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Contains:  IC 4665, IC4665
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IC 4665 - The Summer Beehive, 


            Michael Feigenbaum
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IC 4665 - The Summer Beehive

Technical card

Dates:June 8, 2019June 10, 2019

234x30" (gain: 139.00) -5C
Astronomik Blue 1.25": 64x120" (gain: 139.00) -10C
Astronomik Green 1.25" CCD Filter: 62x120" (gain: 139.00) -10C
Astronomik Red 1.25": 74x120" (gain: 139.00) -10C

Integration: 8.6 hours

Darks: ~50

Flats: ~50

Bias: ~162

Avg. Moon age: 6.58 days

Avg. Moon phase: 41.75%

Bortle Dark-Sky Scale: 4.00

Mean SQM: 20.95 job: 2739295

RA center: 17h 45' 38"

DEC center: +5° 40' 24"

Pixel scale: 0.974 arcsec/pixel

Orientation: 46.536 degrees

Field radius: 0.589 degrees

Resolution: 3424x2684

Locations: Papago Butte, near Maricopa, AZ, United States

Data source: Backyard


This cluster is located in Ophiuchus. This a very rich area of the galaxy, lots of dust and gas. This cluster is relatively you g with some members not yet on the HR main sequence yet!

This exercise was an attempt to improve my stars. I have done a lot of reading and received some good advice and I think this image may show some improvement in that area.



Michael Feigenbaum
License: None (All rights reserved)

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IC 4665 - The Summer Beehive, 


            Michael Feigenbaum