NGC 891 Widefield
Characteristics:
Magnitude: 10.0
Size: 13.5'
Distance: ?about 10 million light years
RA: 02h 22m 36s
Dec: 42 degrees 21' 00"
Description:
The beautiful edge-on galaxy NGC 891
is located in Andromeda. This spiral galaxy contains a broad band
of dust cutting through the center of the disk,
preventing transmission of background light. Note several other
small, faint galaxies in this 3 hour luminance image. Be sure to
explore the above links for a larger grayscale image, as well as the
corresponding color image.
I was pleased with the amount of detail
captured, even in some of the smaller spiral galaxies, with the 4"
scope.
Photographic Details:
Date: October 1, 2005.
Scope: Takahashi
FS-102 at f6 with TOA-130 focal reducer, on the G11 Losmandy
Mount.
Autoguider: SBIG STV with
e-finder.
Camera: Maxcam CM10.
Filter: Astronomiks
Type II LRGB filter set; IDAS-LPS filter.
Exposures: L: 36
x 5' unbinned, total luminance
exposure 3
hours. R:G:B 5 x 8' each, unbinned.
Conditions: Temperature 50 degrees F, above-average
transparency, poor seeing, mild breeze, clear. A beautiful night
with
Mars shining brightly.
Post-processing:
Subs were
debloomed with Ron Wodaski's
Debloomer software, calibrated and aligned in Maxim.
Sigma combined using RC Sigma Reject, followed by DDP
in ImagesPlus (IP). Further processing in Photoshop CS (16
bit format).
Please
note: Graphics on this website
may not be reproduced without author permission.
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