NGC869
"Double
Cluster"
Constellation-
Perseus
Right
Ascension: 2h 19m 6 s
Declination:
57° 9' 0"
Distance:
7500 light years
Visual
Brightness: mag 3.7 and 3.8
Apparent
Dimension: 60 arc minutes
Image
information-
Date
taken- September 21, 2004
Telescope/Focal
length/Camera/Temperature- C11 OTA @ f/6.8, ST-8XE NABG @ -20C, autoguided with PHD 2.5 or internal guide chip
Integrations- LRGB, L = 4 x 300 seconds binned 1x1, RGB = 4 x 300 seconds
each binned 2x2
Processing-
Flats and darks in CCDSoft, aligned, combined, and processed Astroart 5 and
Photoshop CS5