Hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  NGC 6032  ·  NGC 6035  ·  NGC 6060  ·  Sh2-73
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Sh2-73, 



    
        

            Steed Yu
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Sh2-73

Getting plate-solving status, please wait...
Sh2-73, 



    
        

            Steed Yu
Powered byPixInsight

Sh2-73

Imaging Telescopes Or Lenses
SharpStar 15028HNT
Imaging Cameras
QHYCCD QHY268C
Mounts
iOptron CEM 60
Filters
Optolong 2" UV/IR Cut
Software
Pleiades Astrophoto S.L. PixInsight 1.8.8 Ripley · Adobe Photoshop 2020 · Astro Photography Tool - APT APT - Astro Photography Tool v3.63
Guiding Telescopes Or Lenses
QHYCCD QHYmini Guide Scope
Guiding Cameras
QHY5L-II-M

Acquisition details

Dates:
April 24, 2020 ·  April 28, 2020 ·  April 29, 2020
Frames:
Optolong 2" UV/IR Cut: 19x300" (1h 35') (gain: 30.00) -15C bin 1x1
Optolong 2" UV/IR Cut: 31x300" (2h 35') (gain: 30.00) -20C bin 1x1
Integration:
4h 10'
Darks:
200
Flats:
50
Flat darks:
50
Bias:
50
Avg. Moon age:
4.10 days
Avg. Moon phase:
21.16%
Bortle Dark-Sky Scale:
3.00

RA center: 16h09m38s.89

DEC center: +21°4215.1

Pixel scale: 1.854 arcsec/pixel

Orientation: 0.080 degrees

Field radius: 1.912 degrees

More info:Open 

Resolution: 6183x4107

Locations: qingshui, Beijing, BeiJing, China

Data source: Traveller

Description

Sh2-73 is a visible reflection nebula in the constellation of Hercules. It was mistakenly included in the Sharpless catalog as an emission nebula. We now know that the nebula is simply a molecular cloud. With its relatively high galactic latitude, about 45°, the integrated light of the galaxy illuminates the nebula. Therefore, we can refer to Sh 2-73 as an integrated flux nebula, as defined by Steve Mandel.

Sh2-73 is one of the closest clouds to the solar system, being just 200 parsecs away (about 650 light-years); it is located at a very high galactic latitude and does not appear associated with any bright star, nor are star-forming phenomena active in it.

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