By Marcella Giulia Pace | 2023-09-21
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On 09/22/2023 11:10 am by David Hoskin| Halifax, Nova Scotia, Canada
Broadband (left) and hydrogen-alpha (right) filtered images of sunspot group AR3435, which unleashed a very strong M8 class solar flare on 20 September 2023.
For broadband: Celestron NexStar Alt-Az mount, Celestron 102mm f6.5 refractor, APM Herschell wedge, GSO 2.5X Barlow, Player One Apollo-M Mini camera with UV/IR cut and Green 58A filters.
For hydrogen-alpha: Celestron NexStar Alt-Az mount, Lunt 50mm solar telescope, GSO 2.5X Barlow, Player One Apollo-M Mini camera.
AutoStakkert, Registax, Photoshop, MS Photo.
