Solar Ha 20240406

Lunt 50 with ASI183MM (3ms @ gain 0), cropped. Had issue earlier where couldn’t reach focus with 183 screwed into m42 at end of 1.25” eyepiece holder (not enough in-focus) so had temporarily using 174 mini in eyepiece holder. For 183 needed to remove 1.25” eyepiece holder, and use 10mm m42 extension directly to base m42 on B600. Then screwed on 183 with its 11mm ring. Focus was achieved at around mid-span on helical (at 10.1 position).