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July, 2013:

Sadr to Crescent – 9 panel mosaic

This one took quite awhile to get done. This was done over six different nights, representing a total of 1200 miles driven to and back from Anza, the local dark site I use. Quite a lot of work to stitch together!

I had loads of problems along with way, issues with tracking, noise (had problems with my DSLR cooler), a few crummy nights full of clouds and I had completely disassembled my scope more than once to figure out some collimation issues.

I tried to get around 3 hours per frame, some ended up being more, some less due to weather and these darn short summer nights.

Image Location and Date: Orange County Astronomers dark site in Anza, CA, May, June, July
Mount: Orion Atlas EQ-G
Imaging scope: Orion 8″ f3.9 Astrograph
Imaging FL: 800mm
Imaging focal ratio: f3.9
Imaging camera: Canon 1100D (Rebel T3) Modded
Lights: 317x300sec @ ISO 1600

Calibration: Darks, flats, Bias
Guide scope: Tair-3c with Orion StarShoot Auto Guider
Other details: guiding with PHD, captured with APT, processed in PixInsight + PS