Crescent Nebula-NGC6888

The Crescent Nebula in Cygnus. This is a composite image made from a stack of 31 180 second images captured at ISO 1600. Calibrated and processed in Images Plus, I used a modified Canon XSi (450D) DSLR camera mounted on an Astro-Tech AT102ED refractor with a field flattener. Losmandy G11 mount autoguided by PHD autoguiding software with Orion Starshoot autoguider camera on an Orion Short Tube 80mm.


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