Sh2-155 / cave nebula / Cardwell 9

exposed at August 2012

LRGB 1200px

camera : Moravian G2-8300
lens: 12 " Newton f/2.95 (ASA reducer/corrector 2 " 0.73x)
filter : Baader LRGB
exposure software : MaximDL 4
guiding: OAG Rene Rogge

FWHM luminance channel: about 4.2-4.5
Flatness midle : about 0.04

exposure time :

L: 30 x 5 min
R: 30 x 5 min
G: 32 x 5 min
B: 32 x 5 min
total LRGB: 10 h 20 min

location : Home observatory Leopoldshöhe
image processing : Fitswork (image addition, Flat correction) / Astroart 5 / Regim Color calibration / PS CS5 (final processing)
spezifics : bad Seeing / high clouds / two nights
picture size 2000px