Taking dark flats?
Posted: Mon Jan 28, 2019 6:54 pm
Hi Robin
I want to try out dark flats and I was wondering if this is possible? I would first figure out my flat time for e.g. 1 sec for my flats then cover the scope and use the dark capture to take 1 sec dark's for a master with the same brightness, gain and temperature as the flats . I would then load this SharpCap master dark in the pre-processing subtract dark section and leave the subtract flat section set to none. Next I would use capture flats feature and select mono, but since a flat dark replaces a bias in calibrating astro-images should I not select the bias feature or select it? I would then load this Sharpcap master flat/bias in the pre-processing subtract flat section and a master dark (with the same brightness, gain, duration and temperature as the light sub-images) in the pre-processing subtract dark section . * This would be my capture and calibration method for live stacking*.
Thank you for your feedback Robin
Chris A
Astrogate
I want to try out dark flats and I was wondering if this is possible? I would first figure out my flat time for e.g. 1 sec for my flats then cover the scope and use the dark capture to take 1 sec dark's for a master with the same brightness, gain and temperature as the flats . I would then load this SharpCap master dark in the pre-processing subtract dark section and leave the subtract flat section set to none. Next I would use capture flats feature and select mono, but since a flat dark replaces a bias in calibrating astro-images should I not select the bias feature or select it? I would then load this Sharpcap master flat/bias in the pre-processing subtract flat section and a master dark (with the same brightness, gain, duration and temperature as the light sub-images) in the pre-processing subtract dark section . * This would be my capture and calibration method for live stacking*.
Thank you for your feedback Robin
Chris A
Astrogate