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Contains:  Witch Head nebula, IC 2118, The star 68Eri, The star 66Eri, The star ψEri, The star 64Eri, The star ιLep, The star ωEri, The star λEri, The star τOri, The star Cursa (βEri), The star Rigel (βOri), Part of the constellation Eridanus (Eri)
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Witch Head Nebula, 





    
        

            Martin Palenik
Witch Head Nebula

Witch Head Nebula

Technical card

Resolution: 5968x3986

Dates:Feb. 18, 2017

Frames: 50x140"

Integration: 1.9 hours

Avg. Moon age: 21.86 days

Avg. Moon phase: 53.03%

Astrometry.net job: 1668217

RA center: 77.056 degrees

DEC center: -7.816 degrees

Pixel scale: 6.188 arcsec/pixel

Orientation: 73.333 degrees

Field radius: 6.168 degrees

Locations: Binbrook Conservation, Hamilton, Ontario, Canada

Description

Taken last winter, I forgot to post this image. Looking back, we had a nice weather spell in February.

When I first took it I was fighting the issues I discovered with Nikons using low ISO and fast lenses (f/2 - 200 ISO) and had a tough time correcting it and somehow forgot to post it.

I really like this lens now and now that I've found you can solve the issues by using a higher ISO so I am happy I kept it. Sort of a reverse of what I was doing. The issue was extreme rings that cannot be easily calibrated/corrected. For this image I used different ISO flats to solve it but it did some damage that I was able to somehow correct. Shooting at F/2 is very sensitive to calibrations.

Comments

Author

entilza
Martin Palenik
License: None (All rights reserved)
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Witch Head Nebula, 





    
        

            Martin Palenik

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