gorann Posted February 15, 2016 Share Posted February 15, 2016 When the nebulas in our own galaxy disappeared behind the trees last night, I went galaxy hunting. Here is an image that I think contains five galaxies. When I upload the image to Astrobin and Astrometry.net, four galaxies are identified: M99 (the spiral one), NGC 4262 (the smudge near the center top edge), NGC 4298 and NGC 4302 (the pair to the left). However, at 10 a clock from that pair, there is another smudge that cannot be a star and I expect it to be a galaxy (marked on the blow up). Does anyone know it? I can see that I have a vignetting issue to fix when I upload it here (not apparent in Photoshop for some reason) Explore Scientific ED127 with Canon 60Da (15 x 5 min ISO 1600) Link to comment Share on other sites More sharing options...
Martin Meredith Posted February 15, 2016 Share Posted February 15, 2016 Hi Goran UGC 7436 (mag 14.8). You've also picked up PGC 169128 (mag 17.5, 1.3 billion light years) which is at about 3.30 with respect to UGC 7436, not far from the end of your horizontal marker. Nice shot overall too! Martin [edit] Here's a map for ID. You've got far more than 5 galaxies in the shot. If you look closely there are likely to be some very very distant quasars too. COM4256.pdf Link to comment Share on other sites More sharing options...
gorann Posted February 15, 2016 Author Share Posted February 15, 2016 5 minutes ago, Martin Meredith said: Hi Goran UGC 7436 (mag 14.8). You've also picked up PGC 169128 (mag 17.5, 1.3 billion light years) which is at about 3.30 with respect to UGC 7436, not far from the end of your horizontal marker. Nice shot overall too! Martin Hi Martin, thanks for the info! Is UGC 7436 the same as PGC 40066? According to the link below that a friend just sent me after I put it on Facebook, it is PGC 40066. That link also shows that there are two other galaxies in the small blow up: PGC 169114 just to the left of NGC 4302, and PGC 165108 just next to PGC 40066. So with PGC 169128 that you picked up, there are 6 galaxies in the blow up. Amazing. http://bf-astro.com/ngc4302.htm Link to comment Share on other sites More sharing options...
Martin Meredith Posted February 15, 2016 Share Posted February 15, 2016 Yes, its the same one. I'd normally use the PGC as a last-resort ID system as that is a kind of catalogue of catalogues, so in precedence order: M, NGC, UGC, MCG, etc,… PGC You've also got PGC 4323318 (mag 19.3) about half way from UGC 7436 to the northern tip of NGC 4302. And of course in the main picture there's many more... Martin Link to comment Share on other sites More sharing options...
gorann Posted February 15, 2016 Author Share Posted February 15, 2016 OK, I see the logic ...and 7 galaxies then just in that small frame! Link to comment Share on other sites More sharing options...
gorann Posted February 15, 2016 Author Share Posted February 15, 2016 Thanks again Martin, so, here is a summary of the galaxy situation just in that small part of the image, taken by a small telescope on a small planet in a medium sized galaxy Link to comment Share on other sites More sharing options...
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