|
Instrument |
Takahashi FSQ-106ED @
f/5.0 (530 mm F.L.) Captured at 2.1 arcsec/pixel. Shown at
6.42 and 16.70 arcsec/pixel. |
|
Mount |
Losmandy G11 with Gemini L4 v1.0 |
|
Camera |
SBIG STF-8300M Self
Guiding Package w/ mono ST-i, using AstroDon Ha and Baader LRGB filters. |
|
Acquisition Data |
2/13/2015 to
3/8/2015 Chino Valley, AZ... with CCDSoft & CCD Commander |
|
Exposure |
|
This is a four panel mosaic.
The exposures are
duplicated for each panel. |
|
Ha |
180 min. (12 x
15 min. bin 1x1) |
Click
here for the LRGB version. |
|
Software & Processing Notes |
-
CCDSoft, CCDStack,
PixInsight & Photoshop CS6.
-
CCDStack to
calibrate all sub exposures.
-
PixInsight
processing includes registration and stacking the Ha data, creating the mosaic, gradient repair, non-linear stretching with HistogramTransformation,
HDRMultiscaleTransform and LocalHistogramEqualization.
-
PhotoShop for the
final touch-up.
|
|
Comment |
North is to the left.
IC 2177 is a region of
nebulosity that lies along the border between the constellations
Monoceros and Canis Major. It is a roughly circular H II region
centered on the Be star HD 53367. This nebula was discovered by
Welsh amateur astronomer Isaac Roberts and was described by him as,
"pretty bright, extremely large, irregularly round, very diffuse."
The name Seagull Nebula is sometimes applied by amateur astronomers
to this emission region, although it more properly includes the
neighboring regions of star clusters, dust clouds and reflection
nebulae. This latter region includes the open clusters NGC 2335 and
NGC 2343 and the reflection nebula NGC 2327.
Source:
Wikipedia |
