AR2713 and prominences in H alpha
Taken by James Roger Samworth on July 14, 2018 @
Nailstone, Nuneaton, UK
Click photo for larger image
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: 2018:07:14 10:43:48
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Details:
AR2713 is ideally placed on the solar meridian.It is unusual in that there is virtually nothing visible in white light. I wonder if there is anything there in any of the Calcium bands?
Lunt LS35THa + Bresser Mikrokular
+ X2 barlow for details, + focal reducer for disc.
Image flipped and rotated to match solar image on homepage.
Taken from indoors window-sill
Each image a stack of a 200 frame avi, processed with Registax 6 and GIMP 2.10
Photographer's website:
http://https://roslistonastronomy.uk/category/contributor/roger-samworth
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