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Friday, September 30, 2016

First light for the Autumn season 2016, Eastern part of the Veil nebula supernova remnant.

This is an opening shot for the Spring season 2016, it's good to be back again!
This time I shot a two frame mosaic out of the Eastern part of the Veil Nebula SNR. This image shows well the complex nature of the shock front sourced by an exploded star, a supernova.
Total exposure time from several nights is around 15 hours.

A two panel mosaic of the Eastern Veil Nebula
Please, click for a full size photo, 1850 x 1200 pixels

Image is in mapped colors, from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.

A closeup
Please, click for a full size photo, 1850 x 1200 pixels

Please, click for a full size photo

Area of interest is marked as a white rectangle


 Eastern Veil is a part of theVeil Nebula supernova remnant at constellation Cygnus.
Veil Nebula is a cloud of ionized gas and dust, leftovers from an exploded star. The star went off some 5000-8000 years ago at distance of about 1470 light years. The whole Veil Nebula is a relatively faint target and difficult to image due to the large angular diameter, about three degrees, and a dense star field.

Eastern Veil in visual colours
Please, click for a full size photo

Image is in Natural color palette from the emission of ionized elements, 
R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.

Technical details

Processing work flow

Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 25% weight
Color combine in PS CS3
Levels and curves in PS CS3.

Imaging optics
Celestron Edge HD 1100 @ f10 with 0,7 focal reducer for Edge HD 1100 telescope

10-micron 1000

Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x2 and SXV-AOL

Astrodon filter, 5nm H-alpha
Astrodon filter, 3nm O-III
Astrodon filter, 3nm S-II

Exposure times
H-alpha, 9x 1200s = 6h (3h per panel)
O-III, 3 x 1200s binned = 6h (3h per panel)
S-II,  3 x 1200s binned = 3h (1.5h per panel)
Total 15h

Color channels used for the final image 
Please, click for a full size photo

A single uncropped, calibrated and stretched 20 min. H-alpha frame as it comes from the camera

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