TwinOaks Observatory Gallery

NGC 2244
The Rosette Nebula

(These are very large files - Broadband recommended on anything over the 50% size)

(Click on image for 50% Resolution)

Date:	December 22, 2005

Exposure:	RRGB 180:180:180:90 : 12 x 900 R, G, and 6 x 900 B

Processing:	CCDSoftV5 for image acquisition, MaxIm for Image calibration,(5 flats each RGB, dark subtracted and median combined, 20 bias frames median combined, 10-900s darks median combined), alignment, normalization, color combining. PixInsight for background correction and color gradient removal. Photoshop CS for final color balance and jpg conversion. The R layer was used for the luminance after some additional adjustments to bring out the detail.

Conditions:	Average, Mag 3-4 Skies

Scope:	Takahashi FSQ-106N

Camera:	SBIG STL-11000, Astrodon LRGB filters, -20°

Comments:	The weather has been fairly unstable so I had to take bits and pieces over multiple nights. Many nights it would start out very clear, but high clouds would roll in during the night and ruin most of the images. I threw away 3 hours of luminance data because of this. The blue data is less than what I needed but just couldn't get the weather to cooperate. This is my first light image with this combo. The the top right corner shows the worst elongation as all I had was the compression fitting on the 2 inch nosepiece, but I have the correct adapter on order and this should get the camera square to the optical path.