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Alstar 45 Degree Diagonal Optical Inside Review

2

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Very good

Revainrating 4.5 out of 5  
Rating 
4.3
📷 Camera & Photo Accessories

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Description of Alstar 45 Degree Diagonal Optical Inside

High quality optical Prism inside rather than a mirror which makes your image clear and sharp. 1.25" 45-degree mirror star diagonal for any telescope with 1.25" connector (not suitable for Newtonians). More comfortable viewing orientation as you observe from above, filter thread for any 1.25" filter. Accepts standard 1.25" eyepieces. This is a great diagonal for daytime terrestrial use and night time astronomy applications for telescopes or spotting scopes. Protective coating on the mirror to ensure a long life, metal barrel - for secure seating in the focuser.

Reviews

Global ratings 2
  • 5
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  • 4
    1
  • 3
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  • 2
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  • 1
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Type of review

Revainrating 4 out of 5

Fantastic diagonal for sharp images

I recently purchased a 45 degree diagonal for my camera and it has exceeded my expectations. As a result of my tests i determined that the images produced with this diagonal are incredibly sharp and clear. The diagonal is well-made, fits snugly onto my camera, and is a valuable addition to my photography gear. The only downside is that it is a bit pricey. Overall, I highly recommend this diagonal for anyone looking to enhance their photography and electronics gear. .

Pros
  • Provides a comfortable viewing angle for stargazing
Cons
  • Requires additional space to accommodate the diagonal component, increasing the overall bulk of the telescope setup

Revainrating 5 out of 5

Thread size 28mm x 1mm

I will likely update this review once I have more experience with it. My main reason for purchasing this particular erecting prism was that of all the 45 degree prisms on Revain this was the only one pictured with detachable eyepiece tubes. I want to replace the eyepiece holder with a microscope tube so that I can use the microscope eyepieces and the eyepiece projection camera adapter. As far as I can tell these tubes are 28mm thread diameter and 1mm thread pitch with a maximum of three…

Pros
  • New
Cons
  • Clean