IC 443 Won't Calculate an Exposure or SNR

[theskyhound]

Hello,

If you look on the left side of the dialog, under "Target Object data" you will see the following values: SBr(V) = 99.9, SBr® = 99.9, Total = 99.9. These values indicate that there is no data for this object. Unfortunately, not every object has the data required for the calculations. I am actively working on that, but its a big job, especially for a relatively faint emission line object such as this one.