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Skywarden,
Ursa Astronomical Association
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00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

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

Telescopic comet Honda-Mrkos-Pajdusakova

31.3.2017 at 21.34 - 21.53 - Orimattila, Artjärvi, Tähtikallio (III)
Kari Laihia, Christos Oscar Kambiselis, Ville Puoskari, Janne Voutilainen, Veikko Mäkelä, Porin Karhunvartijat

45P was also a target at the Equipment Days. Ville assembled the comet stack and Kari according to the stars. Even a small counter-tail is noticeable. #pyrstö: 14 'PA 290 ° #pyrstö: 2.5 'PA 115 °

Images: 2 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

29.3.2017 at 23.00 - Pieksämäki (I)
Timo Kantola, Ursa (Itä-Suomi)

I photographed a dimmable 45P / Honda-Mrkos-Pajdusakova again. The brightness of the core is probably less than 18 mag As I twisted the images, I noticed one "star" was slightly skewed compared to the other stars. This is probably some 18.5mag asteroid that at least I couldn't find with Cartes Mystery asteroid location March 29, 2017 At 20:00 UT was Kuta like Mean J2000 RA: 10h30m58.06s DE: + 19 ° 48'52.38 " First picture stacked according to the stars. The second image is the same as the first one, added with info, The third is negative, stacked according to the comet. The fourth is s...

Images: 6 pcs • Comments: 6 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

28.3.2017 at 22.50 - Tampere (II)
Tapio Lahtinen, Tampereen Ursa

As I practiced galaxy photography, I realized that the 45P comet is right next door, and even though I had read about its dimming, I decided to try it with a few short exposures. And it even appeared with a delicate tail ball. I marked a few galaxies with their brightness. The latest findings are something of a mag 12 class but I would bet it would be dimmer as well. The satellite that flashed at the comet could not be identified. #pyrstö: 12+ 'PA 285 ° #pyrstö: 1.5 'PA 105 °

Telescopic comet Honda-Mrkos-Pajdusakova

23.3.2017 at 23.43 - Pieksämäki (I)
Timo Kantola, Ursa (Itä-Suomi)

I photographed another 45P / Honda-Mrkos-Pajdusakova. It's dim. I measured the core brightness with FotoDiff to be about 18.2 mag. The tail, with the opposite tail in the visible 18 ', could be seen a little longer, but some remain outside the picture. First image 2x600 sec exposure combined, one of the images has been followed by a comet and the other the stars - not perhaps the best combination, but the clouds and the wake-up call the next morning messed up a great plan. Another image of one 600sec exposure following a comet. In the third added a bit of information. #pyrstö: 15+ '...

Images: 3 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

19.3.2017 at 21.49 - Helsinki, Maunula (I)
Jorma Ryske, Etelä-Suomen kosmol. seura

Comet 45P / Honda-Mrkos-Pajdusakova is moving slowly on the back of the Lion, being 80 million kilometers from Earth. A weak 8 'tail is distinguished to the upper right oblique and a counter-tail fan to the left lower oblique 2.5'. The spiral galaxy on the right side of the image is NGC 3287 mag 12.30. The image is stacked according to the comet and the comet has not moved much during the half hour exposure. In the animation, the comet stays almost in place and at the end is visible when the clouds came on. Edit, added as the 1st image an image stacked according to the right core of th...

Images: 3 pcs • Comments: 5 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

20.3.2017 at 00.53 - Pieksämäki (I)
Timo Kantola, Ursa (Itä-Suomi)

In the dim moments of the night, a 300sec exposure was quickly captured. The comet poses with the 12.2mag galaxy NGC 3287. At the bottom of the image shines a 7.8 mag star HD91656 EDIT: I added a picture where two galaxies are marked A and B, the picture is related to the weaving of Jorma Ryske's observation: http://www.taivaanvahti.fi/observations/show/62054 #pyrstö: 18+ 'PA 280 ° #pyrstö: 2 'PA 110 °

Images: 2 pcs • Comments: 1 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

19.3.2017 at 21.30 - Kuusamo
Voitto Pitkanen

Yes, the third comet of the evening had dimmed. That is exactly what was recognized in the pictures. #pyrstö: 10 'PA 285 °

