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I agreeImaging telescopes or lenses:Lacerta Photonewton
Imaging cameras:ZWO ASI1600MM-Cool
Mounts:Skywatcher AZ-EQ6
Guiding telescopes or lenses:Skywatcher 9x50 finder
Guiding cameras:Lacerta MGEN
Software:Photoshop , Pleiades Astrophoto, S.L. Pix Insight , APT - Astro Photography Tool APT 3.13
Filters:Astronomik LRGB 31mm
Accessory:Skywatcher/Lacerta GPU comacorrector
Dates:May 18, 2017
Frames: 304x180" bin 0x0
Integration: 15.2 hours
Avg. Moon age: 21.65 days
Avg. Moon phase: 55.30%
Astrometry.net job: 1634939
RA center: 13h 29' 58"
DEC center: +47° 14' 16"
Pixel scale: 0.784 arcsec/pixel
Orientation: 179.397 degrees
Field radius: 0.306 degrees
Resolution: 1280x968
Locations: my lovely garden, near Vienna, Austria
Data source: Traveller
This is a LRGBHa of 149+62+36+28+29 subframes. The trick for the details was to sort out the best Luminance data by FWHM, and stack them separately to build the highlights from them. All of them were used for the background and extracting weak signal.
A crop on the galaxy and a full field is provided, both at 100% resolution.
A good deal of sharpening and contrasting was done using a new technique developed for Photoshop by Christoph Kaltseis, he showed it first at CEDIC 2017 conference in Austria. It free and non commercial, learn more about APF-R here:
http://www.cedic.at/apfr/
Description: crop on M51
Description: annotated version
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