|
Instrument |
12.5" RCOS @
~f/9 (2880 mm fl) 0.64 arcsec / pixel. Zoomify image scale is
0.64 to 3.08 arcsec / pixel. |
Mount |
Paramount ME |
Camera |
SBIG STL-11000 w/ internal filter wheel, AstroDon Gen I Filters |
Acquisition Data |
5/16/2010 to 6/9/2010
Chino Valley, AZ... with CCDAutoPilot3 & CCDSoft, AOL guided |
Exposure |
Lum (no filter)
390 min (26 x 15 min, bin 1x1)
RGB
225 min ( 5 x 15 min each, bin 2x2) |
Software |
-
CCDSoft, CCDStack,
Photoshop CS w/ the Fits Liberator plugin. Noel Carboni's actions
and Russell Croman's GradientXTerminator.
-
eXcalibrator for (u-g), (g-r) color calibration, using 5 stars
from the SDSS7 database.
-
PixFix32 (pre-beta) to
repair hot/cold pixels and column defects.
-
CCDStack to calibrate,
register, normalize, data reject, combine the sub exposures, LRGB
color, and luminance deconvolution.
-
PhotoShop for LLRGB
combine &
on-linear stretching.
|
Comment |
ID |
Object
Type |
~Dist M
Light-Yr |
NGC 5945 |
Barred
Spiral Galaxy |
270 |
NGC 5947 |
Barred Spiral
Galaxy |
290 |
NGC 5943 |
Elliptical/Spiral
Galaxy |
278 |
NGC 5934
NGC 5935 |
Interacting Spiral
Galaxies |
280
264 |
UGC 09873 |
Spiral
Galaxy |
276 |
PGC 055238 |
Spiral
Galaxy |
272 |
PGC 055173 |
Spiral
Galaxy |
252 |
MaxBCG J232.17007+42.93827 |
Galaxy
Cluster |
3,580 |
North is ~ to top.
The image is rotated 10° clockwise.
NGC 5945, along with
the other galaxies in the image, are located in the constellation
Boötes. NGC 5945 is a beautiful example of a barred galaxy, with two
nearly circular spiral arms. The two arms appear to have a high
concentration of hot young blue stars. Just above the rings is a
blue area, of possibly similar stars, that appear to have become
slightly disconnected from the galaxy. This area probably created
the oval ring that surrounds the galaxy.
To the far right, of NGC 5945, is a wonderful pair of interacting
galaxies... NGC 5934 and 5935.
At the center of the image is the NGC 5943. Closer examination
reveals a jet coming from the left side of the galaxy. This jet may
be related to the large, and faint, cloud that extends to the upper
right and lower left of NGC 5943.
Unfortunately, searching the Internet revealed little information
about these galaxies. The above is all speculation by the author...
an amateur astronomer.
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