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Re: Sun in H alpha this morning

September 17th 2021

As a follow up, I have gone back to the same underlying data and have processed them with a simulated occulting disk to reveal three of the prominences on view in H-alpha on 7th September at 12:17 BST. Solar disk has had same 195 degree rotation applied as in last week's image. Chris H On 07/09/2021 17:45, Chris Holt chris.holt@PROTECTED [Abingdon Astronomical Society Mailing List] wrote: From: ...Continue Reading