SBIG 403ME "B" filter and Tbv
I am geeting what seems to be a large deviation in Color Index Coefficient (Tbv) for my internal filter wheel in my SBIG 402ME: Tbv = 0.752. My Tvi seems OK (Tvi = 1.024). So, I am wondering if I have a bumb B filter. Anyone else run into this kind of Tbv with these filters?