White balance and master darks
Posted: Sat Oct 26, 2019 7:10 pm
With my ZWO 385MC and my 1600MC-Cool cameras I have always used 50/50 for R and B (under Image Controls) when creating my master darks in SharpCap. However, my live stacked images always had a greenish cast to them that I could not balance out using the live stacking color sliders. When I create my master darks using the same color balance as my light frames, the greenish cast was not present and I get a better white balance during live stacking.
https://www.astrobin.com/aitf98/B/?nc=c ... n&nce=1157
https://www.astrobin.com/407388/?nc=collection&nce=1155 (scroll down to see the description)
This is not camera specific or filter specific since I’ve seen the green cast with both cameras and using different filters using different scopes. I can only conclude that it must be something going on in SharpCap but I’ve no idea what it is. I just know that I get better results when my master dark has the same R and B values as my lights.
Robin: can you shed some light on what is going on? Thanks!
https://www.astrobin.com/aitf98/B/?nc=c ... n&nce=1157
https://www.astrobin.com/407388/?nc=collection&nce=1155 (scroll down to see the description)
This is not camera specific or filter specific since I’ve seen the green cast with both cameras and using different filters using different scopes. I can only conclude that it must be something going on in SharpCap but I’ve no idea what it is. I just know that I get better results when my master dark has the same R and B values as my lights.
Robin: can you shed some light on what is going on? Thanks!