Search the Community
Showing results for tags 'm86'.
Found 5 results
Took this photo of the Markarian's Chain during my visit to Namibia in April 2017. Photo Details: 8 x 10Min Lum channel. 15 Min for each RGB channel Telescope: ASA 12'' F3.6 Mount: ASA DDM85 Camera: FLI8300 Mono with Astrodon filters Thanks for watching, Haim Huli
A set of data I took back in March and April this year of the Virgo Cluster, centred around M84, M86 and The Eyes (NGC 4435/8). Taken through FLT110 with FR using an ST-2000XM, riding on the Losmandy Titan. L:R:G:B = 240 (24x10min) : 75 : 70 : 70 (RGB binned 2x, 5min subs) I struggled with processing this lot - I'm putting most of the issue down to the flats which didn't seem to apply very nicely, and I landed up with some very odd gradients in all 4 channels, which I struggled to remove with tools like DBE and SNCR in Pixinsight. I think I might have been able to pull out more faint stuff without those issues going on. The colour is very subdued here so I think extra colour data wouldn't make a huge difference - but if I was going to do anything else it would be to start over with fresh subs and better flats - I'm going to put this off until any future equipment changes like larger FoV! Comments/criticisms more than welcome - thanks for taking a look!
The Markarian Chain, with M86 and local friends. Taken while drowning west. Intended as a 4000 ISO test, had to suffer much wind and throw away most of subs. Gear: Olympus E-PL6 with Skywatcher 130PDS and SWCC at f/4.55 on Celestron Nexstar SLT tracking Alt-Az Exposure: 44 lights (/ 35% keep) x 30s x 4000iso, 38 darks Processing: Regim 3.4, Fotoxx 12.01+ Location: deep country 26km from Limoges, France; good sky (skm ~21.4)
© Fabien COUTANT
Having missed out on a couple of clear nights with other commitments this month, I was glad to get out last night for only the second time this April. At 10:20pm, it still wasn't quite astronomically dark but the sky was already looking very clear. I had planned to skip across Mankarian's chain and search for NGC 4216, NGC 4365, NGC 4486, NGC 4261, NGC 4568, NGC 4654, NGC 4371 in Virgo and NGC 4725 in Coma Berenices but never got that far for getting side tracked with five new galaxies to me on the galaxy hopping route. I started (as I usually do) from Epsilon Virginis toward HD112278 and then moved on to NGC 4754 and NGC 4762, which both showed up quite readily in the 8mm X-Cel eyepiece. I then headed West by Northwest through the bright trio of M60, M59 and M58 before dropping South to see NGC 4564 and the Siamese Twins. I cannot be certain I saw both but NGC 4568 was just about possible. I was unclear how close the core of the slightly feinter NGC 4567 was to the other galaxy and was also repeatedly throw by two nearby stars of magnitudes 11.3 and 12.3. A quick naked eye check on the sky identified a number of stars in Melotte 111. I popped the 15mm eyepiece back in to navigate up to M87 (perhaps the brightest of the night). I switched back to the 8mm once found for a closer look and noticed a feinter galaxy NGC 4478 to the West. At magnitude 11.4, it is close to my limit but after five or ten minutes of viewing, I was seeing it like a football (to coin a cricketing phrase). NGC 4476 was sadly beyond me. Westward again took me to NGC 4440, a much harder target but still just about visible using all the tricks at my disposal. At magnitude 11.7, it is the feintest fuzzy I have seen to date. The two feinter companions NGC 4431 and NGC 4436 were not possible to view. From there, I headed North toward Mankarian's chain. First up were the Eyes (NGC 4435 and NGC 4438) which were instantly detectable. M86 and M84 were bright but I spent some time trying to tease out some of the feinter companions. NGC 4388 made an equiliateral triangle with the two Messiers but NGC 4387 and NGC 4402 were not possible. I then moved back up the chain towards Coma Berenices and managed to find NGC 4461 just before the border and finished with spotting NGC 4473 and NGC 4477: my only Coma galaxies of the night. 18 galaxies in an hour and a half and five new ones included in that made a great return to the night sky. ____________________________________________________________ Observing Session: Monday 30th April 2013, 22:20 hrs to 23:50 hrs BST VLM at Zenith: 5.3 - 5.4 New - Revisited - Failed