<![CDATA[NGC 281 - Pacman Nebula]]> http://gallery.cuttinedgeobservatory.com/v/nebulae/ngc281/ en-us Gallery 2 RSS Module, version 1.1.8 Fri, 10 Apr 2026 08:38:54 +0000 120 http://gallery.cuttinedgeobservatory.com/d/688-2/ngc281.jpg <![CDATA[NGC 281 - Pacman Nebula]]> http://gallery.cuttinedgeobservatory.com/v/nebulae/ngc281/ <![CDATA[Ha]]> http://gallery.cuttinedgeobservatory.com/v/nebulae/ngc281/NGC281-Ha.jpg.html http://gallery.cuttinedgeobservatory.com/v/nebulae/ngc281/NGC281-Ha.jpg.html
The PacMan Nebula

Exposure
- 13 x 30m subs Astronmik 6nm Ha
- 6.5 hours total exposure

Equipment Used
- Tele Vue NP-127is
- SBIG STL-11000M
- Paramount ME
- Tele Vue Focusmaster Focuser

Processing
CCDStack
1) Calibration with flats and darks
2) Image registration
3) Normalization (Auto)
4) Data rejection (STD sigma)
5) Median combine
6) DPP Stretch
7) Export each channel to TIF

Photoshop CS3:
1) 100% center crop
2) Save as JPG 100% Quality]]> Chris Johnson photo Wed, 24 Dec 2008 00:42:19 +0000 <![CDATA[HaRGB]]> http://gallery.cuttinedgeobservatory.com/v/nebulae/ngc281/ngc281.html http://gallery.cuttinedgeobservatory.com/v/nebulae/ngc281/ngc281.html
The PacMan Nebula

Exposure
- LRGB Filters
- 75:40:40:40 @ 15:10:10:10 per sub
- 13 x 30m subs Astronmik 6nm Ha
- 9.75 hours total exposure

Equipment Used
- Tele Vue NP-127is
- SBIG STL-11000M
- Paramount ME
- Tele Vue Focusmaster Focuser

Processing
CCDStack
1) Calibration with flats and darks
2) Registration and align per channel
3) Image registration
4) Normalization (Auto)
5) Data rejection (STD sigma)
6) Median combine
7) Export each channel to TIF

Photoshop CS3:
1) RGB Combine
2) Apply HaRGB technique using multiple Ha as L with increasing opacity
3) 100% center crop
4) Save as JPG 100% Quality]]> Chris Johnson photo Fri, 05 Dec 2008 20:45:41 +0000