Taken by john hicks on August 20, 2017 @
Private Solar Observatory, Lake Simcoe ONT
Click photo for larger image
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: 2020:11:28 17:06:03
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Details:
This "Filtergram" was taken through a converted Meade 102ED refractor fitted internally with a Lunt 60 mm H-alpha etalon. The conversion required machining a custom
barrel to close tolerances to
refocus the Lunt image. It was
entirely successful capturing a sunspot area in very high
detail. I was amazed at what I had created easily matching the resolution of the Lunt 4" stock H-alpha scope
Photographer's website:
https://no but plenty of H alpha imnagers
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