Johnny FS152 15" Obsession Classic w/ 14.5" f/4.65 Zambuto
Quote:It's a foggynight here in Los Angeles, and I've been experimenting with my T-2 system with the Mark V binoviewers. Has anyone tried this particular configuration? That's a 2x Powermate with the body removed and a T-ring Adapter in place. I then screwed the Powermate T-ring directly into the Baader T-2 prism diagonal in place of the nosepiece.(The three silicon o-rings on the barrel are spacers I use since the Powermate has an extra-long barrel that tends to bottom out in diagonals.)
Dave JessieOutreach Events
Quote:Unlike a traditional barlow, I believe the Powermate is supposed to maintain the same magnification factor regardless of the distance from the eyepiece Dave, due to the telecentricity and the parellel light cone.
Quote:Yes I believe it should work fine Dave, I have never tried it. It's longer than the 2X although with the T-ring adapter I assume it would be a lot shorter than without. It may require a bit more outfocus, I am not sure. Another solution is to get the AP Barcon and screw the barlow element onto the front of the diagonal nose, and use a 1.25X gpc for 3X power or a 1.7X for around 4X? This will definitely require more outfocus than a 4X Powermate though.
"Life is too short to miss the beauty of heavens."
Sean Celestron 9.25 EdgeHD CGEM TMB-92L AVX Nikon D90/ Canon T2i Entropy is not chaotic but is rather an expression of organisation, just look up to the heavens above. Onward and upward - astroboy
Quote:Using your FS-152, did you try if this setup comes to focus without any GPC in the Mark V bino, and if yes, how much focuser inward travel remains until fully racked-in position?