Accumulator camera to capture lightning

[omeganon]

We've been seeing a lot of storms lately with a ton of lightning, but the majority of images are over exposed due to the way exposure times are calculated. I was thinking that maybe the accumulator driver could be interesting here.

After each sub-exposure, is the current sum of the sub exposures compared against the target ADU and further images aborted if so? If that's the case, then I could determine a generally OK ADU for lightning shots that are most likely to be above me than at the horizon.

Looking at the code, it doesn't seem like it operates like that, instead just performing sub exposures up to the max exposure time. Is my reading correct?

[aaronwmorris]

Your reading is correct. There is no mechanism to feedback the current ADU/average to the exposure algorithm. A bunch of other things would not work exactly right by trying to stop a frame before it is supposed to be complete.

[omeganon]

Understood. Thanks!