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Contains:  NGC 7023
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Iris Nebula -  C4  - NGC 7023, 


            Scott Alber
Iris Nebula -  C4  - NGC 7023

Iris Nebula - C4 - NGC 7023

Technical card

Resolution: 2840x1888

Dates:Sept. 4, 2018

Frames: 121x60" (gain: 250.00) 12C bin 1x1

Integration: 2.0 hours

Darks: ~30

Avg. Moon age: 23.61 days

Avg. Moon phase: 34.65%

Bortle Dark-Sky Scale: 5.00

Temperature: 23.00 job: 2241973

RA center: 315.400 degrees

DEC center: 68.163 degrees

Pixel scale: 0.989 arcsec/pixel

Orientation: 3.065 degrees

Field radius: 0.468 degrees

Locations: BackYard, Bloomington, Indiana, United States

Data source: Backyard


I was surprised this came out as well as it did on a night with 90% humidity. I battle severe amp glow with the ZWO 178 mc camera but have had some good results in Sharpcap by setting red and blue gain to 50 for both imaging and recording darks.



Scott Alber
License: None (All rights reserved)

Sky plot

Sky plot


Iris Nebula -  C4  - NGC 7023, 


            Scott Alber