Hi all,
After being cloudy for the most of the day it cleared just long enough in the afternoon to grab a few shots. It was quite humid and hazy, but the seeing was good.
FD image in H-Alpha using the Takahashi Sky-90II with Coronado 90mm/BF15, Coronado 2x CeMax and ASI 1600mm PRO.
Full size image
FD image in CaK using William Optics ZenithStar 61II stopped down to 46mm, Lunt Cak 1200 module and ASI 178mm camera.
Full size image
Full size image
Best regards,
Arne
Sun FD in H-Alpha and CaK 19th of June 2021
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Re: Sun FD in H-Alpha and CaK 19th of June 2021
Hi Arne
Very nice and contrasting FD. Are granules visible in the full-size picture (in the calcium line)?
Ivan
Very nice and contrasting FD. Are granules visible in the full-size picture (in the calcium line)?
Ivan
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Re: Sun FD in H-Alpha and CaK 19th of June 2021
Thank you Ivan and Franco.
Ivan: I don't think so. I'm not sure if the resolution is to low or if they are visible at all in CaK. Maybe someone else knows this better.
Best regards,
Arne
Ivan: I don't think so. I'm not sure if the resolution is to low or if they are visible at all in CaK. Maybe someone else knows this better.
Best regards,
Arne
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Re: Sun FD in H-Alpha and CaK 19th of June 2021
Nice shots Arne! I can just about make out inverse granulation at 40mm when seeing and sampling are absolutely optimal. It's easier at 60mm though. (not 60mm f6 though - try 60mm f16!)
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
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