The Details
Object
Sharpless 2-101 and the Eta Cygni Region
Optics
Takahashi FCT-76 at f/4.5
Platform
Astro-Physics 1200 GTO
Camera
SBIG ST-10XME
Filters
Custom Scientific 3nm Hydrogen-Alpha
Date
18 July 2005
Location
Mount Wilson Observatory - Mount Wilson, CA
Exposure
Ha 6 x 1800 sec 1x1 bin
Software
Maxim DL/CCD, Registar, CCDSharp, Photoshop CS
Orientation
Field of View: 02°28’ x 01°39’ centered on RA 20h06m10s
DEC 35°19’49” (2000.0). North angle 31.08 °; east 90° CCW from north
Notes

This is truly a seldom imaged portion of the northern sky. At the time of this posting, an Internet search for images of this area of the heavens revealed a scant few offerings. Since there are so many more spectacular emission nebulae in the immediate vicinity, this area is likely passed over from consideration. TheSky software does not depict any nebulosity in this area and shows only open cluster NGC 6871. Yet, despite these facts, there are a number of objects to be discovered from a deep exposure here.

Besides the already-mentioned open cluster NGC 6871, also visible in the field of view are the rather obscure open clusters Bi 1 and Bi 2 (Biurakan), emission nebula Sharpless 2-101, as well as dark nebulae Barnard 146 and 147. Click on this Eta Cygni Region Map link to see the locations of these deep sky objects.

 

 

 

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