Instrument

Takahashi FSQ-106ED @ f/5.0 (530 mm F.L.)  Captured at 3.5 arcsec/pixel.  Shown resampled to 16.8 arcsec/pixel.

Mount

Paramount ME

Camera

SBIG STL-11000 w/ internal filer wheel, AstroDon 6nm Filters

Acquisition Data

9/15/2008 to 9/28/2008 Chino Valley... with CCDAutoPilot3

Exposure

SII   420 min.  (14 x 30 min. bin 1x1)

Hα    540 min.  (18 x 30 min. bin 1x1)
OIII  420 min.  (14 x 30 min. bin 1x1)

SII,Ha & OIII are mapped to RGB respectively

Software

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

CCDStack to calibrate, register, normalize, data reject & combine.

PhotoShop for non-linear stretching and the color combine.

North is to the right.

The colors of this image more closely follow the Hubble Palette. The presence of sulfur, hydrogen and oxygen are more clearly shown. Red indicates the presence sulfur, green hydrogen and blue oxygen.  With no color manipulation, the image would be basically green, due to the dominance of hydrogen.

There are a lot of objects in this image.  Place your mouse over the image to see labels of the objects.