GALLERY

NGC 891 - Spiral Galaxy type Sb, in Andromeda

LRGB combination (Click for a larger view 1200 x 1200 px)

 

Details

Spiral Galaxy NGC 891 (GC 527, h 218, H 5. 19), type Sb, in Andromeda

Discovered by William Herschel in 1784.

Right Ascension 02 : 22.6 (h:m)
Declination +42 : 21 (deg:m)
Distance 10 000 (Kly)
Visual Brightness 10 (mag)
Apparent Dimension 13.5 x 2.8 (arc min)

Seeing: Pickering 6 rating - Fair to Good
Optic(s): APO 90/600 @ f/6.7
Mount: ASA DDM 85 - operated by my friend Emil Ivanov
Camera: Artemis Art 4021 - monochrome CCD – 2048 x 2048 px ; 16x16 mm; 7.4 µm x 7.4 µm
Filters: Astronomics LRGB Set, SupaSlim TrueTechnology Computerized Filter Wheel
Dates/Times: 2011-8-28
Location: Rozhen Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exposure Details:

L = 40 min, R = 20 min, G = 20 min, B = 20 min, (Bin 1), Subexposures = 10 min, Total Exposure Time - 100 min

More details: Dark frames reduction
Guiding: None
Processing:

PixInsight / PS

GALLERY


All Contents copyright Velimir Popov unless otherwise noted.