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Saturday, February 21, 2015

A two frame mosaic of the Veil Nebula in light of ionized oxygen only

I started an imaging project of the Veil Nebula at 05. of  November 2014. After this short period of time, clouds rolled in for about three months and my project was interrupted. Now the Veil nebula is too low in the horizon and I need to wait to next Autumn to finalize this image. In two nights, I shot 36 frames of O-III emission, 20 min. each, total 12 hours. There are two panels stitched together, exposure time for each panel is 6h. 

Pickering's Triangle in O-III light alone
Part of the Veil nebula supernova remnant in Cygnus

A colorized emission of ionized oxygen (O-III) of the Veil Nebula

A closeup
Click for a large photo

A horizontal version
(Click for a large photo, 1850x1000 pixels)

An older wide field photo of the veil nebula in O-III light
image is colorized

The area of  mosaic image is marked as a white rectangle, an apparent size of the full Moon as a scale.

Pickering's Triangle in mapped colors
An older photo from  2012

Image is in mapped colors from an emission of  the ionized elements. Golden areas 
are from emission of sulfur and hydrogen, bluish hues are from ionized oxygen.
Original blog post with the technical details can be seen HERE

An older wide field image of the Veil nebula
Image is in mapped colors from emission of ionized elements, H-a, S-II and O-III

More info and the technical details can be found from HERE

Technical details

Processing work flow
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Color combine in PS CS3
Levels and curves in PS CS3.

Imaging optics
Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope

Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x2
Astrodon filter, 3m O-III

Exposure times
O-III, 36 x 1200s = 12h, 6h for each panel.

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