Okay, let's go through H-alpha first. I took two images as usual with my Borg 45ED II, Solarmax 40 with BF10:-
And after this usual image at solar minimum, I did a very strange experiment. Guess what, I replaced the Solarmax 40 with a ERF, and guess what, prominences still come out! That means the BF10 is indeed powerful and narrow enough for prominences! I didn't use my eye, I just used my camera. Take no risk, right?
1338 (GMT+8), less prominences could be shown despite to the wider bandpass:-
Then, I pulled out my Orion 100ED for some white light game with my Herschel wedge. One of the reasons that I bought this OTA is for white light imaging, I dreamed that solar maximum is coming and white light imaging will become interesting again... So, I did an experiment first. It wouldn't quite reach focus with the stocked 1.25" adapter, but I replaced it with a real low profile one and I got around 0.5cm to spare. Not bad. The view is impressive!!! No sunspot, but you could see some hint of detail across the disk!
Binoviewer couldn't reach focus, the Herschel wedge sucks up too much in-travel, and that 2.5x SCT corrector couldn't help in this case, despite it used to work with all my refractors. No, it works... I should have placed the corrector in the nosepiece of the Herschel wedge (hot!) rather than the nosepiece of the binoviewer. The view is nice! Now, I really want sunspots!