|
Instrument |
12.5" RCOS @
~f/9 (2880 mm fl) at 1.28 arcsec/pixel. Shown at 1.28 and 3.07 arcsec/pixel. |
|
Mount |
Paramount ME |
|
Camera |
SBIG STL-11000 w/
FW8 filter wheel, AstroDon Gen-2 Filters |
|
Acquisition Data |
1/10/2014
to 3/6/2014 Chino Valley, AZ... with CCDAutoPilot, CCD Commander & CCDSoft,
AOL guided. |
|
Exposure |
|
Red |
150 min. (10 x
15 min.) Bin 2x2 |
|
Green |
150 min. (10 x 15 min.) " |
|
Blue |
195 min. (13 x 15 min.)
" |
|
|
Software & Processing Notes |
-
CCDSoft, CCDStack,
PixInsight & Photoshop CS6.
-
eXcalibrator
v4.25 for (g:r) color balancing, using 186 stars from the
SDSS-DR7 database.
-
CCDBand-Aid to repair
KAI-11000M vertical bars.
-
CCDStack to
calibrate the sub
exposures.
-
PixInsight
processing includes sub exposure registration and stacking, RGB
creation, gradient repair and non-linear stretching with HistogramTransformation.
-
PhotoShop for final touch-up.
|
|
Comment |
The nebula is shown
with north to the top.
Also catalogued as NGC
2099, M37 is in the constellation Auriga at a distance of about
4,500 light years. The age of the cluster is estimated as between
350 and 550 million years. M37 contains about 150 stars brighter
than magnitude 12.5 and at least 12 red giants.
Giovanni Battista Hodierna discovered the cluster sometime before
1654. Charles Messier independently rediscovered it in 1764 as
object number 37 in his catalog. |
