|
|
|
Instrument |
12.5" RCOS @
~f/9 (2880 mm fl) 0.64 arcsec / pixel. The Zoomify image scale
is 1.28 to 3.07 arcsec / pixel. |
|
Mount |
Paramount ME |
|
Camera |
SBIG STL-11000 w/ internal filter wheel, AstroDon 6nm Ha Filter |
|
Acquisition Data |
7/20/2011 to 8/21/2011 Chino Valley, AZ... with CCDAutoPilot3
& CCDSoft. AOL guided |
|
Exposure |
Ha 540 min.
(18 x 30 min. each, binned 1x1)
Click
here for the RGB color image.
Click
here for narrow band color mapped images. |
|
Software |
-
CCDSoft, CCDStack,
Photoshop CS and Noel Carboni's actions.
-
PixFix32 (pre-beta) to
repair column defects.
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CCDStack to calibrate,
register, normalize, data reject, combine the sub exposures.
-
PhotoShop
on-linear stretching.
-
Noiseware Pro, a PhotoShop plug-in.
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Comment |
North is to the left.
The Tulip Nebula, or
Sharpless 101 (Sh2-101) is located in the constellation Cygnus. The
emission nebula is about 6,000 light-years for Earth. It was
catalogued by astronomer Stewart Sharpless in 1959. |
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