Quote:i think Joe Ogiba can give you a answer to that, i think he used tape on the reg 1 1/4" eyepieces to make them wider. does anyone know if there is any similar 100mm model being sold in the US . john
Pentax PF-80ED,Meade 102ED APO,Orion EON 72,120ST Apex 127,C6 XLT,C6R,C9.25,XT10 ,Celestron Regal 100 F-ED, CT152 Zeiss 7x42 FL,Canon 10x42L IS WP,15x50 IS 12x36 IS II , Pentax 8x32 ED Garrett Optical 28x110 HD-WP Signature Series Oberwerk BT-80 45, Apogee RA-88-SA Denk II Power x Switch binoviewer w/13mm Ethos, 20mm Pentax XW's, 20mm Widescan III's. 21mm Ethos,17mm Ethos, 22mm Nagler, 40mm Pentax XW, 14mm Pentax XL, 5.2mm Pentax XL, 8-24mm Pentax XL Zoom, 31mm Axiom LX
Quote:I love your 30 minute mount, holder! That's fun!
Quote: There are plans for a more elaborate mount if all goes well.
Brian Even a broken clock is correct twice a day
Quote: The Orion 1.25" 20mm Expanse are the only ones I used with the RA-88-SA's and they work great with the barrels removed and some tape to snug them up in the oversize focusers.
Quote:Possible negatives requiring further research Mars was a little disappointing as it would not resolve to a sharp disk at 32x, about 30 degrees above the horizon. Did not expect 20x to work with my astigmatism, but although 32x was better expected more clarity. A stable mount and new glasses/contacts should reveal the source of the problem.
Quote:Quote: The Orion 1.25" 20mm Expanse are the only ones I used with the RA-88-SA's and they work great with the barrels removed and some tape to snug them up in the oversize focusers.Joe, if you don't mind me asking...I see you have both the RA-88's and BT-80/45s. Would you mind commenting on the relative merits of each?Thanks!Gary
Quote:Gary, I like them both because the 90° RA-88-SA's work better above 45° altitude and the BT80's are a little brighter and work with standard 1.25" eyepieces. Both have about the same contrast,sharpness and lack of false color in the 20-32x range with the BT80's being a little brighter. Joe
Quote:A quick price check at OP they are now listed at $629.99.The $500 price must have been a sale or is there a better price somewhere, someway?
Quote:I like the 90° idea as I don't want my neck to have to provide the extra 45° of a BT80 type design when working where the sky is darkest. I don't see why there aren't more astro binocs with the 90° configuration.
The night sky is the canvas....
My optics are the brush....
The Milky Way is the masterpiece
reductio ad absurdum of epistomology is solipsism....