Garrett/Apogee/Pentax/Minolta/JCPenney/Tasco/Focal binos: 28x110/30x100/25x100/20x60/16x60/10x50/7x50/8x40/7x35 Orion 120mm f/8.3; Sears 80mm f/15; Jason 60mm f/15.2 Hardin Optical 10" f/5 Orion BV TAL 24mm; Meade 5K 24/18/14/4.7mm UWA & 40mm SWA; Celestron Axiom LX 31/Luminos 10mm; Agena UWA 30mm; EWA 6/9/15/20mm; 10-40mm Plössls; GSO 1.25/2" 2x barlows Sunpak 7500TM/Quickset Samson/Manfrotto 679/UA Millennium Unimount/HD Surveyor's tripod
Tele Vue Pronto, Teeter STS27 w/10" Royce conical mirror. EPs: Pentax, Russell Optics, WO, TV
The night sky is the canvas....
My optics are the brush....
The Milky Way is the masterpiece
reductio ad absurdum of epistomology is solipsism....
Binoculars: Miyauchi Saturn III - 33/39/50/71/150x100, WO 22x70ED, Fujinon 16x70 FMT-SX Pentax 10x50 PCF-V, 10x43 DCF-SP, 6.5x21 Papilio
Nikon 10x35 EII, 7x35 E, 8x30 EII, 8x23CF AS Diplomat
B&L 7x26 Custom
Scopes: C9.25, TMB130SS/FT, SV80S-LOMO 80/480
Quote:Looked through these at 2010 Okie-Tex SP.Unimpressed with optics and appeared to have the usual vignetting problems... ie effective aperture envy.
17.5" f4.1 Manual Discovery Split Tube Dobsonian (Love 100 AFOV and wide TFOVs).
Denk II Dual Power Switch 3x3=9 powers x3 OCS = 27 power options per eyepiece pair.
2.3x40 to 25x100 Binos (and many in between).
Quote:And the best part is that it is "perfectly Culminated!!"
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:Noticed the bidding stopped. Were they ever sold.
Quote:Bill,From earlier readings about the 45 degree version of these 6-inchers, I recall them as working at very near to full aperture. Your checking of vignetting when looking down the front end must be interpreted carefully, and done with an eyepiece in place, at focus. For one thing, you must completely disregard what's happening at the edge of the circle of light produced by the eyepiece; this means absolutely nothing as regards on-axis utilization of the objective aperture. Instead, you center some identifiable feature in the de-magnified image produced by the eyepiece. Then you find the point where that centered feature becomes clipped by an internal restrictor, checking where your sight line at that point intercepts the objective.With most any commercial bino, if you use clipping of the *outer* part of the eyepiece-formed image, it will give an indication of useable aoerture which is artificially reduced. And for those using interchangeable eyepieces, the wider field types will give a poorer (but false) impression than will the narrow field types.
.... back yard astronomer ================= Don't forget to look at the moon often. Its a play ground of fun if you throttle up the magnification!