José Manuel Juárez|Astrophotography

The Crescent Nebula (
NGC6888) & The Cygnus Bubble Nebula (PN G75.5+1.7)
In Ha and OIII light

NGC 6888 & PN G75.5+1.7
 Shown at  33% size                                                                                          click for 60% size        
Location:   Àger, Montsec
Date:   July, 2010 - March, 2012
Camera:   QHY9 (Kaf 8300) @ -20ºC
Instrument:   Borg 77ED @ f/5.5
Mount:   Losmandy G11
Filters:   Baader Ha 7nm & Baader OIII 8nm
Exposure:   Ha: 260 minutes (13x20 minutes sub-exp.) - OIII: 220 minutes (11x20 minutes sub-exp.) Total exp.: 480 minutes
Software:   Maxim DL, Photoshop
  Observations:  Bicolor Technique for combining Ha and OIII images (R-Ha, G-Ha+OIII, B-OIII)