Imaging telescope or lens: Astro-Tech AT8IN
Imaging camera: Meade DSI II C
Mount: Skywatcher NEQ-6 Pro Synscan
Guiding telescope or lens: Orion ShortTube 80 f/5
Guiding camera: Meade DSI
Focal reducer: Antares 0.5x Reducer
Software: EQMOD Project EQASCOM, photoshop, Cartes du Ciel, Sequence Generator Pro, DeepSkyStacker, PHD2 Guiding, Nebulosity, Silicon Fields StarTools 1.3, Noel Carboni's Astro Tools for PhotoShop, AstroPlanner
Integration: 4.2 hours
Avg. Moon age: 22.39 days
Avg. Moon phase: 48.44%
Astrometry.net job: 1273720
RA center: 344.379 degrees
DEC center: 62.509 degrees
Pixel scale: 3.286 arcsec/pixel
Orientation: -179.890 degrees
Field radius: 0.438 degrees
Locations: Mapleton Lateral Observatory, Mapleton, Utah, United States
Tried to add some OSC RGB to go with Hα from 2014, but the session failed due to image download issues a little after I went to bed. Hence, I didn't get as much data as I should have. I'm trying to learn how to add the RGB stars back into the HαRRGB to preserve some of their color and brightness without overwhelming the image. Still learning how to do that, but this is a current attempt, and it is dramatically better than my first attempt on this target in 2012 so I’m happy to see the progress.
Date: 28 Oct 2016
Subject: Sh2-155, Cave Nebula
Scope: AT8IN + Antares 0.5x focal reducer
Filter: Baader Planetarium UHC-S
Mount: EQ-6 (EQMOD)+PEC
Guiding: Orion ST80+Antares 0.5x focal reducer +DSI Ic+PHD 220.127.116.11 (Win 10 ASCOM)
Camera: DSI IIc, no chiller CCD ~10 °C
Acquisition: Sequence Generator Pro 18.104.22.168 with Nebulosity 4.1.1 ASCOM camera driver (Win 10)
Exposure: 14x600 s (OSC) + 11x600 s (Hα)
Stacking: Neb 4, bad pixel map, bias included, 33 flats, match histograms, trans+rot align, Neb 40-60%tile stack.
Processing: StarTools 1.4.305: Crop; Wipe; Develop: 79.19%; HDR:Optimize; Color:Scientific, 122% saturation; Deconvolute: 2.4 pix; Life:moderate; Track: Smoothness 87%, 4.5 pix; Magic, shrink 1 pix. Heal out stars per online StarTools tutorial and save. Photoshop CS6 + Astronomy Tools: Deep space noise reduction; Use HαR for R and for Luminance; boost R channel; Layer on RGB stars using Color Dodge; Increase star color; Levels; Hue/Saturation adjustments a couple of times; Layer masked local contrast enhance; Liquify/pucker; Astroframe.
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