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If you do not use a binoviewer, we'd recommend either a mirror diagonal like
Baader 2" BBHS ® Mirror Diagonal with 2" ClickLock Clamp # 2456115
Baader 2" ClickLock Diagonal Mirror # 2956100
Baader Zenith Prism Diagonal T-2/90 ° with 32mm Prism (T-2 part #14) # 2456005K (for binoviewers or if you only use 1.25" eyepieces)
for astronomical observations or one of these amicis for terrestrial observations:
Baader 2" Amici-erecting-prism 90° with 2" holder and 2" sleeve # 2956152 (also for high magnifications)
Baader1¼" Amici-erecting-prism 45° with 24mm free aperture # 2956150 (only for terrestrial observations, only 1.25")
You can find more about our star diagonals (and why we have so many) in this PDF:
You may need a reducer from 2" to 1.25", as barlow-lenses are usually made for 1.25"-eyepieces, if you don't already have one:
We offer these Barlow lenses:
The Hyperion Barlow is meant to work best together with the Hyperion Zoom, Q-Barlow and VIP-barlow are good regular barlows, and both FFC and Abbe barlow are high-end. They can be inserted into a 1.25" clamp; only the FFC is a little bit more complicated as it was made also for large-format cameras.
The Amici has got small prisms, so you'd have a smaller field of view, and - most of all - it is only designed for terrestrial observations at magnifications of no more than 80x, just like most spotting scopes
To make use of the quality of the Grossfeldbino, you should use a seperate glasspath corrector and either a T-2-prism (for the shortest possible connection) or an Amici which is designed for astronomical use like #2456130 (Baader T-2 / 90° Baader Roof-Prism).
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|Net weight (kg)||0.13|
|Optical Design||Erecting Prism|
|Inner Connection (lens sided)||M28.5|
|Outer Connection (lens sided)||ø 1¼" (31.75 mm)|
|Outer Connection (eyepiece/-camera-sided)||M42 x 0.75 (T-2)|
|Reflection surface||Total reflection|
|Image Orientation||Erect image, Non-reversed|
|Optical length (mm)||variabel|
|Clamping System||no clamp|
|Inner Diameter / Clear Aperture (mm)||25|