Dates:Oct. 18, 2020
Frames:
85x300" bin 1x1
145x300" bin 2x2
Integration: 19.2 hours
Darks: ~21
Avg. Moon age: 1.96 days
Avg. Moon phase: 4.28%
Bortle Dark-Sky Scale: 4.00
Astrometry.net job: 3989082
RA center: 21h 16' 15"
DEC center: +68° 16' 40"
Pixel scale: 0.539 arcsec/pixel
Orientation: 214.894 degrees
Field radius: 0.182 degrees
Resolution: 1944x1465
Locations: Observatoire du Calvados, Calvados, CALVADOS, France
Data source: Backyard
This ghost gave me a lot of work. The signal was very diffcult to extract from the background as the flats were not good. My friend Philippe Lamothe sent me the data to see what surgery was possible. I made a synthetic flat with CS and tried to adjust it the best way. I also used localised masks and Density Tools to get the signal out of the background and correct some donuts.
The image is taken with an Moravian G2-4000 ( 85 x 300s) and the ASI 294 Pro (185 x 300s).
As a result, there are still some regions with noise and a few signal issues in the low lights, but I like it anyway. We saved these 20 hours data :)
JF
Description: Slight noise correction and fat stars spikes corrected.
| ZWO ASI 294MC PRO |
| Astrophotographes (France) |
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