite clear on the west coast, and I tried to get a little better picture of the passing comet - and especially its tails.

Binocular comet ZTF

20.1.2023 at 21.49 - 21.52 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

I took scientific observations of the comet with eVscope for 3 x 20 min and finally a couple of pictures for my own use Right now, E3 is still getting brighter, but not as fast as we expected based on the latest light curve update. Something similar can be observed in other sources. The speculation behind this almost perihelion dimming is that many volatile substances have sublimated on their way to the Sun and are now running out. This dimming has been seen in long periodic comets before. Long-period comets originate in the Oort cloud, where they store highly volatile ice. These volatiles sub...

Images: 3 pcs

Telescopic comet ZTF

20.1.2023 at 20.00 - 20.15 - Nokia (II)
Aki Karjalainen, Ursa (Länsi-Suomi)

It was a clear evening, so of course we had to try to spot ZTF. My observation balcony is very light-polluted and there was a little haze in the air, so the limit magnitude with the naked eye was only about 4. On the other hand, it was only five degrees below zero and it was calm, i.e. practically summer weather. The seeing was also quite good in the evening, which I also noted after glancing at Jupiter after the comet. The comet was located quite far from the stars visible to the naked eye and the guiding star formations were quite vague, so star hopping towards the comet was therefore except...

Comments: 1 pcs

Binocular comet ZTF

20.1.2023 at 19.09 - 20.14 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

Comet C/2022 E3 update January 20-26 Our light curve shows a steady increase in brightness, dimmer than some sources like COBS, but brighter than, say, JPL Horizons. Measuring the full flux of a large comet in a detector is challenging.

Images: 2 pcs

Binocular comet ZTF

20.1.2023 at 19.00 - 20.00 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

The weather report promised maybe half an hour or at most one hour of clear skies in the evening, so the pipe line to cool down. I started around 19:00 and finally the evening stretched into the morning. There were bigger changes to the plans because I wasn't prepared for the observations of the whole night. Fortunately, the weather report can sometimes also be positive. The main target was the clear comet C/2022 E3, both scientific observations and pictures for your own pleasure. I also noticed a couple of transits of asteroids during the night. More about them after the analyzes are comp...

Images: 2 pcs

Binocular comet ZTF

19.1.2023 at 21.59 - 22.14 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

Vespera was outside ready to cool down, just in case we got lucky and the clouds parted for a while. I went outside to visit and saw Jupiter bright, otherwise there were still clouds. I aimed Vespera at the only gap where the stars were visible and followed the movement of the clouds until the sky opened wide for the comet. I took three five-minute sessions until the sky was overcast again. It felt good to see the starry sky after a long time.

Images: 3 pcs • Comments: 2 pcs

Telescopic comet ZTF

18.1.2023 at 18.10 - Nakkila (III)
Juha Ojanperä, Porin Karhunvartijat

My first observation of Comet C/2022 E3 (ZTF). Kiirus meant to come with an observation, I looked that there might be a small clear moment just at the beginning of the astronomical twilight. In a hurry, I packed my things and headed towards Nakkila. After arriving at the observation site, it was a hurry to set up the equipment for the observation and look for the comet. In addition to the approaching clouds, the difficulty factor was increased by the dusky sky, the scattering of light pollution on the horizon in the direction of the comet and the fact that the comet was low. I almost managed t...

Comments: 3 pcs

Binocular comet ZTF

17.1.2023 at 01.15 - Ulvila (II)
Vesa Puistovaara, Porin Karhunvartijat

Photographed in the middle of variable cloudiness, this (by the way, such a bright and certainly spectacular object) and a fairly easy-to-find object - C/2022 E3 (ZTF) Visually, with the help of a telescope (Celestron C11), it looks really spectacular, the direction and structure of the comet's tail was possible to see more closely... When viewed with binoculars (Skymax 25x100), the target was mostly a hazy and gray spot in the middle of the field of view, but a spectacular-looking target nonetheless. The wider field of view made the search for the comet significantly easier. Due to the fl...

Images: 2 pcs • Comments: 2 pcs

Binocular comet ZTF

16.1.2023 at 21.49 - Rusko (I)
Mikko Peussa, Ursa (Länsi-Suomi)

While waiting for the Northern Lights, I spent my time looking for a comet and that's where I found it. I took a few pictures with 300 milliliters. Dim satellites were drawn in several images, even though the image area is small. The witches were not distinguishable by eye at all, and neither was the comet. I made a small 6-picture gif as the second picture.

