Details in the Butterfly Nebula (IC 1318)


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This close-up in RGB color shows a part of the extended nebulosity, designed as IC 1318 east of the mag 2 star gamma-Cygni (Sadr) -following the rays to the outside right of the image. The bisected nebula region in the center of this image is named the Butterfly Nebula because of it's two-winged appearance seperated by a dark nebula.

Find a mosaic of this area in NB color here.
Find a close-up of the central swirl area in H-alpha light here.
Find a wider view of the whole area in H-RGB light here.

North is up.


Technical Details


16" cassegrain in secondary focus at f/10

Mount MK-100 GEM
Camera SBIG STX-16803 at -30C, STX 5-pos filter wheel
Filters Baader LRGB 65 x 65mm
Date Sep 13, 2010
Location Wildon/Austria
Sky Conditions mag 5.5 sky, temperature 15 C, seeing 1.5-2"
Exposure L:R:G:B = 40:40:40:60 minutes per frame (20 minute sub-exposures), all 1x1
Programs used Maxim DL 5
Photoshop CS3