Thread: sunspot groups from 18 july 2021
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Old 19-07-2021, 06:40 AM
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Merlin66 (Ken)
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Merlin66 is offline 		 
Join Date: Oct 2005
Location: Junortoun Vic
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David,
The images look good.
For a full disk image, why not compromise.
Change the effective focal length to suit your sensor chip,size.
The solar diameter is close to 1/100 the focal length.
Just my 2c
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