I had a short break in clouds last night – 31st (before torrential rain and storms), and made a visual estimate of 10.2 with a 22cm. Might not be my best estimate, as struggling with Covid – and feeling pretty sorry for myself.
Strengthening H alpha relative to the continuum. Here is the line profile tonight at high resolution R~1500 (LHIRES III, 2400l/mm grating) in radial velocity
This reply was modified 8 hours, 14 minutes ago by Robin Leadbeater.