NGC 7635 - Bubble Nebula
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NGC 7635 - Bubble Nebula
Edmonton, Alberta, Canada
Exposures: Ha 33x20m = 11hr.
Processing: SGP, MaximDL, Gimp
Telescope: CFF132,STF8300M,GM1000
Guider: LE80OTA,LodestarX2,GSO2X
NGC 7635, also known as the Bubble Nebula is an emission nebula in the Cassiopeia constellation.
This is a monochrome Hydrogen-alpha image. It was taken from my backyard over three separate nights during the summer of 2018. The total integration time was 11 hours.

The partial star cluster in the upper right is M52. It is a large and bright open cluster in Cassiopeia. Below are links to an images that shows the entire cluster and the nebula.

I had originally intended to collect RGB data to make a full color image. But excessive smoke from extensive forest fires that summer prevented me from finishing the project. The smoke was relentless and continued almost until September. Then it rained and snowed for most of September.

By the time the weather cleared in October, the Bubble nebula was well out of reach for imaging. So what you see is all I got: 11 hours of H-alpha. I did actually try RGB one night during the smoke. The data was bad. No surprise there but I had to try it at least once just to make sure.

M52 and the Bubble Nebula
M52 - Open Cluster in Cassiopeia. Taken with a C8 SCT and a D90 DSLR camera.
M52 Open Cluster
M52 and the Bubble Nebula. RGB image taken with an NP101is refractor and an STF8300M CCD camera.
M52 and the Bubble Nebula
NGC 7635 - Bubble Nebula. Monochrome hydrogen-alpha image taken with a CFF 132 refractor and an STF-8300M CCD camera.
Bubble Nebula in Ha
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