|
Object |
NGC 4490
&4485 Cocoon Galaxy |
|
Coordinates |
RA:
12 30 30.8 Dec: +41:40:27 Camera PA: 338E |
|
Imaging
by |
Greg
Morgan |
|
Date(s) |
Data:
May 22 to June 24, 2011 |
|
Optics |
RCOS
16 inch ION Milled f/9 Ritchey-Chrétien
(on loan from Mike Mayda, thanks Mike) |
|
Mount |
Paramount
ME |
|
Camera |
Apogee
Alta U16M, 9 micron 4096 x 4096 pixels |
|
Guiding |
Off-axis
with the Astrodon Monster MOAG and SBIG ST-402XM |
|
Field Scale |
0.5 arcseconds / pixel |
|
FOV |
Cropped
to 25' x 19' |
|
Chip Temp |
-15 C |
|
Filter(s) |
Astrodon Gen 2
Lum, Red, Green, and Blue |
|
Location |
Sierra
Remote Observatories, Shaver Lake California 4,610 feet |
|
Exposure(s) |
L=14, R=10, G=6,
B=10x1800 seconds (20 Hours Total) |
|
Binning |
1x1 for all
filters |
|
Software |
CCDAutopilot,
MaxIm
DL,
TheSky 6, CCDStack 2
with
CCDIS-p
registration, 64-bit
CS4 plug-in for Neat
Image Pro and GradientXTerminator. |
|
Image notes
|
A mag
4.24 star by the name of Chara is located 39 arc-minutes
from the center of the FOV toward the lower left corner of
the field. Note the rainbow reflections in the corner
from Chara. The image below is the full 35 'x 35 FOV.
|
