Do you need an Atmospheric Dispersion Corrector (ADC) For Planetary imaging? 

Thanks Chris.

I'd like to see this test (both scopes on the same night) done again, although I also understand how much of an undertaking setting two rigs up together or back-to-back is 😂 I'm a huge fan of these FCD100 & La doublets, but the vast majority of what I do is visual observing with them so I can't help much with the imaging side.

thank you sir