The Bubble Nebula, NGC7635 Imaged with an AP 305mm f/12.5 Maksutov Cassegrain
Instrument - Astro-Physics 305mm F12.5 Mak-Cassegrain Camera - SBIG STL11K (image cropped to show detail).
Filters - Baader H-a, OIII, SII, Hubble Palette, Exposure - approximately 5 hours total exposures.
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