The Marathon MA-SQ1642W90 1.64' Two-Way 90-Degree Truss Corner is a 12 x 12" truss segment that features metal fabrication. Its 90-degree form factor allows it to be used in making right-angled truss constructions.

12" Square Truss Segment    Metal Construction

Related Questions and Answers

Q: 1. 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: 2. 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: 3. does it give same performance if I use 1.25 eyepiece. or if I use 1.25 diagonal with 1.25 eyepiece. which one has better performance?

A: This is an upgraded Diagonal compared to the Diagonal shipped as standard equipment with Celestron Telescopes and will give improved performance with both 1.25 and 2 inch eyepieces. This diagonal should provide improved performance over most 1.25 Diagonals and will be more versatile.

Q: 4. will this fit the celestron nexstar 102 slt?

A: i think they make photographic adapter rings to match different diameter accesorys

Q: 5. Do you need any additional hardware to connect this to a f34 truss?

A: The Global Truss SQ-4121 2-Way 90° F34 Square Truss Corner (Silver) only comes with one set of connectors. If you do not have any you will need another set, four of, BH #GLCOUPLER (https://bhpho.to/47xtHjm)

Q: 6. What are the inside dimensions ?

A: As per the manufacture. The inside diameter off that circle is 1,420mm or approximately 4’ 7-29/32”. The truss itself is 290mm or 11-27/64” in width (hence 2,000 – 290 – 290 = 1,420mm). Please note that as this is a welded product these dimensions may vary slightly.

Q: 7. Can you clarify the 1.64' length? Is each "leg" of the truss 1.64'? Is that from outside corner or inside corner or centerline of truss? I appreciate it. We're drawing up a truss system and have some critical connection points to consider.

A: The length on this Global Truss SQ-4123 F34 Corner is measured from end to end.

Q: 8. What is the clear aperture of the Celestron 2 SCT diagonoal?

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

Q: 9. 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: 10. Is there an adapter that comes with this which also allows for the use of 1.25 lens?

A: Yes it comes with an adapter.