With a forecast of cloudy skies and scattered thunderstorms for the upcoming Solar eclipse, what are the chances of being able to do Solar imaging through rainclouds at Sunrise?
I tried to do Solar imaging in the rain the other day, and while it did work out (somewhat), it was extremely difficult. That was in the afternoon though, whereas when I tried photographing Sunrise under cloudy skies, I couldn't get anything. I couldn't see the Sun, so tried photographing blindly at about 2X (55 mm f/4.0 with Canon APS-C) but still couldn't get a Solar disc through the clouds, even an hour after Sunrise.
Just a reminder, but I would not consider it safe to use either a Solar film filter or a telescope in the rain. I was using a threaded-on glass ND100000 filter on a 55-250 zoom telephoto lens with a lens hood and a rainguard. Note that the Solar altitude angle needs to be low enough to avoid getting rainfall on the glass filter.
Finding the Sun under thick clouds without GOTO though is very difficult. I tried using Celestron SkyPortal for Android but it didn't help much. Also, my compass does not work inside the car. I couldn't find the Sun at all at Sunrise under heavy clouds.
The second-biggest difficulty is focusing. If you can't see the Sun, you either need to manually focus the lens on the horizon before adding the ND100000 filter (and remember not to touch the focus ring when you add the filter) or focus on the horizon by trial and error (which loses imaging time).
Edited by Nicole Sharp, 05 June 2021 - 11:35 AM.