Newly computed master dark not compatible with lights?

[Terry Danks]

Hi:
I am using the new Batch Preprocessing script and getting a message that there is "No correlation between master dark and target frame" for about 5 out of 29 light frames. The master dark is newly computed by the script from the individual dark frames.

All lights and darks are taken with the cooler on my ST-8300M set to minus 25C and all are 10 minutes in length. Why the error message? What should I be looking for as a cause?

Thanks . . .

Terry Danks

[Geoff]

See this thread
http://pixinsight.com/forum/index.php?topic=4097.msg28438#msg28438

Geoff

[Terry Danks]

Thanks, Geoff. I don't understand all of the stuff in that thread but next time this happens I'll try unchecking the optimization box.