Telescopic comet Honda-Mrkos-Pajdusakova

18.3.2017 at 22.24 - Pieksämäki (I)
Timo Kantola, Ursa (Itä-Suomi)

There was a gap between the clouds for a moment. Just when I got the filming going, I was hit by technical problems, and I lost contact with the observatory (30m away). The comet was comfortably in the same field of view as the galaxy NGC 3301. I got a 5 x 1min stack of pictures, a couple of different stretches and a faulty negative, #pyrstö: 12+ 'PA 285 ° #pyrstö: 3 'PA 105 °

Images: 3 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

4.3.2017 at 22.55 - Helsinki, Maunula (II)
Jorma Ryske, Etelä-Suomen kosmol. seura

Comet 45P / Honda-Mrkos-Pajdusakova has dimmed rapidly, now moving above the Lion. In addition to the weak right-up tail, the counter-tail is also weakly distinguished. The galaxy just to the right of the image is PGC 33041 mag15.20. The first image is stacked according to the comet, the second according to the stars, and the third is an animation of the comet’s motion over 45 minutes. #pyrstö: 19+ 'PA 285 ° #pyrstö: 2 'PA 110 °

Images: 3 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

25.2.2017 at 22.02 - 22.20 - Orimattila, Artjärvi, Tähtikallio (III)
Veikko Mäkelä, Jorma Ryske, Ursa (Helsinki)

As another object, we described the comet 45P / HMP. We tried both one- and two-minute exposures. Here are the stacks of the former. The comet with a big tube is still quite spectacular. A throttle tail and a small counter-tail are visible. The dust tail is possibly diffuse next to the gas tail. The tail extends slightly beyond the field of view. Several galaxies can be seen near the comet. Above the comet is a 13.3 magnitude NGC 3713. PGC 93629 (17.3 mag) above the tail, PGC 35588 (15.2 mag), PGC 1828205 (18.1 mag) in the tail direction. From the comma at the top right next to the star PGC 35...

Images: 3 pcs • Comments: 2 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

26.2.2017 at 00.30 - Kirkkonummi (III)
Jari Saukkonen, Kirkkonummen komeetta

After Orion sank behind the horizon, I turned the telescope towards the rising Lion, where Comet 45P was staying. I managed to capture an eight-minute frame with each LRGB filter until a cloud ferry approaching from the west ended the evening. I stacked the images quite nimbly according to the moving comet, and connected it to the starry sky from the same images. In the second image, a short animation of the luminance squares, the interval between the squares is just over five minutes. #pyrstö: 19+ 'PA 290 ° #pyrstö: 9 'PA 90 °

Images: 2 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

27.2.2017 at 20.56 - Kuusamo (II)
Voitto Pitkanen

I still had to try to describe this comet when, surprisingly, there was a clear sky. Time was easy to find, fading all the time, but something was still visible in the camera optics images stacked for half an hour. NGC3629 may also appear near the core. #pyrstö: 55 'PA 280 °

Images: 3 pcs • Comments: 5 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

25.2.2017 at 23.59 - Rautalampi (I)
Vesa Vauhkonen, Sisä-Savon Ursa

An almost breathtaking view of his comet. Not visible with binoculars. The first image is excavated from a single 30 s exposure in the second image. #pyrstö: 15 'PA 290 °

Images: 2 pcs

Binocular comet Honda-Mrkos-Pajdusakova

26.2.2017 at 02.26 - 03.09 - Tampere (III)
Tapio Lahtinen, Tampereen Ursa

I can see mine after a short night’s sleep but just as if a double tail were pointing to the right. The background was ugly when the three could no longer take flattened pictures. #pyrstö: 30 'PA 285 ° #pyrstö: 3 'PA 100 °

Binocular comet Honda-Mrkos-Pajdusakova

25.2.2017 at 23.38 - 23.45 - Kangasala, Sahalahti (III)
Jorma Mäntylä

Honda & al. stood out so as with camera optics, but requires long exposure in light-free conditions. Not an easy destination. #pyrstö: 24 'PA 285 °

Images: 2 pcs • Comments: 1 pcs

Binocular comet Honda-Mrkos-Pajdusakova

25.2.2017 at 21.31 - Kuusamo
Voitto Pitkanen

Surprisingly well, that comet is still visible. Image cropped from a 300mm shot. #pyrstö: 36 'PA 290 ° #pyrstö: 5 'PA 120 °

Comments: 2 pcs

Binocular comet Honda-Mrkos-Pajdusakova

21.2.2017 at 21.35 - Järvenpää (II)
Toni Veikkolainen, Keski-Uudenmaan Altair

It was difficult for a comet to emerge, but a fire came from a quick stack of images taken without follow-up.

