|
Sil,
Thanks for the reply.
Adding filters etc. would not influence the absorption line in the spectrum.
(The bandwidth of the "resolution" is around 0.1A and the Ha line is around 3A wide....)
I'm not too worried about the over-exposed continuum except where it starts to impact of the width of the absorption line - as I expose further it records further down into the "core" but looses the local "wing" detail.
I have tried various ROI to improve things and find under FireCapture that the ROI (1928 x 100 pixel) gives good frame rates - up to 500 fps at 2 ms exposure. (On full frame 1936 x 1216 it seems to "default" to 70 fps)
Using SER and 16 bit settings doesn't seem to make much difference.
I don't do any processing other than cropping.
The individual frames (9000!) are extracted from the video file (28-30Gb)and then processed by either Spectral Line Merge (limited to 2Gb files) or BASS Project (limited to around 3Gb files)
|