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Relaxed observing - with the Alstar mirror star diagonal it is very simple
- Whether it's the Moon, Jupiter or a beautiful nebula - in order to enjoy observing at the telescope you should always be comfortable. In many telescopes, that is only possible by using a star diagonal - which directs the image upwards by 90°.
For any 1.25" refracting, Maksutov or SC telescope
- This Alstar star diagonal has a 1.25" metal barrel. The chrome finish not only looks good, but is also practical, as the star diagonal always remains firmly attached to the focuser. The clamping screws lock the barrel firmly in place without scoring the nosepiece, as is the case with many cheaper products. In short - this barrel will keep your star diagonal in condition for virtually forever.
For a bright image - a coated mirror
- The mirror has had everything that is possible optimised, within this p.rice range, to ensure you enjoy a bright image - even at higher magnifications. It is the link between your eye and the telescope - and is hence just as important.Sometimes you do not want to have to re-install a filter every time you use a new eyepiece. Perhaps you might want to observe the Moon today with a range of eyepieces - but with the same filter? That is also possible due to the filter thread provided in the star diagonal.
Filter thread - for any 1.25" filter
- Sometimes you do not want to have to re-install a filter every time you use a new eyepiece. Perhaps you might want to observe the Moon today with a range of eyepieces - but with the same filter? That is also possible due to the filter thread provided in the star diagonal.
Advantages in a nutshell
- Wide 90 degree angle: You can view correct image from refractor telescope stand and just look down with a comfortable angle.
- Protective coating on the mirror to ensure a long life, metal barrel - for secure seating in the focuser.
- More comfortable viewing orientation as you observe from above, filter thread for any 1.25" filter. Accepts standard 1.25" eyepieces.
- Useful for refractor and Cassegrain telescopes - not recommended for reflectors.
- 1.25" 90-degree mirror star diagonal for any telescope with 1.25" connector (not suitable for Newtonians).
GG
Reviewed in the United States on December 18, 2024
Very nice with caps etc. Would be nice to have a better container than a box and plastic bag though
TheDad
Reviewed in the United States on April 1, 2021
I thought this was going to be a cheaply made item based on the price, and that was okay for what I needed it for.However, I am pleased to say that this is a high quality optical piece made with machined metal and a quality mirror.At this price, I'm shocked.Recommended!
Daniel M Jones
Reviewed in the United States on June 3, 2019
Overall quality is good!
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