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Key Features
- 2" Eyepiece Holder with 1.25" Reducer
- Adapter for Connection to SCT Backs
- BK7 Glass, Diffraction-Limited Optics
- 58-Layer Dielectric Coatings
Enjoy better views through your telescope and change eyepieces and accessories faster and more easily with the Celestron 90° Dielectric Star Diagonal. The diagonal has a 2" holder for today's larger accessories and imaging gear, and it comes with a 1.25" reducer adapter to make it compatible with the most popular size of gear from eyepieces to Barlows, filters, and a near-infinite array of accessories.
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Can this be used on a 150mm Maksutov?
Can this be used on a 150mm Maksutov?
If the 150mm Maksutov-Cassegrain telescope model features a 2" visual back, the 2" 90-degree Dielectric Star Diagonal with Twist-Lock will be compatible.
Date published: 2023-04-26
Do I need an additional 2” visual back to use ...
Do I need an additional 2” visual back to use this diagonal? I have a Evolution 9.25 telescope
No, the 2" 90 degree Star Diagonal with Twist-Lock comes with 2 interchangeable adapters that allows you to switch between a Schmidt-Cassegrain thread adapter and a 2” barrel adapter. You will be able to use this diagonal with a wide variety of telescopes, including the NexStar Evolution 9.25.
Date published: 2022-08-23
Can this product be attached to the NextStar 6 ...
Can this product be attached to the NextStar 6 SE?
Yes, this will fit all the nextstsr scopes. They are all standard within the line
Date published: 2020-04-09
Hi. For a Celestron Nextstar 8SE telescope, will ...
Hi. For a Celestron Nextstar 8SE telescope, will upgrading to this star diagonal make a significant improvement to viewing quality and/or photography quality?
Upgrading to 2" eyepieces is a personal choice. Many find it easier to observe through. The 2" Twist-Lock Diagonal produce a reflective surface greater than 99% so nearly all of the incoming light will reach your eye. When viewing dim, deep-sky objects, capturing every photon of light is highly important.
Date published: 2021-02-11
Can the 1.25" eyepiece adapter included be used ...
Can the 1.25" eyepiece adapter included be used with 2" filters? Will they fit? So we can use 2" filters with 1.25" eyepieces with this 2" diagonal and 1.25" adapter.
2" filters will be able to thread into the 2" nosepiece adapter so that 1.25" eyepieces can be used.
Date published: 2022-02-04
Is the 2”/1.25” model works in a nexstar 8se? ...
Is the 2”/1.25” model works in a nexstar 8se? Could I use an 2” eyepiece with this? Use a 2” eyepiece is better than an 1.25”?
Absolutely! The 2" Twist-Lock diagonal can be attached to the NexStar 8SE's rear cell threads and will give you the option of using 2" eyepieces and with the adapter, 1.25" eyepieces as well.
Date published: 2021-04-07
I bought two Celestron 102GT from B&H five years ...
I bought two Celestron 102GT from B&H five years ago that have 45 degree diagonals. Would this improve their view and also, would they improve 1.25" eyepieces or does this require 2 inch eyepieces?
The NexStar 102GT accepts a 1.25" diagonal, so 1.25" eyepieces of various focal lengths and apparent field of views are recommended to enhance the views.
Date published: 2021-01-04
Will this diagonal fit onto a dobsonian ...
Will this diagonal fit onto a dobsonian telescope?
The Celestron 90° Dielectric Star Diagonal with Twist-Lock (2"), B&H # CEDSDTL2, is not recommended for use with Dobsonian telescopes. It places the eyepiece parallel with the telescope tube, making it nearly impossible to view through the eyepiece. It will also space the eyepiece too far from the focuser for the telescope to focus accurately. For Dobsonian telescopes, their eyepieces must be inserted directly into the focuser.
Date published: 2024-12-16