Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.



Sharpless 132 is a very faint emission nebula, it locates at the border of Cepheus and Lacerta. Distance is about 10.000 light years. This image covers about 210' x 160', that's about 3,5 x 2,7 degrees. Resolution is 3,79 arc seconds/pixel.



Processing work flow:

Image acquisition, MaxiDL v5.07.

Stacked and calibrated in CCDStack.

Levels, curves and color combine in PS CS3.



Equipments:

Tokina AT-X 300mm f2.8 @ f2.8

Platform and guiding, Meade LX200 GPS 12" @ f5

Camera, QHY9

Guider, Lodestar

Image Scale, 3,79 arc seconds/pixel



Exposures:

Baader H-alpha 7nm 12x1200s, binned 1x1

Baader O-III 8,5nm 12x600s, binned 2x2

Baader S-II 8nm 10x600s, binned 2x2