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Crescent Nebula in Emission-Line
NGC6888
Object
Type Supernova Remnant
Constellation Cygnus
Distance 5,000 ly
More Info
Image
Date 16 Oct 2021 (Fall)
Place Palomar Mountain, CA
Exposure Data Ha 150 mins @ -25C
Ha 10x15 (bin 1x1)
Notes
Equipment
Optics DSI RC10C Corrected RC Astrograph
Focal Length 1867mm @f/7.3
Mount Astro-Physics 900GTO
Camera FLI ML-6303E
Focuser Built-in Secondary Focuser
Filters FLI CFW2-7, Astrodon 3nm Ha
Software MaxIm DL, CCDStack, Photoshop