Telescopic comet Honda-Mrkos-Pajdusakova

21.2.2017 at 23.00 - Hankasalmi, Murtoinen (II)
Harri Kiiskinen, Jyväskylän Sirius

The crash of the remote imaging equipment brought a little challenge to yesterday’s session, but thanks again to Arto, it was finally done. The glow of the tail might seem to be enough until outside the field of view (25 '). Next time you need to take longer exposures. #pyrstö: 12+ 'PA 290 °

Images: 3 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

21.2.2017 at 23.07 - Helsinki, Maunula (II)
Jorma Ryske, Etelä-Suomen kosmol. seura

Comet 45P / Honda-Mrkos-Pajdusakova is still moving at a brisk pace by a quarter of a moon's diameter per hour as it moves away from Earth, being 24 million kilometers away. The comma appears in the light-polluted image about 15 'and the tail 25'. The comet was also monitored with PHD monitoring program parameters during individual 90s exposures. #pyrstö: 25 'PA 285 °

Telescopic comet Honda-Mrkos-Pajdusakova

22.2.2017 at 02.00 - 04.52 - Tampere (II)
Tapio Lahtinen, Tampereen Ursa

Until the morning, I tried to see how well the tripod can follow the comet with longer exposures, even though the comet is moving at a rather nimble pace. Well, this tuning worked pretty well when even some tails were visible. First image 10 x 5 min following the comet, another image stacked 9 x 1 min according to the comet, third image 9 x 1 min stacked according to the stars Edit: fourth image with different debayer setting. #pyrstö: 17 'PA 300 °

Images: 4 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

22.2.2017 at 01.17 - Hämeenlinna (I)
Veijo Timonen

I stacked those exposures according to the stars. So I got the stars better, but the comet’s tail suffers. Without the UHC filter, I wouldn’t have gotten anything out of it when there’s extra light in the shooting area. #pyrstö 55 'PA 290 °

Telescopic comet Honda-Mrkos-Pajdusakova

21.2.2017 at 22.45 - Paimio (II)
Jani Laasanen, Turun Ursa

Among other descriptions, I also half-carelessly included this comet, 45P / Honda-Mrkos-Pajdusakova. The quick 8 x 30 seconds now doesn’t show wonders, but will now be added here as a continuation of the observations. The subject really doesn’t dazzle with its surface brightness. #pyrstö 40 'PA 290 °

Images: 2 pcs

Binocular comet Honda-Mrkos-Pajdusakova

22.2.2017 at 00.12 - Pieksämäki (II)
Timo Kantola, Ursa (Itä-Suomi)

One 20min exposure. It's pretty dim EDIT: Corrected shutter speed 25 -> 20min. #pyrstö: 40 'PA 290 ° #pyrstö: 6 'PA 110 °

Comments: 2 pcs

Binocular comet Honda-Mrkos-Pajdusakova

21.2.2017 at 21.27 - Kangasala (III)
Jorma Mäntylä

Comet 45P / Honda-Mrkos-Pajdusakova is now going above Berenike's hair. Stands out in camera images as a greenish spot. Even a little tail can be imagined to be visible. It would require a very light-free observation point. The snow that rained tonight reflected an orange blast into the sky. #pyrstö: 50 'PA 290 °

Images: 2 pcs • Comments: 1 pcs

Binocular comet Honda-Mrkos-Pajdusakova

18.2.2017 at 03.11 - 03.17 - Orimattila, Artjärvi, Tähtikallio (III)
Kari Laihia, Christos Oscar Kambiselis, Hannu Määttänen, Porin Karhunvartijat

Described during the work of the Star Rock. The last object during which the telescope mirrors misted, the strong noise in the picture is due to it. #pyrstö: 14+ 'PA 290 °

Images: 2 pcs

Binocular comet Honda-Mrkos-Pajdusakova

15.2.2017 at 03.23 - 04.30 - Pieksämäki (II)
Timo Kantola, Ursa (Itä-Suomi)

I photographed a comet on Wednesday morning at 3: 23-04: 30, with 3min exposures of these images, I compiled an animation. The animation is a bit flickering, due to the moonlight and thin upper clouds - so no comet flickering. In the animation, the Sun illuminates the comet from about 7 a.m. Another image of the images is a combined hourly exposure of a comet. Did not bring right any additional details, utupallo which utupallo.

