Enjoy a comfortable posture when stargazing with your refractor or catadioptric telescope with the 1.25" 45° Erecting Diagonal from Neewer. The diagonal slips into a 1.25" telescope focuser and accepts 1.25" eyepieces, angling them upward at 45°. The diagonal's prism features antireflective multicoating for maximum light transmission, so the view is bright and sharp with good color fidelity. It also allows your telescope to be used for terrestrial viewing, since the prism produces an image that's right-side up and left-right correct with refracting and catadioptrics.

For 1.25" Telescope Eyepiece & Focusers    Suitable for Refractors & Catadioptrics    Image is Upright & Left-Right Correct    Comfortable 45° Angle    Multicoated Optical Prism    Filter Threads on Nosepiece

Related Questions and Answers

Q: 1. Does anyone know the Celestron product number for the square aluminium carry case that comes with this product please? I'd like to purchase it for another of my Celestron diagonals. Thanks

A: We don't sell this separately . You can call Celestron at 310-328-9560

Q: 2. How does it change the up/down, left/right view of the image?

A: The Celestron 90° Dielectric Star Diagonal with Twist-Lock (1.25") does not have the ability to change the view. It is not an erect image diagonal.

Q: 3. Does this diagonal come with a male 'nose' that allows it to be installed into a female visual back?

A: No, the Celestron 90-Degree Mirror Diagonal (2") for SCT Scopes does not come with a male "nose".

Q: 4. What is the transmissive efficiency of the 93527 diagonal mirror?

A: The MFR needs to be contacted for this answer.

Q: 5. Can I use it with a Alpine Astronomical Baader Diamond Steeltrack Crayford Focuser for SCTs?

A: Yes you can as along as it is 2" focusing.

Q: 6. Do you need to purchase anything additional to for to a stock Celestron Evolution 8? Do you need a two inch Visual Back? Or does the Evo. Fit this device?

A: This diagonal is exactly what you need. No other items needed to connect to the Evolution 8. You will remove the visual back you have on the scope now, that will reveal threads. This diagonal threads directly onto the scope perfectly.

Q: 7. Is this diagonal compatible with the Orion ED80 80mm f/7.5 apochromatic refractor’s 2” Crawford focuser?

A: No, the Celestron 90-Degree Mirror Diagonal (2") for SCT Scopes would not be compatible with a refractor like the Orion ED80 80mm f/7.5 Apochromatic Refractor Telescope.

Q: 8. IS THERE FREE SHIPPING TO MESA, AZ 85205?

A: Yes there is. If you add the item to your cart, and type in your ship to Zip Code it will show you the Shipping Options.

Q: 9. What is the clear aperture of the Celestron 2 SCT diagonoal?

A: The Diameter of the ring is 38mm. However no Aperture.

Q: 10. Will this fit a Celestron NexStar Evolution 6". should I just get the the other 1.25" Dielectric Diagonal(with the orange Twist-lock)

A: This will also work on the Evolution 6