M52
Object: NGC7635 Camera: Meade DSI Pro II
Date: 9/30/2008 Telescope: Meade 80mm ED refractor
Total Exposure: Ha,SII,OIII - 60':60':60' Subexposures: 5 minutes each
Mount: Orion Sirius EQ-G Guiding: PHD - Orion StarShoot Auto Guider
Location: West Boylston, MA Guide Scope: Orion Short Tube 80
Processing:
  • Meade AutoStar Suite Image Processing:
    1. Dark/Flat frame calibration
    2. Each color channel Aligned and Combined
    3. Each of those sets aligned with each other
  • Photoshop:
    1. Each channel imported using Fits Liberator plug-in
    2. Curves and Levels adjusted to each channel
    3. Ha, SII and OIII channels RGB merged
    4. More curves and levels adjustments to taste
 Description:
NGC 7635 - AKA The Bubble Nebula

The Bubble Nebula is a glowing cloud of stars, gas, and dust located some 11,300 light years away toward the constellation Cassiopeia. (The Bubble Nebula is also designated as NGC 7635.) The nebula surrounds a hot star roughly 20 times more massive than the Sun, which is visible near the left-hand edge of the image. Ultraviolet light from the star causes the gas to glow through a process known as fluorescence, and winds of material blown out from the star give the nebula its characteristic shape. The nebula is some 10 light years across.