Hi all,
I have obtained a ZWO 7 position 36mm EFW, however the filters were already installed and as they are 36mm frameless there is no writting or markings to tell which is which. Unfortunatley the previous owner can't tell me.
So my question is, is there anyway to tell which is which by looking at them, or will the imaging software (ATP, Deep Sky Stacker, Star Tools, Pixinsight etc etc) be able to tell me from a frame i.e. if I take one frame with one filter will the software be able to tell me that it was a red filter, or green etc, would the histogram give the detail by where the spike is.
