Scope: Megrez II
f/4.1; Location: Blair Valley, Anza Borrego Desert CA; 5
Feb. 2005; Camera: ToUcam SC3
Exposure: 24 x 24 sec Luminance exposures with Baader IR Block
Filter; 16 x 24,24,38 sec R,G,B
Processing: All exposures captured in K3CCDTools 2. Alignment and stacking was done with Registax
3 and saved as FITs. LRGB channels were co-registered in IRIS. Luminance and Color channels were scaled and rough color balanced in
IRIS. Due to the low horizon for this object from my location, the blue
exposure was lengthened to compensate for atmospheric extinction on the shorter
wavelength. Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB). Color
balancing and final touches were done in Photoshop. SGBNR (PixInsight LE) was used to smooth background noise on the
final result. Resized to approximately 800x600.
This image was a guided exposure. In this image NGC 2477 is a centrally dense open
cluster that starts to look like a globular cluster. It is located in the constellation of
Puppis. The bright star on the bottom edge is a magnitude 4.49 SAO198545 . Horizontal FOV is about
Equatorial 2000: RA: 07h 52m 10s Dec: -38°32'00"