Recently Browsing 0 members
No registered users viewing this page.
This a rework of data I captured last november.
Previously the intent was to reveal the faint dust lanes within this galaxy. Now I aimed for the very faint tidal stream that connects this galaxy to its neighbour M31.
The stream is the result of gravitational interactions between M110 and M31.
(click on the image for a larger version)
To show the tidal structure and weak halo surrounding M110, here's an inverted and superstretched version.
2.2 hours of integration time is really not enough to do this target justice, so I will add to it later this year.
L: 14 x 3 minutes, gain 0, -30 C RGB 6 x 5 minutes (each), gain 0, -30 C total integration time: 2.2 hours Processed in PixInsight
(Gear as per my signature.)
You could call this my first proper attempt at andromeda, thought I've imaged it quite a few times now. But this is the first time I've managed to get most of it in one picture, which required me to do a two-pane mosaic.
The left side of the mosaic is stitched 27 subs of 2 minutes ISO 3200, while the right side is 28 subs, + 1 sub of 8 minutes ISO 800 (just to test what difference exposure contra ISO does to details).
I am very pleased with the result of it, but I also discovered some of the pains of doing mosaics, as getting an even background was very hard. Gradient X-terminator would do a decent job, but couldn't quite nail it, so I used it in conjunction with a few other techniques. The stitching was easy and painless, as I just used Microsoft ICE.
Some feedback on the processing would be lovely, as I am not sure if this is my final version. I've starred myself blind processing it..
56 subs (ISO 3200 and 800)
2 minute exposure (+one 8 minute)
1.96 hours Total Exposure
Celestron Advanced VX Mount
Explore Scientific HR Coma Corrector
Stacked with DSS, stitched with Microsoft ICE, processed in Photoshop CS2
M31 - Andromeda Galaxy on 2017-09-22
Gear: Olympus E-PL6 with OM-Zuiko 200mm/4 at F/5.4 and TS-Dydimium filter on Celestron NexStar SLT
Capture: 60 lights (/80% keep) x 40s x 3200 ISO, 13 darks
Sky: moonless, average (didn't get any SQM, was prb 18-19), 50km from Paris, France
Processing: Regim 3.4, Fotoxx 12.01+
Edit: for full size see here: https://stargazerslounge.com/topic/228101-the-no-eq-dso-challenge/?page=116#comment-3294377