Rosette Nebula - Wide Field
CLICK HERE FOR HIGH RESOLUTION - (1599x1199)
Scope: Sigma 150 mm APO at f/4; Location: Blair Valley, Anza Borrego Desert, CA; 14 February, 2010; Camera: Canon XT 350D (Baader ACF modified)
Exposure: 16 x 6 min (unfiltered) ISO 400 , 7 Darks, no Flats
Processing: Images were captured with DSLR Focus and saved as RAW file format. Exposures were decoded and dark corrected in IRIS. Exposures were aligned and stacked in IRIS with Sigma Median. Dark point equalization and rough color balance were done in IRIS. Gamma and saturation adjustments were also done in IRIS. Stretch and crop adjustments were done in Photoshop. Some star repair was performed on edge stars. Background noise reduction was performed by PixInsight LE (SGBNR). Final stretching and touch up was done in PhotoShop. The presented image is a crop from the full frame and resized to a lower sampling rate. Final Image size is approximately 3474x2314 - re-sampled to 1599x1199.
North is to the right in this image. This image is guided. This is a wide field image of the Rosette Nebula (to the right). The smaller and fainter nebula to the left is Sharpless 280. The Rosette Nebula is approximately 5,500 light years distant from Earth. Acloseup view of the Rosette Nebula can be seen here. The Horizontal FOV is little over 7.5 degrees.
Image Center is approximately - Equatorial 2000: RA: 06h 32m 42s Dec: +03°48'52"
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