Testing from my suburban skies at f/8 for image scale and exposure time for rate of comet movement. No flats so vignetting is prominent. DeepSkyStacker 3.3.4 Stacked 100% of 17 Images ISO 800 @ 150 Sec, 24 DARK @ 120 Sec, 32 BIAS, 0 FLATS, Post-processed with Adobe Photoshop CC 2014 Telescope - PowerNewt 200mm f/4 with Televue 2X 2" Powermate at f/8 FL=1600mm, No filter, Baader BCF modified Canon 70D DSLR field 23' x 34' , Ambient 13C. EQMOD EQASCOM with Ascom 6 for mount control. Backyard EOS Pro 3.0.3 for Image acquisition. Mount - Skywatcher NEQ6 Pro. Guidescope - Orion ShortTube 80 with Starlight Xpress SuperStar (Mono) CCD Auto Guider and Stark Labs PHD auto guiding software.
The third of 3 processing variants using the same stack - This one with stacking done on stars and comet independently then stacked in the final image to produce distinct stars and comet. Just not quite enough light gathered per image to give the tail contrast in my suburban skies. DeepSkyStacker 3.3.4 Stacked 80% of 17 Images in comet+stars mode ISO 800 @ 35 Sec, 88 DARK @ 120 Sec, 32 BIAS, 0 FLATS, Post-processed with Adobe Photoshop CC 2014 Telescope - PowerNewt 200mm f/4 with PowerNewt(ASA) f/2.84 Reducer/Coma Corrector, No LPS filter, Baader BCF modified Canon 70D DSLR field 90' x 134' , Ambient 20C. EQMOD EQASCOM with Ascom 6 for mount control. Backyard EOS Pro 3.0.3 for Image acquisition. Mount - Skywatcher NEQ6 Pro. Guidescope - Orion ShortTube 80 with Starlight Xpress SuperStar (Mono) CCD Auto Guider and Stark Labs PHD auto guiding software.
The second of 3 processing variants using the same stack - This one with stacking done on comet only, so the comet is better defined but the stars less distinct due to trailing. DeepSkyStacker 3.3.4 Stacked 80% of 17 Images in comet mode ISO 800 @ 35 Sec, 88 DARK @ 120 Sec, 32 BIAS, 0 FLATS, Post-processed with Adobe Photoshop CC 2014 Telescope - PowerNewt 200mm f/4 with PowerNewt(ASA) f/2.84 Reducer/Coma Corrector, No LPS filter, Baader BCF modified Canon 70D DSLR field 90' x 134' , Ambient 20C. EQMOD EQASCOM with Ascom 6 for mount control. Backyard EOS Pro 3.0.3 for Image acquisition. Mount - Skywatcher NEQ6 Pro. Guidescope - Orion ShortTube 80 with Starlight Xpress SuperStar (Mono) CCD Auto Guider and Stark Labs PHD auto guiding software.
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