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SH2 119 – The Clamshell Nebula
I was happy to grab this image during a full moon swing this early October. Patches of clear sky let me grab some quick RGB images for star color, a total of a whopping 10 minutes on each filter. For nebulosity I was able to capture about 16.5hrs using hydrogen, sulfur, and oxygen filters which did rather good on the target considering a full moon.
Location
Location: Pendleton, Oregon
Observatory: ASG Dual Dome Observatory
Bortle: 4
Equipment
Telescope: Celestron RASA 11 (620mm focal @ f/2.2)
Filters: Astronomik MaxFR 50x50mm Square SHO & Deep Sky RGB
Main Camera: ZWO ASI 6200mm-pro Monochrome
Tilt & BackFocus Adjuster: ASG Electronically Assisted Tilt (EAT)
Mount: iOptron CEM 120EC
Guide Scope: William Optics 50mm Uniguide
Guide Camera: ZWO ASI 290mm-mini
Processing Software: Captured with NINA, Stacked with Astro Pixel Processor, Processed in PixInsight
Acquisition
Date: October 13-24, 2024
R: 26 x 30 seconds
G: 19 x 30 seconds
B: 22 x 30 seconds
Ha: 106 x 300 seconds
Sii: 54 x 300 seconds
Oiii: 36 x 300 seconds
Total Integration time ~16.9 hrs
Calibration Bias: 20
Calibration Dark: 20
Calibration Flats: 20 for each filter