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Contains:  NGC 6356, NGC6356
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NGC 6356, 


            Gary Imm
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NGC 6356

Technical card

Dates:Sept. 30, 2019Oct. 1, 2019

Astrodon Blue 31mm Gen2 I-Series: 20x120" (gain: 111.00) -12C bin 1x1
Astrodon Green 31mm Gen2 I-Series: 20x120" (gain: 111.00) -12C bin 1x1
Astrodon Lum 31mm Gen2 I-Series: 40x120" (gain: 111.00) -12C bin 1x1
Astrodon Red 31mm Gen2 I-Series: 20x120" (gain: 111.00) -12C bin 1x1

Integration: 3.3 hours

Avg. Moon age: 2.56 days

Avg. Moon phase: 7.51% job: 2985646

RA center: 17h 23' 35"

DEC center: -17° 48' 44"

Pixel scale: 0.494 arcsec/pixel

Orientation: 111.369 degrees

Field radius: 0.321 degrees

Resolution: 3809x2720

Locations: Backyard (Mag 20.8 - New Moon), Onalaska, Texas, United States

Data source: Backyard


This object is a rarely imaged globular cluster located 50,000 light years away in the constellation of Ophiuchus at a declination of -18 degrees. The cluster spans 10 arc-minutes in our apparent view, which corresponds to a diameter of 150 light years.

This cluster is located only 1.5 degrees from the more celebrated (and 0.5 magnitude brighter) cluster M9. This cluster is twice as far away as M9, located on the other side of the Milky Way. Because of the large distance, the cluster brightness is decreased (reddened) by 0.2 magnitudes. It is surprising to me that most of the cluster stars are able to be resolved at this distance and low latitude.



Gary Imm
License: None (All rights reserved)

Sky plot

Sky plot


NGC 6356, 


            Gary Imm