NGC 7635, Bubble Nebula

Technical Details:

Object(s): NGC 7635, Bubble Nebula
Observing Site: Azor Observatory, Las Rozas, Madrid, Spain
Date: October 6, 8 and 9 (H alpha data), 12, 13 and 14 (OIII and SII data), 2007 
Camera: SBIG STL-11000M @ -20ºC
Telescope: ASA N10 Astrograph @ f/3.6, Losmandy G-11 mount
Filters: Astrodon 6nm H alpha, SII and OIII
Exposure: 360 minutes (Ha), 270 (OIII) 270 min (SII)  30 min subs, bin 1x1 
Processing Software: Maxim DL, Photoshop
Comments: HST, fragment, shown at 125 % size 

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