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Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
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.

NGC3310 / SN AT2021gmj

25.3.2021 at 20.54 - 22.24 - Hyvinkää (III)
Timo Inkinen, Ursa (Etelä-Suomi)

On March 25, 2021, I photographed the AT2021gmj supernova from the small NGC3310 galaxy in the constellation Big Bear. Wikipedia provides basic information about that 3′.1 × 2′.4 dimmed “starburst” galaxy, but it is better to link this observation to the observation of the Virtual Telescope website: https://www.virtualtelescope.eu/2021/03/20/supernova -candidate-at-2021gmj-in-ngc-3310-Galaxy-an-image-20-mar-2021 / I turned the full-resolution image into a vertical position so that it was in the same direction as that model image. The second image is a grid-sized image in which I have left a 10...

Images: 2 pcs

Starry sky image

26.9.2020 at 22.26 - 23.59 - Hyvinkää (II)
Timo Inkinen, Ursa (Etelä-Suomi)

Krüger 60 is a narrow, dwarf star formed by red dwarf stars near our own Sun. Its distance is 13.1 light-years from our own solar system (cf. the nearest star of us, the Alpha Centaur 4.37 light-years), but visually the brightness of this dwarf two-star is only +9.8 / +11.4 magnitude. Krüger 60 can be found in the constellation of Cepheus, just less than a degree away from Delta (δ) Cephe, the model of the Cepheid variables. Because this binary star is such a dim and cramped pair, it was impossible to describe it in one and the same image. So I first shot an LRGB image of that star range (15: ...

Images: 2 pcs

Milky way

19.9.2020 at 22.10 - 22.50 - Pieksämäki (IV)
Timo Inkinen, Ursa (Etelä-Suomi)

This time I was at a "dark place camp" in my own summer cottage in Pieksämäki . Friday 18.9. in the late evening, a narrow furrow wiped the sky blank and after that a perfectly clear night sky emerged with brilliant transparency. The boundary magnitude was somewhere around 6.5, as I admired the glow of the Milky Way down to almost the horizon at the time. The star cloud on the shield clearly separated from the Milky Way, and the large rupture of the Milky Way in the Swan was clearly visible. The double set of Perseus (NGC 869, 884) and the galaxy of Andromeda were clearly visible to the naked ...

Comments: 1 pcs

Mars

13.9.2020 at 23.43 - Hyvinkää (III)
Timo Inkinen, Ursa (Etelä-Suomi)

Margaritifer Sinus and Aurorae Sinus merge this time in my image of Mars into a dark central region. The small eclipses that stand out from there are Juventae Fons in the direction of 3 o'clock and on the opposite edge in the direction of 9 o'clock Sinus Meridiani. At the bottom of the Mars reef stands still Niliacus Lacus and from here to the right a hint of the Nilokeras / Achillis Fons region. The "bridge" connecting these in the picture probably shows Oxia Palus and Indus merged, but they are now one "pixel mass". Mars should be photographed at a longer focal length to further impr...

Starry sky image

13.9.2020 at 22.40 - 23.15 - Hyvinkää (III)
Timo Inkinen, Ursa (Etelä-Suomi)

I photographed the star Eta Cassiopeiae, a well-known binary star in Cassiopeia. This image is a traditional LRGB image with 30s of exposures 10 pcs / color channel (20min in total). The apparent brightnesses of this pair are 3.44 and 7.51 magnitudes and the distance from each other in the sky is 13 ", so this is distinguished by a pair of already quite moderate telescopes and magnifications. More information about this double star can be found even on these pages: https://astronomynow.com/2019/12/13/go-hunting-for-colourful-winter-double-and-multiple-stars-in-cassiopeia/ https://nineplanets.o...

Mars

10.9.2020 at 23.57 - Hyvinkää (III)
Timo Inkinen, Ursa (Etelä-Suomi)

Mars on September 10, 2020 photographed as a shift from the early night, when new surface shapes stood out from the surface for me. I inadvertently took a picture without gear extensions and no IR-Pass filter. So here is the "organic image" of the TMB 152/1200 LZOS APO lens tube without the usual steroids associated with Mars imaging :-D Either the seeing happened to be momentarily better in the early evening or the short shooting focal length of 1200 mm produced a rather sharp looking mark. I also tried to shoot Mars about an hour later via a 2.5x PowerMate (3000mm focal length), but at that ...