Images: 2 pcs

Binocular comet Honda-Mrkos-Pajdusakova

18.2.2017 at 03.15 - Pieksämäki (II)
Timo Kantola, Ursa (Itä-Suomi)

I experimented with a color camera as the Moon is slowly receding, so I can use slightly longer exposures. Here's one 20min exposure. The most difficult thing is to adjust the tripod to follow the comet, the tripod requires the speed of the comet relative to the starry sky in seconds of arc / min. No matter how I calculate and measure from the map program, the values I get do not work, I get the Dec value easily and accurately, but the Ra value only works by collapsing. Now I calculated the tracking values for this shooting to Ra11.09 "/ min and Dec -1.175" / min. Didn't work, the core...

Images: 2 pcs • Comments: 5 pcs

Binocular comet Honda-Mrkos-Pajdusakova

17.2.2017 at 22.55 - 23.18 - Kangasala (III)
Jorma Mäntylä

The air brightened so I went to Roine on the ice to photograph the comet. That's where it's in the direction of the Hounds. The owl owl rumored in the beach forest as I photographed the comet. Even the comet's tail can be slightly separated in the northeast direction. #pyrstö: 10 'PA 300 °

Images: 5 pcs

Binocular comet Honda-Mrkos-Pajdusakova

17.2.2017 at 21.30 - Jyväskylä (II)
Harri Kiiskinen, Jyväskylän Sirius

45P with camera optics from the backyard in the middle of light pollution. #pyrstö: 11 'PA 290 °

Binocular comet Honda-Mrkos-Pajdusakova

15.2.2017 at 04.23 - 04.32 - Kangasala, Sahalahti (III)
Jorma Mäntylä

I was already dismantling the tripod when I remembered the comet 45P Honda-Mrkos-Pajdusakova. That's pretty close to Johnson in the Bear Guard, The Honda-Mrkos-Pajdusakova is clearly a brighter and easier target than Johnson. The green spot immediately stood out from the images despite the moonlight. The fast motion of the comet in ten minutes stands out well in a series of three images. When the moonlight relaxes, this can become a handsome target for camera optics.

Images: 4 pcs

Binocular comet Honda-Mrkos-Pajdusakova

14.2.2017 at 21.20 - Hankasalmi, Murtoinen (II)
Harri Kiiskinen, Jyväskylän Sirius

This 45P / Honda – Mrkos – Pajdušáková is a real momentum. Unfortunately, it was very low at the time of shooting, and this time the observation time was not enough to record color channels.

Images: 5 pcs • Comments: 5 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

14.2.2017 at 06.16 - Pieksämäki (II)
Timo Kantola, Ursa (Itä-Suomi)

Morning surprisingly clear. A couple of pictures .. I tried to get a tripod with a gloomy comet. Just when I got to play, I had to go to work. It's going hard. RA correction -29.5 "/ min and Dec correction 4.864" / min - so then the comet somehow got the point to stay at 60sec exposures. The core of the comet is now, I think, denser and brighter. The distance is 0.0910au, or about 13.6 million kilometers. However, I do not think it is in any way a dazzling target. In the first picture, approximately natural with 1min exposure. The brightest star is 6.9mag HD131451. The sun is about 8 o'...

Images: 4 pcs • Comments: 1 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

14.2.2017 at 20.15 - Kuusamo (II)
Voitto Pitkanen

The busy comet was easy to find and the same pace seemed to rush it from one constellation to another. It seemed to brighten somewhat. The gif animation is for a 2 hour time period (8:15 pm to 10:15 pm); about 5 minutes from the beginning and about 20 minutes from the end. The fourth image shows the comet's motion for 11 minutes.

