Hey guys. As the title states, I've got a question about my imaging train, specifically my barlow collection. About 20 years ago I bought the bulk of my eyepiece collection as well as 3 individual barlow lenses. I currently own an old style Televue 2.5x Powermate (single barrel) a 5x Televue Powermate (single barrel) and a Celestron 2x barlow.
Most years I've been imaging with the celestron barlow. My imaging train on my last outing was SCT>IR filter>ZWO ADC>Celestron barlow>ZWO224MC. I just saw a post today where an imager put the ADC right in front of the camera. When I tried doing that with my Powermates, the magnification got so large for the seeing (mushy images) that I felt I should step back to a 2x barlow rather than 2.5x. Not being able to unscrew the Powermate 2.5 means I can't put the adapter on it I currently own. I guess you can unscrew the new models and make it a shorter barrel.
With Mars approaching I'm willing to upgrade a few pieces of my system if it will help improve my mechanical setup. I can't do much about my local seeing, but I'd like to see if there's something I may be over looking to better my system. If what I have is sufficient but requires just reorienting individual pieces I'm fine with that too. Thanks in advance for your help.