Yes, these eyepieces can be used as 1,25" eypieces and should work fine with your telescope at magnifications of 62x and 187x.
There may only be one problem: If the clamping screw of the star diagonal is higher that the top of the star diagonal, the eyepieces will sit on the screw. You can still use and securely clamp them (you don't need to insert them completey), but the body of the eyepiece may be scratched. If the screw is below the top of the star diagonal, there is no problem. You might also use something like Stop Ring 1¼" (T-2 part #30) # 1905131 (or a 3D-printed ring) as spacer, if that is a problem with your star diagonal.
Answer by: Baader Web Team (Admin) on Sep 28, 2022 2:02:00 PM
I would like to know the clear aperture of this Barlow.
Additionally, if the sleeve containing the Barlow lens is used in place of the T2/1.25" nose piece of a MaxbrightII binoviewer, would this cause vignetting as the clear aperture of this Barlow looks small?
The clear aperture is 18.5mm - although this is smaller than our glasspath correctors, Zeiss designed the Barlow in such a way that no lager lenses are necessary at magnifications of 2x or higher. The light widens after the lens element is thus sigificantly larger at the distance where it delivers 2x magnification (at the top of the 1,25" ClickLock eyepiece clamp).
If you search through cloudynights.com for Zeiss Abbe Barlow, you'll find some threads about, even with the use of the Mark V binoviewer (which has got larger prisms than the MaxBright). It can be done, but the magnification will be at about 3.6x (according to the thread on CloudyNights, we haven't measured it).
But please note that although a glasspath corrector is similar to a Barlow lens, its design is slightly different toin order to compensate for the color aberrations which may be caused by the prisms of the binoviewer at faster f/ratios. Especially if you don't need so high magnifications, we'd recommend to give a regular glasspath corrector a try.
Answer by: Baader Web Team (Admin) on Sep 28, 2022 1:32:00 PM
I am going to place an order for the Baader MaxBright® II Binoviewer and I would like to know if I should change my Baader Prisme Diagonal T-2/90° 32mm (# 2456005) ? Which diagonal prism to order ?
It is to mount on a celestron 8 telescope and 120ED. Thank you ;)
As you don't have extremely fast telescopes and thus only a rather narrowbe am of light, the 32mm-prism should be sufficient and not cause any vignetting.
The alternative to the 32mm-prism would be the Baader T-2 Stardiagonal (Zeiss) Prism with BBHS ® coating (T-2 part #01B) # 2456095 with 36mm prisms, which we recommend for the larger Mark V (Giant) bino-viewer, because that binoviewer has got larger prisms than the Maxbright II. But with your telescopes and the MaxBright II, the smaller 32mm-prism should be fine.
Answer by: Baader Web Team (Admin) on Sep 26, 2022 10:44:00 AM
For my celestron SCT XLT C8 I'd like to have a focuser near to the eyepiece, a more solid and versatile "back" for installing DSLR/planetary camera and a more quick and confortable changing eyepieces system. Well I thougt to use the Baader T Adapter (BTA) for SC (# 2408160), Baader Prism Diagonal T-2/90° 32mm (# 2456005) and this Baader ClickLock Eyepiece Clamp 1¼".
Those are enough or I missed any pieces?
This will work for fine focus for visual use. Focus is adjusted by rotating the upper ring, this gives you 6mm of travel.
For photography, you may want to consider the back focus distance of your telescope: https://www.celestron.com/blogs/knowledgebase/what-are-the-optimum-back-focus-distances-for-celestron-scts
So you may want to use some T-2-extensions for a DSLR.
Anyway, for focusing a DSLR, you should better use a large focuser like the 2" BDS-SC Baader Diamond Steeltrack® Focuser # 2957220. A 1.25" focuser will cause vignetting with the large sensor of a DSLR, as 1.25" is smaller than the sensor of a DSLR. We do not recommend a 1.25"-connection for a DSLR. (Bonus: You cn attach a motor focusser to the Steeltrack, which ist great when you are working a camera and a computer)
Answer by: Baader Web Team (Admin) on Sep 26, 2022 3:07:00 PM
I will be getting a Celestron EDGEHD 8 and its reducer. I will be using a Canon RP with the 34.5mm T fitting. I plan on having a custom 50mm plus T threads adapter made. Do I need to have it made shorter or is 50mm correct?
The EdgeHD800-reducer is made for a backfocus of 105mm.
You need this distance for the complete setup, including the back focus of you camera, all adapters and the length of a ClickLock, if you use it behind the reducer. The #2956220 SC / HD (2")-Clicklock (5" SC, 6" SC/HD, 8" SC/HD and 9¼" SC) has got a length of 47mm.
Answer by: Baader Web Team (Admin) on Sep 23, 2022 2:59:00 PM
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