By Mario Rana | 2024-05-22
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![Community photo entitled Hydrogen alpha filter image of sunspot groups AR3685 and AR3686 by David Hoskin on 05/22/2024 at Halifax, Nova Scotia, Canada](https://ecp.earthsky.org/upl/gravity_forms/6-d613a712aa1020729eb530187e1fe51d/2024/05/10_31_59_lapl3_ap145_Drizzle15-rs-cs-color-AR3686_3685.png)
Hydrogen alpha filter image of sunspot groups AR3685 and AR3686
On 05/22/2024 10:30 am by David Hoskin| Halifax, Nova Scotia, Canada
This active region of the Sun contains sunspot groups AR3685 and AR3686, as well as a number of filaments.
Lunt 40mm solar scope, GSO 2.5x Barlow, Player One Apollo-M Mini, SkyWatcher EQ6R Pro.
Best 125 frames out of 2500 frames of SER video stacked with AutoStakkert, wavelets with Registax, other post-processing with Photoshop and MS Photo.