|
|
|
Instrument |
12.5" RCOS @
~f/9 (2880 mm fl) 0.64 arcsec / pixel. The Zoomify image scale
is 0.64 to 3.40 arcsec / pixel. |
|
Mount |
Paramount ME |
|
Camera |
SBIG STL-11000 w/ internal filter wheel, AstroDon Gen II Filters |
|
Acquisition Data |
5/20/2012 to 6/11/2012 Chino Valley, AZ... with CCDAutoPilot3
& CCDSoft. AOL guided |
|
Exposure |
|
Lum |
390 min. (13 x
30 min. bin 1x1 ) |
|
RGB |
540 min. (12 x
15 min. each, bin 2x2) |
|
|
Software |
-
CCDSoft, CCDStack,
Photoshop CS3 w/ the Fits Liberator plugin.
-
eXcalibrator v3.1 (g-r) color balancing, using 37 stars
from the SDSS-DR8 database.
-
PixFix32 (pre-beta) to
repair column defects.
-
CCDBand-Aid (pre-beta) to repair the
STL-11000M vertical bars.
-
CCDStack to calibrate,
register, normalize, data reject, combine the sub exposures,
and
the RGB color image.
-
PhotoShop
none-linear stretching
and the LRGB combine.
-
Noiseware Pro, a PhotoShop plug-in.
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|
Comment |
North is to the left.
At a distance of 122 million light-years, NGC 5371 is a face-on Sbc
barred spiral galaxy in the constellation Canes Venatici. As an SBc
galaxy, NGC 5371 looks similar to our galaxy, The Milky Way. NGC
5371 is also cataloged as NGC 5390.
Just outside NGC 5371,
at about 4 o'clock, is a bright blue quasar at magnitude 18.3. With
a redshift of z = 1.595, its light travel-time is about 9.3 billion
years.
To the far right-center is the galaxy UGC 8841, at a distance of 116
million light-years.
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