Martin_S
17-07-2022, 03:01 PM
AR3055 is about to round the limb the Sun. Here's my best shot from a cloudy day. Imaged with my 100mm F10 Achromat, 2" 7nm H-alpha filter as a sub aperture ERF, 3x Telecentric Barlow, Combo Quark, 2" .5 focal reducer and ASI 174mm