Instrument

12.5" RCOS @  ~f/9 (2880 mm fl) 0.643 arcsec / pixel.  Zoomify image scale is 3.34 to 1.28 arcsec / pixel.

Mount

Paramount ME

Camera

SBIG STL-11000 w/ internal filter wheel, AstroDon Filters

Acquisition Data

9/21/2009 to 10/15/2009 Chino Valley, AZ... with CCDAutoPilot3 & CCDSoft.

Exposure

Lum    435 min (29 x 15 min, bin 1x1)

RGB    360 min (  8 x 15 min each, bin 2x2)

Software

CCDSoft, CCDStack, Photoshop CS w/ the Fits Liberator plugin and Noel Carboni's actions.

eXcalibrator for (b-v) color calibration, using 10 stars from the NOMAD1 database.

PixFix32 (pre-beta) to repair hot/cold pixels and column defects.

CCDStack to calibrate, register, normalize, data reject, combine the sub exposures & RGB color.

PhotoShop for LRGB combine &  on-linear stretching.

North is to the bottom... it looks much better upside down.

SH2-136 is an illuminated dark nebula, about 1,200 light-years away, towards the constellation Cepheus. Its spooky appearance reminds one of Halloween ghosts and goblins.