Image acquisition: Tom Bramwell
Image processing: Tom Masterson and Tom Bramwell
We really enjoyed working on this beautiful target. The Bubble Nebula was formed by stellar winds from a really hot star at its core, blowing all surrounding gas outward to form the bubble. This gorgeous emission nebula is located 8000 light years away, and can be found in the northern sky right next to Cassiopeia. It stays nice and high all night long this time of year - It currently rises for me around 9:30 pm and doesn't even cross the meridian until 4am. This enabled me to get a lot of exposure on it, over the course of just a few days. We had a clear spell here in San Jose, and I really tried to make the most of it. We hope you like it. Please feel free to share!
More can be learned about the Bubble here:
https://en.m.wikipedia.org/wiki/NGC_7635Acquisition Details:
OTA: Celestron C8 w/Starizona SCT Corrector
Imaging Camera: QSI 6120wsg-8
Guide Camera: Lodestar X2 (OAG)
Filters: Astrodon 3nm Ha/NII/SII/OIII, Hutech IDAS
Mount: Avalon Instruments M-Uno Fast Reverse
Taken 7/19-7/23 in the Silver Creek area of San Jose, CA with clear, still skies, under a full moon.
One channel per night. All frames shot at -20c; 20 ea flats, darks, bias
12 X 1800sec NII
10 X 1800sec OIII
10 X 1800sec SII
12 X 1800sec Ha (used as luminance)
R: 40% NII / 60% SII
G: 40% OIII / 30% NII / 30% SII
B: 100% OIII
LUM: 100% Ha
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