NGC7635 Bubble Nebula in Cassiopeia

click on image to enlarge

Taken on March 27, 2003 from my backyard in Castro Valley, Ca

AP155EDF 1085mm FL, f/7 imaging scope

SBIG ST10XE @-22C imaging camera

Astro-Physics 80mm Guidescope 900mm FL

SBIG ST7E @-15C guide camera

AP1200GTO mount

Optec TCF-S robotic focuser

FLI CFW1 Filter Wheel

Schuler 9nm Hydrogen Alpha filter

6 exposures of 20 minutes each

2 hours total exposure time

Maxim DL 3.0.7 used for image capture

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