Bubble Nebula (NGC7635)


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Sectional prints are available in dimensions that are multiples of 20cm (about 8 inches). The following sizes and prices are for example only. Please select the desired width below to get a quotation.

Size Price
80x60cm $90
120x80cm $140
160x120cm $210

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The Bubble Nebula is a hydrogen-rich emission nebula in the constellation Cassiopeia. It is 11,000 light years from Earth. This photo also includes the open cluster M52 and NGC7538.

This image is a composite of shots from two sessions.  The area immediately around the bubble is from my AP 142 at f/7.5 (1065mm focal length), while the rest of it was done with the AT111EDT at f/5.6 (622mm fl).

The wide shot was the first image I captured with my Astro-Physics Mach1GTO mount. Captured on 2011-10-25 & 26 at Wa-chur-ed Observatory using H-alpha for red plus green and blue filters. The bubble area was captured with H-alpha and OIII filters.

This is a great target. In addition to the unique look of the bubble, there are interesting areas all around it that can make for a good composition at many different focal lengths.

Scope: AT111EDT at f/5.6 & AP 142 at f/7.5
Mount: AP Mach1GTO
Camera: QSI 583 at –25C
Exposure (wide): 12 x 900s H-a, 20 x120s G, 17 x 120s B (4 hrs 14 mins total)
Exposure (bubble): 6 x 900s H-a, 4 x 900s OIII (2 hrs 30 mins total)

About Greg Marshall

I am a retired electronics engineer and after a few months of enjoying my leisure I began to miss doing product development. My astronomy hobby always needed new solutions to unique problems, so I decided that whenever I came up with a good solution I would try to make it available to others.

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