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