Mars

8.9.2020 at 01.54 - Hyvinkää (IV)
Timo Inkinen, Ursa (Etelä-Suomi)

Mars photographed this fall in the best seeing that has hit me so far. I used 4x PowerMate for this image (tube focal length 4800mm) and shot 68 fps video with a low ROI setting with an ASI183MM Pro camera through a Baader IR-Pass filter. This time the blocks snaped into place and I got the best Mars picture this fall for myself :-) This time the picture left Mare Sirenum, Olympus Mons, Phoenecis Lacus, Solis Lacus and the plain of Memnonia. Seeing was somewhere between satisfactory and good, as I neither visually saw Mars very well, but the fast 69fps / 14ms video got enough (3%) sharp frames...

Starry sky image

8.9.2020 at 00.12 - 00.45 - Hyvinkää (III)
Timo Inkinen, Ursa (Etelä-Suomi)

I practiced shooting double stars again and the target was Iota Cassiopeiae for gear. The problem with these is always how to present the image, as well as the often very close partners of the two stars and, on the other hand, the immediate surroundings of that star. I’ve explored that dilemma from different angles and this time here’s a color LRGB version of my multiple star on my home page. As an example of previous filming attempts e.g. Delta Cygni and Castor Kuvani. Exercises continue ... Iota Cassiopeiae is characterized by stars of magnitude 4.65 / 6.9 / 8.7, spaced AB between 2.7 "and A...

Mars

2.9.2020 at 02.08 - Hyvinkää (III)
Timo Inkinen, Ursa (Etelä-Suomi)

A month from my previous Mars image and very much this has grown in size. So I took a picture of Mars with a TMB 152/1200 lens tube and a 2.5x PowerMate extension + my ASI 183MM Pro camera on the morning of September 1, 2020. That introduced a 3000mm focal length, but paid no special attention to Mars imaging technology. I told this to the forum in more detail and from there I also copied the second observation visual observation report here: “I also looked at Mars visually with the TS 102 / F11 ED tube and it’s just a good game to withstand magnifications! I used the same 2.5x PowerMate exten...

Images: 2 pcs

Sun

23.8.2020 at 10.47 - Hyvinkää (III)
Timo Inkinen, Ursa (Etelä-Suomi)

The sun was pretty expressionless today, but I both captured the view through the Daystar Quark Ha filter from the edge I thought was best. This image now shows the same area at the bottom right (around five o’clock) that is featured on the SpaceWeather Sun page and the GONG Ha page. I usually check the Ha view from that GONG service and those irregularities come from the AR2772 comma a couple of days earlier than the counterpart much much lower than that sunspot. A kind of "sigh from scratch" observation, but let's go like this when I haven't been to Ha-Sun for a long time.

Starscape image

8.8.2020 at 00.00 - 00.30 - Pieksämäki (III)
Timo Inkinen, Ursa (Etelä-Suomi)

Here are a couple of landscape constellations from early August, when it’s not yet properly astronomical dark. I went to Pieksämäki summer cottage on August 6-8, 202020 and photographed the night sky with Olympus 7-14 / 2.8 wide angle zoom just before midnight. The first image shows a 14mm wide angle view of the cinema size south over the cottage pond. At the bottom of the horizon are the summer planets Jupiter and Saturn (reflected from the surface of the pond). Slightly higher up shine the three bright stars of the Summer Triangle, namely Deneb, Vega and Altair. At the top of the image, ther...

Images: 2 pcs

Starry sky image

4.8.2020 at 01.00 - Hyvinkää (III)
Timo Inkinen, Ursa (Etelä-Suomi)

Delta Cygni is a cramped twin star in Swan in the middle of the Milky Way. Its components have magnitudes of 2.87 and 6.37 and their angular distance in the sky is close to Finland's winter seeing limit, ie two angular seconds (2 "). A larger image of this item will appear on my website and those percentages in the corners of the image are the scaling of the image from the original 100% image. I have acquired a second lens telescope for my incoming season, especially for visual observations (TS 102 / F11 ED). The current TMB 152/1200 (LZOS) APO lens tube now remains largely in shooting mod...

Images: 2 pcs

Sun

1.8.2020 at 10.14 - 11.05 - Hyvinkää (III)
Timo Inkinen, Ursa (Etelä-Suomi)

From the beginning of August, a couple more "evil basics" to the Sun's Ha views. These have both been filmed from the morning of 1.8.2020. Weak & widespread protuberance of the color image at 10:14 and the beginnings of the "wannabe sunspot" of black photography (or what lie other chromosphere disturbances) at 11:05. I had to rip that protu image quite thoroughly "open" in image processing, so that protu image isn't as pretty as it could be with an easier protu on screen. The protuberance of this image was only properly visible when the Sun was exposed for longer (approx. 150-200ms), w...

