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Object
............................................ NGC 891
Constellation ............................... Andromeda
Distance + Ap. Magnitude......... 27.3 million Light years - 10.8
RA / DEC
.....................................
2h:22m.33sec /
+42° 20m.57sec
Date + Time ............................... 20 - 24/10/2013 - 17:00 UTC
Location .................................... "Nunki
Observatory" - Skiathos
Optics .........................................
Talahashi TSA 102 f/8
Tools .......................................... The SKY
X
Camera ..................................... SBIG
ST10XE with CFW10 (Astrodon filters)
Exposure Time.......................
Luminance: 48 X 300 sec (1X1) RGB: 4 X 600sec (1X1)
More Details ...........................
Environment Temperature : 15oC Camera Temperature 0 οC
Mount ....................................... Paramount
ME
Guiding .................................... Self guided
Processing Details ................ Photoshop ,
Maxim , CCDsoft
Notes ........................................
Weather:6/10 - Transparence: 4/6 - Humidity : 75-84 %
Target details .........................
NGC 891 (also
known as Caldwell 23)
is an edge-on unbarred
spiral galaxy (actually barred)
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.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.In 1999, the Hubble
Space Telescope imaged
NGC 891 in infrared.In
2005, due to its attractiveness and scientific interest, NGC 891 was
selected to be the first
light image of the Large
Binocular Telescope. In
2012, it was again used as a first light image of the Discovery
Channel Telescope with the Large Monolithic Imager. |