Images: 4 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

13.2.2017 at 05.20 - Kuusamo (II)
Voitto Pitkanen

Despite the moonlight and the cloud gauze, the comet still stood out from the gray background in some way. Location in the constellation of Pohjankruunu for a while longer. In the animation, motion is about 20 minutes long.

Images: 3 pcs • Comments: 2 pcs

Binocular comet Honda-Mrkos-Pajdusakova

9.2.2017 at 06.14 - Helsinki, Maunula (III)
Jorma Ryske, Etelä-Suomen kosmol. seura

The comet 45P / Honda-Mrkos-Pajdusakova is moving at a seemingly fast pace for about 2/3 of the moon's diameter per hour, being here only 13 million kilometers from the earth. The coma is broad, very diffuse with a diameter of about 20 'towards the center of the brightness, with a clear peak of brightness. The first is a gif video from 16 minutes, the second an image stacked by a comet and the third by a star. There was a rush with the exposures so that the comet did not run too far from the image field to the edge and the 30s was the maximum single exposure, otherwise the comet was al...

Images: 3 pcs • Comments: 4 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

7.2.2017 at 06.20 - Helsinki (I)
Juha Parvio, Ursa (Helsinki)

The dream did not come to my eye, so at five o'clock in the morning, with the sky cloudless, I figured out that I could now try to describe this comet. I only had the Stars and Space-published map of the comet's position in the sky. It wasn’t very accurate, so finding a comet in the sky was a time of shooting. With binoculars, the comet was not visible or visible on the camera screen. I still decided to take a series of pictures with a 15-second exposure in the supposed direction of the comet, sometimes changing direction slightly. When I then downloaded the images to the computer, the...

Images: 4 pcs

Binocular comet Honda-Mrkos-Pajdusakova

7.2.2017 at 06.30 - Järvenpää (II)
Toni Veikkolainen, Keski-Uudenmaan Altair

I had decided to wake up early despite the temperature of -20 degrees and decide to go and shoot the brightest of the three binocular comets on the spring season 2017 so far. At first I decided to try it with a short focal length without tracking. I put the camera to sing, glanced gently at the single screen, and wondered if I had now used the search map for the right day anyway, or if I might have been mistaken for a month. It was hard to see any signs of comets on the screen. Of course, there are enough stars in this celestial direction. I walked with my hands clumsy inside and wondered if t...

Comments: 1 pcs

Binocular comet Honda-Mrkos-Pajdusakova

7.2.2017 at 05.51 - Pieksämäki (II)
Timo Kantola, Ursa (Itä-Suomi)

A moment passed in the morning, recognizing that the telescope was hitting the right area. Then it took me a while to get the tripod to follow the comet at the right speed which seemed really fast - and diffuse. When I got it all down, I took a short series of unique pictures of the comet. The pictures were unique in that I only saw them once when I had forgotten to tick off the "save" spot. Here are 60 sec (two first) and 120 sec exposures of the subject. Longer "unique" 240s exposures - they only had more and longer line stars.

Images: 3 pcs • Comments: 3 pcs

Binocular comet Honda-Mrkos-Pajdusakova

7.2.2017 at 07.00 - Tampere (III)
Tapio Lahtinen, Tampereen Ursa

One of the best comets this spring. Of interest in comet is that 11.2. overtakes the Earth from just 0.08 AU (about 12 million kilometers). The momentum of a comet is then about twenty arc minutes per hour in the sky. Around mid-February, the comet brightens and may even be visible to the naked eye. 2 versions of the comet: 12 x 1 minute exposures in the first and 10 x 2 min in the second. The movement of the comet is clearly visible.

Images: 2 pcs • Comments: 7 pcs

Telescopic comet Honda-Mrkos-Pajdusakova

4.1.2017 at 17.10 - Jyväskylä (I)
Harri Kiiskinen, Jyväskylän Sirius

I watched from Stellarium that 45P is on a low dimming horizon. So again to the nearby beach, where the smoke from the local power plant meant to penetrate the front. As the pictures stretched out, the right spot was found in Utu, which I would think was 45P / Honda-Mrkos-Pajdusakov.

Images: 3 pcs

Search result contains observations from time period 1.1.2016 klo 00.00 - 07.12.2022 klo 15.07.