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Contains:  IC 342, IC 1848, NGC 1027, IC 1805, IC 1795, NGC 896, NGC 884, Double cluster, NGC 869, The star 4Per, The star ωCas, The star 65And, The star ψCas, The star ιCas, The star ιPer, The star τPer, The star ηPer, The star εCas, The star γPer, Part of the constellation Perseus (Per)
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Heart & Soul Nebulae / Persei Cluster (50mm), 





    
        

            star-watcher.ch
Heart & Soul Nebulae / Persei Cluster (50mm)

Heart & Soul Nebulae / Persei Cluster (50mm)

Technical card

Resolution: 4394x2934

Dates:Aug. 14, 2016

Frames:Astronomik CLS Canon EOS Clip: 13x360" ISO1600

Integration: 1.3 hours

Darks: ~21

Bias: ~37

Avg. Moon age: 10.81 days

Avg. Moon phase: 83.34%

Bortle Dark-Sky Scale: 6.00

Temperature: 15.00

Astrometry.net job: 1296628

RA center: 39.043 degrees

DEC center: 59.496 degrees

Pixel scale: 16.429 arcsec/pixel

Orientation: -90.290 degrees

Field radius: 12.056 degrees

Locations: Derendingen 454m, Solothurn, SO, Switzerland

Description

50mm @ f/5.6

I wanted to find out the best f-value for the Canon EF 50mm f/1.4 and how far I can go with the
exposure time.
My previous 2 images taken with this lens at f/2 showed much coma/distortion especially in the corners. Also the CAs were very strong:

So, the CA's are still visible until f/4.5. At f/5.0 they're almost gone. Stopped down to f/5.6, and everything is perfect. No distortion, no CA's and no vignetting.

360 seconds, on every sub pin point stars :-) But very noisy darks...

See my 280mm image of the Soul Nebula IC 1848 here.

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Author

star-watcher.ch
star-watcher.ch
License: None (All rights reserved)
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  • Heart & Soul Nebulae / Persei Cluster (50mm), 





    
        

            star-watcher.ch
    Original
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    Heart & Soul Nebulae / Persei Cluster (50mm), 





    
        

            star-watcher.ch
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Heart & Soul Nebulae / Persei Cluster (50mm), 





    
        

            star-watcher.ch

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