Bubble Nebula Region
Emission / Reflection in Cassiopeia
Uploaded 1/22/26

Here is one of the richest areas in the entire fall/winter sky to image. Centered on NGC7635 the Bubble Nebula in Cassiopeia, the attending boxy shaped nebula is Sharpless 2-161. The Lobster claw is to the lower right with a very strange elongated star cluster NGC7510. Upper right is the very bright NGC7538, and upper left is of course M52. The number of individual Sharpless nebula in this field is astounding! One peculiar object here is a small deep yellow reflection nebula just to the lower right of the Bubble.

Technical Data: 11" f/2.2 RASA astrograph, ASI6200mm + Baader LRGB filters, Integration time = 1h 35m total, Happy Jack, Az.

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Instrument: RASA 11" f/2.2 Mount: Home Made GEM Camera: ASI6200 MM + LRGB filters Guider: ASI mini w/80mm piggyback refractor Exposure: 1h 35m ( 5 min subs) Location: Happy Jack, Arizona, Elevation: 7000 ft. Sky: Seeing FWHM = 2 arcsec , Transparency 9/10 Outside Temperature: 35 F Image Processing Tools: Maxim DL6: Calibration PixInsight: Alignment, Stacking, Star Removal Photoshop CS2: Curves, Color Correction, Cleanup HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS