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The Details
Object
NGC 6992 & 6995 Network Nebula portion of Veil Nebula in Cygnus
Optics
Astro-Physics 12" Mak-Cass f/8
Platform
Astro-Physics 1600 Mount with absolute encoders
Camera
FLI 16803 Proline CCD
Filters
Tru-Balance 5 nm H Alpha Filter
Date
01/04/05/06/11 October 2015
Location
Las Campanas Observatory, Chile
Exposure
Ha 2 x 17 x 1200 sec, 1x1 bin
Software
ACP, Maxim DL/CCD, , CCDStack 2, Photoshop CS5
Orientation
Field of View: 01°22’ x 48’ centered on RA 20h56m38s
DEC+31°24’16” (2000). North angle 89.5 °; east 90° CCW from north
Notes
The Network Nebula consists of NGC 6992 and NGC 6995. It is the easternmost portion of the Veil Nebula complex. In the above image NGC 6992 runs horizontally in a sweeping arc along the upper end of the frame, while NGC 6995 is the thicker, bright extension on the lower left side of the arc. This beautiful display of intertwining strands and folds of gas were formed over 5,000 years ago by a supernova explosion.

The Veil SNR is a difficult object to image from the southerly latitude of Las Campanas, Chile.  At transit it rises to a maximum altitude of only 29°, with many individual frames of this image taken at altitudes down to 20° (3 air masses) over several nights, attesting to the fine seeing conditions at the observatory.
 
This two-pane mosaic is the culmination of 11.5 hours of data collection in a collaborative effort between Howard Hedlund of Astro-Physics Inc. and Dave Jurasevich.

 

 

 

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No reproduction of these images are permitted without prior approval of the author.