Images: 2 pcs

Mars

1.8.2020 at 02.37 - Hyvinkää (III)
Timo Inkinen, Ursa (Etelä-Suomi)

Mars described as a gear using a 2.5x teleconverter. The shooting tube is TMB 152/1200 LZOS APO and the camera ZWO ASI 183MM Pro. SER in video 2x2 binding 1280x1024 pixels and 20ms (50 fps, 200 frames out of 5000 in the final image). In AS3, the image is magnified using 1.5x drizzle. From Mars visible as a switch to the Syrtis Major (what lie ???) region, which was for myself the first time :-D

Images: 2 pcs • Comments: 6 pcs

Sun

31.7.2020 at 14.40 - 14.45 - Hyvinkää (V)
Timo Inkinen, Ursa (Etelä-Suomi)

This observation made me feel like I was in the right place at the right time for once :-) Here comes the afternoon view of the sun on July 31st in the Ha light for about five minutes. I photographed the active protuberance eruption, which was also noticed on the SpaceWeather website, when it was in full swing. These three images show clear movements in the plasma discharge during a short five minute observation period! As I browsed those images in succession on my computer, I noticed that they actually show a plasma falling down to the surface of the sun (not a plasma discharge rising from th...

Images: 4 pcs • Comments: 2 pcs

Mars

30.7.2020 at 02.00 - Hyvinkää (III)
Timo Inkinen, Ursa (Etelä-Suomi)

Here would be my first attempt this season to capture Mars with my TMB 152/1200 lens tube. I monitored it for the morning with tripod adjustments (I ran the PEM Pro repair run for follow-up) and while I was still refreshed around two o’clock, I decided to try shooting Mars with my ASI 183MM Pro black and white camera. Here, the end result would be to extract 450 frames from a video frame delimited by 5006 in the center of the image area to the final image. The colors in the picture I made in PhotoShop. I also looked at Mars visually after shooting using 335x and 432x magnifications and noticed...

Binocular comet NEOWISE

27.7.2020 at 01.13 - 01.20 - Hyvinkää (III)
Timo Inkinen, Ursa (Etelä-Suomi)

Comet C / 2020 F3 (NEOWISE) photographed from the morning of 27.7.2020. This had to be sought for a moment in the sky, when it had already sunk surprisingly down under Otava. I finally went to the neighbor’s yard with my camera to see down enough to the horizon. I used a Vixen 8x50 binoculars to search, with which the comet stood out quite clearly after the sky had darkened enough after 1 p.m. This image shows a combination of a single image (Olympus 45mm F1.2 and 3.2s / ISO 400) and 70 of those single images stacked in PixInsight. Only a distant hint of the comet's tail became visible in ...

Sun

26.7.2020 at 10.21 - Hyvinkää (IV)
Timo Inkinen, Ursa (Etelä-Suomi)

Sunspot AR2767 photographed in narrowband Ha light. The picture actually became more interesting when I left it popularly in black and white. The AR2767, visible in visible light, appears in black as it should, with the tiny little guy sunspots visible in white to the right. I separated those two little spots only very carefully by detecting the TMB 152/1200 with a lens tube and a Baader Herschel prism (150x magnification). At times, they disappeared into the ripple of seeing, but both appeared with enough diligence to be sure of their existence. The white disc visible in Ha light visible belo...

Images: 2 pcs • Comments: 2 pcs

Sun

28.6.2020 at 09.36 - Hyvinkää (IV)
Timo Inkinen, Ursa (Etelä-Suomi)

A reasonably impressive protuberance photographed from the Sun on June 28, 2020 at 9:36. The imaging tube is the familiar TMB 152/1200 APO lens tube combined with Daystar Quark Chromosphere Combo + Baader D-ERF filters and a Televue 4x PowerMate teleconverter. The occurrence of protuberances varies from day to day, so usually there is always something to describe in that Ha area. The picture can also be found on my website . I added to the observation a raw image of the outbreak of a group of sunspots seen at the same time, which then neither became a more permanent group of spots on the surfa...

Images: 2 pcs

Sun

27.6.2020 at 08.57 - Hyvinkää (IV)
Timo Inkinen, Ursa (Etelä-Suomi)

In turn, a slightly more modest protuberance in Ha light from the edge of the Sun. This is described with a TMB 152/1200 lens tube and Daystar Quark Combo + Baader D-ERF filters (@ 4800mm FL). The camera was an ASI 183MM Pro and the video was stacked with AutoStakkert 3 and the final image processed in Photoshop. From this web image, one can guess what a smaller protuberance peeking from the edge is now in question. (In practice, with the telescope I use, there are always protuberances of some size in the Sun to watch / describe.)

Search result contains observations from time period 1.1.2000 klo 00.00 - 16.9.2021 klo 21.02.