Images: 3 pcs • Comments: 2 pcs

Binocular comet ZTF

16.1.2023 at 20.00 - 22.00 - Lieto (II)
Matti Helin, Ursa (Länsi-Suomi)

The weather forecast predicted that it would clear up, so there was a rush to try to catch comet C/2022 E3 (ZTF). The first attempt went to the magpies when the sky filled with clouds. Later in the evening it became clear and I found the comet low above the forest. Unfortunately, there was a lot of light pollution in the backyard, but something ended up on the cell. Image composed of nine eight-second exposures.

Comments: 5 pcs

Binocular comet ZTF

16.1.2023 at 06.25 - 06.57 - Fregenal de la Sierra, Espanja (III)
Tapio Lahtinen, Tampereen Ursa

The forecast for the morning in Espa looked partly cloudy at most, but luckily there was a bit of a break in the clouds. Well, it wasn't completely clear, which obviously dimmed the tail a bit. The brightness has increased a little since the previous observation . Let's hope that it will clear up and the weather will be more favorable (also here in Finland).

Images: 2 pcs

Binocular comet ZTF

5.1.2023 at 06.06 - 07.35 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

I left the tube outside to cool already in the evening and the alarm at 5 o'clock. Quite an icy misty sky. I finish tuning Vespera and start photographing comet C/2022 E3. The comet is already clearly moving. In the second picture, you can see the core stretching movement in 43 minutes. The first picture (which I took last, the core still remains spherical at 18 minutes.

Images: 2 pcs

Binocular comet ZTF

5.1.2023 at 04.25 - 04.45 - Mänttä-Vilppula (III)
Jukka Laakso

Moonlight and freezing fog was a really bad combination when shooting this with 135 mm optics. If only the weather would be better at the end of the month.

Binocular comet ZTF

4.1.2023 at 07.24 - 07.50 - Fregenal de la Sierra, Espanja (I)
Tapio Lahtinen, Tampereen Ursa

In the morning, I photographed the comet's luminance with a telescope. The tail can be seen a little better. I borrowed the colors from the previous night's picture.

Images: 3 pcs

Binocular comet ZTF

3.1.2023 at 07.25 - 08.03 - Fregenal de la Sierra, Espanja (I)
Tapio Lahtinen, Tampereen Ursa

The third comet of the remote telescope shooting night. The comet begins to approach the brightness where it can be seen with the naked eye (in some estimates it has already reached such brightness). The tail has also grown so that even in such a large field, you have to think about the placement of the comet so that the entire tail fits into the picture. It's a shame that due to the limited balcony view, you have to go to the countryside to shoot this.

Images: 2 pcs

Telescopic comet ZTF

2.1.2023 at 21.30 - 22.12 - Fregenal de la Sierra, Espanja (I)
Tapio Lahtinen, Tampereen Ursa

This comet has also increased in brightness and tail length since its observation a month ago .

Comet with naked eye coma ZTF

2.1.2023 at 06.35 - 06.45 - Kangasala, Sahalahti (II)
Jorma Mäntylä

Comet C / 2022 E3 ( ZTF ) was best seen in the morning high in the sky. The head stood out faintly as an extra star in the Northern Crown constellation. With a camera and 50 mm optics, the green color and a bit of a tail came out even without a tracking tripod.

Images: 2 pcs • Comments: 3 pcs

Binocular comet ZTF

2.1.2023 at 06.12 - 06.42 - Valtimo (IV)
Veli-Pekka Häkkinen

The second target of the morning is comet C/2022 E3 (ZTF). Will be described again at the end of the month.

Binocular comet ZTF

2.1.2023 at 06.04 - 06.40 - Varkaus (III)
Veli-Pekka Hentunen, Warkauden Kassiopeia

I photographed comet C/2022 E3 (ZTF) early on Monday morning 2 January 2023 at 06 - 06:40 with the Härkämäki observatory's C-14 telescope and SBIG ST-8XME CCD camera. The weather was clear, minus -5 C. Two tails are clearly visible on the comet, of which the longer and narrower gas tail continues outside the picture and is probably almost half a degree long. The dust tail is quite wide, fan-shaped.

Images: 2 pcs • Comments: 3 pcs

Binocular comet ZTF

2.1.2023 at 05.30 - 07.00 - Orimattila, Artjärvi, Viestikallio
Jorma Ryske, Etelä-Suomen kosmol. seura

Comet C/2022 E3 (ZTF) imaged with LRGB filters (Figure 1) with 4x10x1min exposures (2023-01-02_03:30UT) and in the second (Figure 2) mv mosaic image through the Clear filter with 10x1min exposures. The exposures are stacked according to the stars, registered when the comet is still moving that slowly, so in that sense this is a "correct" image. When you try to bring out the colors in the hair and tails, it goes a bit towards caramel saturation. The stringy ion tail stands out to the edge of the image by a degree, green comma 12'. A wide fan-like dust tail is in the direction of 0deg. Figur...

