ADAM replied to the topic 'can't take short exposure with SX-694' in the forum. 7 years ago

My raw images taken in SII with an exposure time of 60 "have a very low signal. When I calibrated them with my old master bias the result was catastrophic.
Indeed I had made this one with INDI but in LIGHT mode and not BIAS. Result, even with an exposure time of 0.001 secs, in reality the exposure was of the order of 1 sec.

I have just done a bias, but in BIAS mode, and this time actually no matter how long it takes, I see in the FITS header a duration of 0.0001 sec.
So I have calibrated my images again with this new bias, and this time I have a correct result.

The error came from the fact that I had forgotten to check the box BIAS :)

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