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NGC 7635 - The Bubble Nebula 

NGC 7635 or Bubble Nebula, Sharpless 162 is a emission nebula in the constellation Cassiopeia. The "bubble" is created by the stellar wind from a massive hot magnitude young central star SAO 20575. The distance of the Earth is 7100 light year and has a diameter of 6 light-years.

double

Location / Date

Μauna Keratea Obs July 2011

Telescope

GSO RC 10" f8 (Ha) & WO ED70 f6,5 (SiiOiii)

Field Flattener

Astro -Tech 2” για το WO ED70

Mount

Sky Watcher EQ6 Pro

Camera

QHY9 Temp -25c

Guiding TS OAG, Finder 9x50 qhy5

Filters / Exposures

 Ha : 30x600 bin 2x,  Oiii : 18x900 bin 3x,, Sii : 14x900 bin 3x

Total Exposure Time

~ 13 Hours

Software

Nebulosity 2, Deep Sky Stacker, Μaxim DL, PixInsight, Photoshop CS5

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