|
|
|
Instrument |
12.5" RCOS @
~f/9 (2880 mm fl) 0.643 arcsec / pixel. Shown
resampled to 2.57 arcsec/pixel. |
|
Mount |
Paramount ME |
|
Camera |
SBIG STL-11000 w/
internal filter wheel, AstroDon Filters |
|
Acquisition Data |
5/4/2008 to 5/27/2008
Chino Valley... with ccdSoft and CCDAutoPilot3 |
|
Exposure |
Lum
300 min. (30 x 10 min. bin 1x1)
RGB 180 min. ( 6 x 10 min. bin 2x2) each |
|
Software |
CCDSoft,
CCDStack, Photoshop CS w/ the Fits Liberator plugin, Russell
Croman's GradientXTerminator and Noel
Carboni's actions.
CCDStack to register,
normalize, data reject, combine and sharpen.
PhotoShop for the
color combine. |
|
Comment |
North is to the
left
M51 is perhaps the
original spiral nebula. The large galaxy with well defined spiral
structure is also cataloged as NGC 5194. Its spiral arms and dust
lanes clearly sweep in front of its companion galaxy (lef), NGC
5195. The pair are about 31 million light-years distant and lie
within the boundaries of the small constellation Canes Venatici.
Source: NASA APOD
|
════════════════════════════════════════
|
Instrument |
Celestron C11 @ F/6.1
(1705 mm) 1.087 arcsec / pixel |
|
Mount |
Losmandy G11 |
|
Camera |
SBIG ST-7 with
CFW-8A color wheel |
|
Acquisition Data |
4/16/05 to 5/21/05
Near downtown Seattle |
|
Exposure |
Lum 285 min
(19 X 15 min)
Red 120 min (8 x 15, bin 2 x 2)
Green 120 min (8 x 15, bin 2 x 2)
Blue 176 min (8 x 22, bin 2 x 2) |
|
Software |
CCDSoft, FocusMax,
CCDOPS, Sigma Clip (pre beta 11), PhotoShop CS and Paint Shop Pro. The DitherMat was used to dither the luminance
layer. |
|
Comment |
North is to the
right. |
════════════════════════════════════════
|
Instrument |
Celestron C11 @ F/7.2
(2000 mm fl) 0.93 arcsec / pixel |
|
Mount |
Losmandy G11 |
|
Camera |
SBIG ST-7 with
CFW-8A color wheel |
|
Acquisition Data |
5/23/04 to 6/18/04
Near downtown Seattle |
|
Exposure |
Lum 231
min. (33 x 7)
Red 84 min. (12 x 7, bin 2x2)
Green 84 min. (12 x 7, bin 2x2)
Blue 132 min. (12 x 11, bin 2x2) |
|
Software |
CCDSoft & Paint
Shop Pro |
|
Comment |
North is to the
right. |
|
