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Contains:  Double cluster, IC 1795, IC 1805, IC 1848, NGC 1027, NGC 744, NGC 869, NGC 884, NGC 896, NGC 957, The star 11Per, The star 1Per, The star 4Per, The star 63And, The star 64And, The star 65And, The star 7Per, The star 8Per, The star 9Per, The star ηPer
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Perseus double cluster, 



    
        

            Rich Bamford
Perseus double cluster
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Perseus double cluster

Technical card


Dates:Oct. 2, 2014

Frames:Hutech IDAS LPS D1 2": 90x60" ISO800

Integration: 1.5 hours

Darks: ~5

Flats: ~7

Bias: ~20

Avg. Moon age: 8.12 days

Avg. Moon phase: 57.78%


Basic astrometry details

Astrometry.net job: 477874

RA center: 2h 22' 22"

DEC center: +57° 43' 15"

Pixel scale: 7.937 arcsec/pixel

Orientation: 121.486 degrees

Field radius: 7.995 degrees


Resolution: 6036x4020

Locations: Home, Grantham, United Kingdom

Description

This was an experiment with IDAS filter fitted to front of 105mm lens on DSLR.
Turned out reasonably well with minimal vignet.
ISO800 f/6.3 60s best 90 subs
IDAS allowed much longer exp (normally only max 30s before LP swamps it) but perhaps try stopping down a little next time as subs were a little over exposed still.

Comments

Author

Myrialejean
Rich Bamford
License: None (All rights reserved)
1370
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Perseus double cluster, 



    
        

            Rich Bamford