OBJECT: NGC 6888 (Crescent Nebula)

DATE(S): 07-17-08

OPTICS: Dream 16” Corrected Newtonian @ F3.75

MOUNT: Chronos HD32

CAMERA: FLI MicroLine 16803

GUIDING: Starlight Xpress LodeStar with Orion 80mm F5 scope

FIELD SCALE: 1.24 arc seconds per pixel

CHIP TEMP: -15C

FILTER(S): AstroDon 50mm Square

LOCATION: Sierra Remote Observatories, Shaver Lake, CA, 4,610 feet

EXPOSURES: 10 min X 7 (Ha)

BINNING: 1 X 1

CAMERA CONTROL: Maxim DL

PROCESSING: CCDStack, PhotoShop CS

IMAGE NOTES: I found an unusual gas bubble in this image (circle). This area subsequently was imaged by Dr. Keith B. Quattrocchi.

Press here for a link to Dr. Quattrocchi's excellent description