Hello,
do I need to calibrate my images before opening them in CCDI2 ?
Pierre

Hi Pierre,

It's a good idea to do a dark subtraction on images that are analyzed in CCDI. A flat is not required.

You can certainly apply a dark before bringing the image into CCDI, or you can apply a scaled dark directly in CCDI by clicking on the "Reduce" check box. Then, select a dark frame, and/or a bias frame.

If you chose a bias and a dark frame, CCDI2 will automatically scale the dark frame to adjust for different length exposures of the images being analyzed.

Regards,

-Paul