NGC891_2009-09-25

Galaxies - NGC 891

R.A.: 02h 22m 33.4s
Dec.: 42° 20' 57"
Mag.: 10.8

NGC 891 is an edge on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. It was discovered by William Herschel on October 6 1784. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus.^[3]Visually, the object is visible in small to moderate size telescopes as a faint elongated smear of light with a dust lane visible in larger apertures.

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NGC 891 – Cigar Galaxy

Date/time:
22.09.2009 23:50 to 23.09.2009 02:55
25.09.2009 23:25 to 26.09.2009 00:55
Az./Alt. positions:
76° / 49° to 124° / 78°
74° / 47° to 89° / 61°
Ambient conditions: 10°C, transparency 5/5, seeing: 4/5
Location: Trier, Germany

Equipment:
Optics: TMB 130 SS f/7 with TSFlat 2
Mount: CGE
Guiding: selfguiding with ST-4000XCM
Camera: SBIG ST-4000XCM
Filter: IDAS LPS

Acquisition:
Software: Maxim DL 5
FOV, Image scale: 57.2 x 57.2 arcmin, 1.68 arcs/pixel
Sub-exposures: 4h 10min (25 x 10min) lights at –20°C with dithering,
100 dark frames,
30 x 0.3s + 30 x 0.5s EL flats,
100 bias for flats calibration

Processing:
Images plus 3.75: Calibration, Exc Avg stacking, DDP, Deconvolution
CS3: Curves and levels adjustments, Match color,
Carbonis Actions, GradientXterminator,
Noiseware Professional

Comments:

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Information

Filename: galaxies/ngc891_2009-09-25_full.jpg
Filesize: 1366777 Kb
Download limit: unlimited

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