Hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  M 92  ·  NGC 6341
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M 92 Globular Cluster, 



    
        

            Bob Gillette
M 92 Globular Cluster
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M 92 Globular Cluster

Getting plate-solving status, please wait...
M 92 Globular Cluster, 



    
        

            Bob Gillette
M 92 Globular Cluster
Powered byPixInsight

M 92 Globular Cluster

Imaging telescopes or lenses: Santel MK-91 Mak-Cass 230 mm f/13

Imaging cameras: QSI 683 wsg-8

Mounts: Astro-Physics AP 900 GTO

Guiding telescopes or lenses: Santel MK-91 Mak-Cass 230 mm f/13

Guiding cameras: Starlight Xpress Lodestar Autoguider X2

Focal reducers: Astro-Physics CCDT67

Software: Adobe Photoshop CS4  ·  Maxim DL5  ·  CCDStack 2+  ·  Software Bisque TheSky6

Filters: Astrodon LRGB Astrodon Gen2E LRGB Lum  ·  Astrodon LRGB CCD Gen II E-Series BLUE  ·  Astrodon LRGB CCD Gen II E-Series GREEN  ·  Astrodon LRGB CCD Gen II E-Series RED

Accessory: Spike-a Bahtinov Mask  ·  Technical Innovations RoboFocus


Dates:May 31, 2020June 12, 2020

Frames:
Astrodon LRGB Astrodon Gen2E LRGB Lum: 35x180" -20C bin 1x1
Astrodon LRGB CCD Gen II E-Series BLUE: 23x180" -20C bin 1x1
Astrodon LRGB CCD Gen II E-Series GREEN: 21x180" -20C bin 1x1
Astrodon LRGB CCD Gen II E-Series RED: 24x180" -20C bin 1x1

Integration: 5.2 hours

Avg. Moon age: 15.15 days

Avg. Moon phase: 61.38%


Astrometry.net job: 4083646

RA center: 17h 17' 6"

DEC center: +43° 8' 6"

Pixel scale: 0.539 arcsec/pixel

Orientation: 139.585 degrees

Field radius: 0.287 degrees


Resolution: 3096x2272

Locations: Roughacre Observatory, Ossipee, NH, United States

Data source: Backyard

Description

This was a first-light test of my treasured Ukrainian Santel MK-91 f/13 Mak-Cass, which I use for lunar and planetary imaging, with an Astro-Physics 0.67 reducer, so, in principle, to bring it to f/8.7 with a 2,000 mm focal length. Aim is to zoom in on smaller DSOs. So far so good, I think. As always, C&C welcome.

Data collected 31 May and 12 June 2020, now fully processed.

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M 92 Globular Cluster, 



    
        

            Bob Gillette