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Hemisphere:  Northern  ·  Contains:  NGC 7822, NGC7822, Sh2-171
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Sh2-171 (NGC 7822), 


            Gary Lopez
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Sh2-171 (NGC 7822)

Imaging telescopes or lenses: Sky-Watcher Esprit 100ED

Imaging cameras: ZWO ASI1600MM Cooled PRO

Mounts: Orion Atlas EQ-G

Guiding cameras: Lacerta M-Gen II Autoguider

Software: Adobe Lightroom CC  ·  Photoshop CC  ·  Main Sequence Software Sequence Generator Pro, v3.0  ·  Pleaides PixInsight Core 1.8

Filters: Astrodon OIII 3nm-31mm  ·  Astrodon SII 3nm-31mm  ·  Astrodon Ha 3nm-31mm

Dates:Sept. 7, 2018Sept. 8, 2018Sept. 12, 2018Sept. 15, 2018Sept. 16, 2018

Astrodon Ha 3nm-31mm: 186x180" (gain: 139.00) -15C bin 1x1
Astrodon OIII 3nm-31mm: 137x180" (gain: 139.00) -15C bin 1x1
Astrodon SII 3nm-31mm: 138x180" (gain: 139.00) -15C bin 1x1

Integration: 23.1 hours

Darks: ~30

Bias: ~50

Avg. Moon age: 14.21 days

Avg. Moon phase: 20.10%

Bortle Dark-Sky Scale: 4.00 job: 2644630

RA center: 0h 3' 49"

DEC center: +67° 12' 13"

Pixel scale: 1.415 arcsec/pixel

Orientation: 69.286 degrees

Field radius: 0.776 degrees

Resolution: 3283x2189

Locations: Monterey Pines Observatory, Monterey, California, United States

Data source: Backyard


This is a reprocessing of data I collected in September 2018. In this version I used a different palette to reveal more detail, and cropped to alter the composition. The clouds and fog have been relentless in on the Northern California coast. Thank goodness I never delete any data so I can continue to feed my astrophotography obsession.



Gary Lopez
License: None (All rights reserved)

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Sh2-171 (NGC 7822), 


            Gary Lopez