I bought two of these for solar eclipse / transit watching with my children and have seen the transit of mercury from a professional observatory in Georgia (Europe). When the oil ran out in the generators, the telescopes were closed down and I got the only transit picture from the national observatory of Abastumani! In Turkey, I was invited to view a £6000 hydrogen alpha telescope as the eclipse started - look! There are four sunspots!! No I said, looking at my £40 cardboard telescope, there are 6 sunspots - there were indeed - sometimes simplicity in the optical pathway leads to clearer images. Every year for over a decade I instructed my Science and Society class in the Kilkenny Baha'i Summer School to observe the sun with their own eyes - through this marvelous little wonder that is a small but very accurate lens / mirror and a projection telescope that folds to a pizza box. Its traveled the world and just captured a Mercury Transit 11/11/19. Brilliant.
Of course you can use the Hyperion eyepieces with the telescope, but will show the coma which is typical for such a fast telescope (just like a camera would di, too). To get rid of the coma, we recommend combining your eyepieces with the 2" MPCC V-1 Mark III Newton Coma Correktor - SET: Visual and Photographic Version # 2458403 which can easily be combined with many eyepieces. This coma corrector neither changes the focal length nor the field of view.
Please note that the 36mm eyepiece will result in an exit pupil of 8mm with your telescope, which is probably too much for your eyes (typically, the human pupil doesn't open much farther than 7mm even for young people and under darkest skies). The 31mm eyepiece should be more useful with an exit pupil of ca. 6.9mm.
Answer by: Baader Web Team (Admin) on Jan 18, 2021 9:39:00 AM
guys this stuff is far to complicated to use. I need "YOU" to put together a usable package i can use. I have a stellarvue 80mm f6.9 with feathertouch 2in focouser. All i currently have is your Hyperion Mark IV 8-24mm Zoom Eyepiece, i need a borlow, and a prism diagonal and any other items to assemble everything together, i prefer to keep it as simple as possible. thanks for your help
This prism is made especially for the old Maxbright bino-viewer, it is meant to be attached directly to the T-thread of the bino-viewer, mainly for terrestrial observations.
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")
In its 2.25x-configuration, it works with all 1.25" eyepieces, including the Hyperion Zoom (when the 1.25" nosepiece is used).
For 1.3x, it can only be used with eyepieces where no optics are inside of the 1.25" nosepiece, as the lens body has to be inserter into the nosepiece. So it can't be used in 1.3x-configuration with the Hyperion Zoom.
Answer by: Baader Web Team (Admin) on Jan 18, 2021 9:50:00 AM
I have a C8SE with 2" TV Everbrite Dielectric and I use the original maxbright with 2 x 17.5 Morpheus. Can you please tell me how the the UAG-II would improve my setup. What difference would I see, if any?
I also read about the ideal distance of "121mm", by using the bino + 2" TV diagonal, what is my distance?
Also can the UAG-II be used in conjunction with the GPC 1.7?
Thanks for your help, I am trying to learn!
The UAG II is designed for use in directly in front of the Maxbright II bino. It won´t fit well onto the old Maxbright, sorry to say. Also any 2" diagonal is not suitable in this configutation. It would be necessary to take the shortest attainable optical path - and this is the T-2 Prism diagonal.
Sorry - we do not think it makes much sense when trying to put a 2" diagonal into the beam - most likely you won´t reach focus.
The 112mm are equal to the light path of the bino-viewer, so that the UAG must be placed very close to the body to work. Also, the focal length of a Schmidt-Cassegrain changes, if you move the focus farther away from the telescope, so that the reducing factor changes - if you can reach focus at all.
You can not combine the Alan Gee with a glasspath corrector - this is one of the combinations where you do not reach focus at all with a Schmidt-Cassegrai - and you would combine an element to reduce the focal length with one to extend the focal length. You are better off if you use the Alan Gee for low magnifications and a glasspath corrector for higher magnifications.
Answer by: Baader Web Team (Admin) on Jan 18, 2021 11:11:00 AM
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