As the title suggests, I'll give this a shot if it's possible otherwise I won't as there are inherent risks. There are 2 near-miss ISS solar transits coming up, one is a sun diameter from the sun and the other is even closer.
The upper one, this Saturday, is less risky as it's below the sun and hence there's no risk of normal "sideways" sun movement into my FOV. My modus operandi would be to
1. frame the transit path under the sun with the sun filter on, having first focused the sun as best as possible
2. slew down a sun diameter which is easy as the whole sun fits into my FOV with my 8SE - f/6.3 reducer - Canon EOS 600D combination
3. Set the exposure and ISO accordingly (and that's the problem....)
4. Remove the sun filter, take a few hundred frames
5. put the lens cap on
6. send the resulting frames to Astronomy Ireland magazine
The risks aside, would there be enough contrast against a blue sky (now that's wishful thinking) to detect the ISS at all? Or is there a filter that would help?
Any advice would be greatly appreciated. So would any reprimands, scorn, hilarity or bad puns (you know who you are).