Images: 3 pcs • Comments: 2 pcs

Telescopic comet ZTF

1.1.2023 at 18.20 - 18.30 - Kaarina, Ravattula (II)
Matti Tainio, Ursa (Etelä-Suomi)

The first observation of the year is Comet C/2022 E3 (ZTF). Even though the sky was suburban clear and the comet was low in the northern direction, with the camera and 200mm lens it was already visible in the first picture and in the second it was in the middle. I tried visual observation with binoculars, but was unsuccessful. I hope it gets brighter so we can see this for real.

Images: 2 pcs

Binocular comet ZTF

1.1.2023 at 05.38 - 06.25 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

Comet C/2022 E3 (ZTF) is getting brighter every day. Here's a picture on New Year's morning.

Binocular comet ZTF

1.1.2023 at 03.50 - 04.30 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

The comet was on 12 January 2023 at At 18:50 UTC this comet will be closest to the sun and closest to the earth on February 1, 2023 Here is our E3 light curve up to the fifth day of January and the prediction of the peak brightness of magnitude 6 on February 1st. The comet's brightness approximates the minimum brightness of objects visible to the naked eye in suburban areas.

Images: 2 pcs

Binocular comet

28.12.2022 at 17.40 - Vaasa (II)
Timo Alanko, Vaasan Andromeda

First testing with the midwinter comet. Hit the picture right away on the first try. It's dim, but it can be photographed with camera optics alone. The last two pictures are 200 mm originals. In the last size comparison object, Hercules' M13.

Images: 4 pcs • Comments: 2 pcs

Telescopic comet ZTF

26.12.2022 at 19.06 - 19.09 - Imatra (II)
Rauno Päivinen, Etelä-Karjalan nova

Comet C/2020 V2 (ZTF) wandering near the North Star as seen from our own light-polluted backyard. The tube was Meade's 10-inch SCT, visually the comet was just separated from the background. In a dark place, this would probably stand out more clearly. I attached an old mirrorless Canon EOS-M camera to the tube and with that the comet became more clearly visible. The picture shows 10 pieces of 15s exposures, the tripod was I-Optron's AZ Pro alt/az goto tripod, without guidance. No flats, the images were in JPG format, so the possibility of adjusting the final image was very limited. The...

Telescopic comet ZTF

25.12.2022 at 18.30 - Kuusamo (III)
Voitto Pitkanen

The comet had brightened since the last observation.

Images: 2 pcs

Binocular comet ZTF

25.12.2022 at 03.01 - 04.00 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

Comet C/2022 E3 (ZTF) was visible better compared to the previous night, now the sky in the direction of the comet was not hazy and I noticed that I also removed the double narrowband filter

Binocular comet ZTF

25.12.2022 at 02.55 - 03.40 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

The comet was on 12 January 2023 at At 18:50 UTC this comet will be closest to the sun and closest to the earth on February 1, 2023 Here is our E3 light curve up to the fifth day of January and the prediction of the peak brightness of magnitude 6 on February 1st. The comet's brightness approximates the minimum brightness of objects visible to the naked eye in suburban areas.

Images: 2 pcs

Binocular comet ZTF

24.12.2022 at 07.20 - 08.05 - Fregenal de la Sierra, Espanja (I)
Tapio Lahtinen, Tampereen Ursa

I also photographed the brightening comet today, with a slightly different tactic. Maybe I got my tail out a little more than the night before. In the second picture I combined pseudo-luminescence. Edit: added version without stars showing the branching of the tail.

Images: 3 pcs

Binocular comet ZTF

24.12.2022 at 03.02 - 03.29 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

Comet C/2022 E3 (ZTF) is starting to show nicely. Let's hope that this will become a spectacular comet in the next month. When filming, there was a slight haze on the horizon in the direction of the comet.

Binocular comet ZTF

24.12.2022 at 02.30 - 03.15 - Janakkala, Tervakoski (III)
Petri Kuossari, Riihimäen tähtit. yhdistys

The comet was on 12 January 2023 at At 18:50 UTC this comet will be closest to the sun and closest to the earth on February 1, 2023 Here is our E3 light curve up to the fifth day of January and the prediction of the peak brightness of magnitude 6 on February 1st. The comet's brightness approximates the minimum brightness of objects visible to the naked eye in suburban areas.

Images: 2 pcs • Comments: 4 pcs

Search result contains observations from time period 22.3.2022 klo 06.00 - 29.1.2023 klo 23.59.