Quote:
Originally Posted by Gastraea
Right so I didn't explain very well what I meant by stacking filters.
This is the way I see it. Currently I have an optilong L-enchance which has three narrow passbands. With the current DSLR it has an IR cut filter and then it has the RGB filters over different pixels in the bayer array. From a certain view point that is stacking three optical filters.
What I was looking to do was use the L-enchance to get the light pollution rejection and then the RGB filters, used one at a time, to isolate the three passbands individually and make up colour for the ASI2600MM
Anyway thanks all for your help. My main goal is to have something to play with and stagger the cost. My push to go for 2" filters is that who knows what the replacement for the ASI2600 will be. Full frame sensors may become cheap in the future.
|
Take a look at the RGB transmission graphs, you'll see the wavelengths of common light pollutants fall in the dips where the r, g and b overlap. In short, don't worry about stacking a light pollution filter onto broadband colour filters, they have you covered.