Quote:Contact Harry Siebert and Siebert Optics. He will have one for you.
Quote:You can use a Peterson visual back on a Celestron 11", 14". I do not know if the 8" can use one. Yes, you can use a 2" screw on diagonal with the binoviewer with no problem at all.
Quote:I will have a C9.25. will using the eye opener improve contrast with the bigger app when using the BV? I remember using one on my meade 10" and the difference was slight but it was there.
Dave JessieOutreach Events
Quote:Quote:I will have a C9.25. will using the eye opener improve contrast with the bigger app when using the BV? I remember using one on my meade 10" and the difference was slight but it was there. I hate to burst your bubble, but the Celestron 9.25" doesn't have the 3.25" threaded back that the Peterson "Eye Opener" attaches to... you have to go to a C-11 for those 3.25" threads. Adding to the annoyances, the 3.25" back on the Celestrons that have them is not the same threads as the 3.25" back on the 10" and larger Meades. It's a laugh a minute, isn't it?
SyedTeeter STS 11 f/4.3 Zambuto | XT8i | XT8g | XLT 150 | C90 | EON 80mmAT Voyager and Nexstar SLT mountsEyepieces: Mostly TeleVue and PentaxDenk II BV'er, Earthwin PFS-SE, Pentax 10x50 PCF WP II
Whenever I have come into large sums of money in my life, I always put half of it aside to spend on fast cars and the pursuit of loose women.
I put aside the other half to spend frivolously.
Quote:It is probably reducing the aperture to something like 6", but if you can see stars, I guess it works.Again, you are likley using a 6" or 6.5% scope with a 42% obstruction, but hey, that only matters if it matters to you.
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:After some indoor testing, focusing on objects about 25 feet away, I am happy to report that my f/6.3 focal reducer works on my 8SE. This is with my WO screw-on diagonal and Denk II's using TV Plossl 32's and Vixen LVW 22's. Have others had similar experience? Can I expect it to work without issues during night time observing?