Hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  M 92  ·  NGC 6341
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Globular cluster M92 (RGB), 


Globular cluster M92 (RGB)
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Globular cluster M92 (RGB)

Technical card

Imaging telescopes or lenses: Edge HD 1100

Imaging cameras: QSI 660 WS

Mounts: Software Bisque Paramount MX

Guiding telescopes or lenses: Edge HD 1100

Focal reducers: Celestron f/7 reducer for Edge 1100 HD

Software: GIMP  ·  Deep Sky Stacker  ·  Fitswork 4  ·  IrfanView  ·  Regim  ·  Astra Image 3.0  ·  Imagenomic LLC Noiseware

Filters: Astrodon LRGB 1.25" E series

Accessory: Innovations Foresight On-axis guider  ·  Starlight Xpress Lodestar X2

Dates:June 11, 2018

Frames:Astrodon 31mm LRGB E Series Gen 2 1.25": 93x60" -16C bin 1x1

Integration: 1.6 hours

Avg. Moon age: 26.90 days

Avg. Moon phase: 7.64%

Bortle Dark-Sky Scale: 4.00

Mean FWHM: 3.70

Basic astrometry details

Astrometry.net job: 2099129

RA center: 17h 17' 7"

DEC center: +43° 8' 2"

Pixel scale: 0.463 arcsec/pixel

Orientation: 161.110 degrees

Field radius: 0.227 degrees

Resolution: 2758x2208

Locations: Pittstown State Forest, Pittstown, NY, United States

Data source: Traveller


This image of M92 is the first I have been able to produce since September of 2017. Moving from Texas to New York last fall was very disruptive. It felt great to get my first imaging time in 9 months, even though I am presently limited to a site with moderate light pollution.

The seeing was really poor when I started shooting these subs, and though it improved towards the end, the wind started whipping around. The result is pretty good, considering the conditions.