NGC 7635, also called the Bubble Nebula and Sharpless 162, is a H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow.
Canon EOS Digital Rebel XS Hap Griffin modified with Astrodon UV/NIR Block filter
Astro Tech 6 RC with AT Field Flattener
University Optics 11x80 guidescope
Meade DSI guide camera
Celestron CGE mount
ISO 800 15 exposures @ 10 minutes each
Guided with PHD
Captured and Stacked in Nebulosity
Processed in Photoshop
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