Contains:  Solar system body or event
Narrowband Ha (0.5nm) AR3780 2024/08/11, Ed Astle

Narrowband Ha (0.5nm) AR3780 2024/08/11

Acquisition type: Lucky imaging
Narrowband Ha (0.5nm) AR3780 2024/08/11, Ed Astle

Narrowband Ha (0.5nm) AR3780 2024/08/11

Acquisition type: Lucky imaging

Equipment

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Acquisition details

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Description

Edmund Optics 0.5nm (5Å) Ha filter on 150mm f/8 scope.
Far brighter than the Altair 2nm G-Band - just goes to show the abundance of overwhelming Ha 656nm on the Sun.
Any why expensive etalons are needed to get you down to 0.7Å (not 0.7nm!) for "proper gassy Ha imaging".

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Histogram

Narrowband Ha (0.5nm) AR3780 2024/08/11, Ed Astle