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The Bubble Nebula (NGC 7635) |
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Object Information Imaging Details |
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The 'bubble' in this image is an rapidly expanding region of gas that is being cast off of an immense star (around 40x our Sun's mass). The massive star is clearly visible toward the upper left of the 'bubble'. The nebula appears in the constellation, Cassiopeia, and is around 7100 ly away. It is roughly 10 light years across and expanding at a rate of around four million miles per hour. The Bubble Nebula (NGC 7635) is faintly visible through modest-sized telescopes. This image is a combination of color images (taken under hazy skies at ASLC's 'Upham' DSO site) and Ha images collected from my front yard in Las Cruces. Clicking on the image brings up a larger, more detailed image. |
Telescope: |
Celestron NexStar GPS 11" |
Camera: |
Canon 300D (type 1 modified) | |
Filter(s): |
Color - IDAS LPS, HA - Baader 7nm | |
Misc. Optics: |
Giant Easy Guider (f/5) | |
Exposures: |
Color - 12 x 4 minutes; Ha - 31 x 4 minutes. All images @ ISO 800 | |
Guiding: |
Guiding was done through a piggybacked ED80 (f/30) with GuideDog using a ToUCam. | |
Processing: |
Raws converted to Tiffs with Photoshop CS3. Images aligned and stacked using Nebulosity. Curves/levels adjustments also performed with Photoshop CS3. Noise reduced with Noise Ninja. | |