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Bubble Nebula in Emission-Line
Type Planetary Nebula
Constellation Cassiopeia
Distance 11,000 ly
More Info
Date 28 Jun 2014 (Summer)
Place Palomar Mountain, CA
Exposure Data SII:Ha:OIII 75:150:75 mins @ -20C
SII 5x15 (bin 2x2), Ha 10x15 (bin 1x1), OIII 5x15 (bin 2x2) as RGB
Notes Cropped 50%
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 SII, Ha, OIII
Software Maxim DL, CCDStack, Photoshop