Guy's my recent MiniSHG CaK image showing the filaments won SPOD on the Solar chat forum.
https://www.iceinspace.com.au/forum/...d.php?t=195303
It's good but it's spoiled by the parasitic light - looks like viewing through a veil....
I thought about adding a Blue (or maybe a Baader UV Venus filter) but the cropped bandwidth for the SER is only 150 pixel or so (150 x 0.065= 10 A)
I'm looking to borrow a filter (1.25" or 2") which passes around the 390nm and block visible beyond (I already use the Astronomik UV-IR to block below 390nm and above 700nm). Just needed for a day or some - when we have some sunshine
Can you help? Let me know.
Ken
