Celestron 8SE Dobstuff 13.1": Swayze refigured Coulter mirror, 6 pt mirror cell (2 pt edge support) and CF focuser board made by me StarBlast 4.5 ST80/PortaMount II Zhumell 20x80/Oberwerk 15x70 on a Seronik-style tripod boom mount Hubble Optics 18 inch F/4 mirror.
Quote:I'd be curious to know if you're utilizing the full aperture when not usung the OCS (if you do indeed do this.) I would guess that the limiting f/ratio would be nearer to f/5, or an effective aperture of about 11.5".
-DannyMy warehouseMy Channel
Johnny FS152 15" Obsession Classic w/ 14.5" f/4.65 Zambuto
Quote:Most people don't use the Paracorr with their binoviewers. It's really not necessary once you add an OCS and are viewing at 1.7X+. Even the B27 at 1.4X does well without it.
Quote:I probably would be using the Paracorr, at 1.15x, instead.
Quote: Quote:I probably would be using the Paracorr, at 1.15x, instead. how do you do that with the field stops more than 4" away? unless you buy two and put them after the bino?
Quote:Do some BVs handle steep light cones better than others?
CPC1100 w/ Denk S2 power switch (IVB).
Denk Binotron-27, 2x D21 eyepieces
TV 55mm Plossl AT 38mm Titan 8, 13, 17, 22mm AT AF70 eyepieces
iPad w/Skywire/Skysafari+ StarSense
NexStar 5SE w/associated goodies
80mm refractor & manual GEM
Quote:What 2" eyepieces will you be able to get your nose between?
Quote: Have you considered the extreme optical path a 2" binoviewer has? You'll need to move the primary several inches, and increase the size of your secondary to a size approaching that of a R-C to get adequate illumination.
Quote:Mind you I think a 2" binoviewer is very cool, but a 2" binoviewer has every problem a 1-¼" binoviewer does, and then a whole heap more.
16-, 10-, and 6-inch dobsonians, 6-inch achromat, 22X100 binoculars, 8.5X44 binoculars, Denk II binoviewer, 20mm Nagler Type 2.
Main Scopes :- Obsession 12.5 with AN, used with TV 12, 16 & 20mm NT2's. TV (Renaissance ) 101 on Gibralter mount with Skytour used with SM90 / BF10. Denk Standard with dual arm power switch, pairs of 40mm's, 32mm Plossls, Tak 32mm Orthos, 35 & 30mm Ultimas, 28mm RKE's, 25mm VT mm Orthos, , 18mm & 12.5mm BGO's. Borg 77 usually with Herschel Wedge and Nagler 7mm.