APM-Telescopes manufactured mechanics, made in Germany, paired with a 2" zenith mirror also of German manufacture with a quality of 1/20 P-V surface provided with the best and most expensive mirroring Germanya a Tafelmeier- 96 % reflection.
Altair Premium Positive-Lock Diagonal - Dielectric 2 inch Pushfit The Altair 2" premium diagonal with positive-lock system grips 2" accessories tightly with a small rotation of the top knurled ring, keeping them precisely centred. The CNC machined chassis will hold extra heavy accessories without flexing, and the mirror features a premium 99% reflective dielectric-coating. Ideal for refractors and large eyepieces or binoviewers, the positive-lock has a very light action and only needs a small 20 degree rotation, letting you quickly replace accessories. There's no need to apply excessive force on thumbscrews or normal twist-lock mechanisms to insert accessories. Once you've tried it, you won't want to use any other diagonal again, it's that easy. Other features: Includes a 2" to 1.25" adapter with compression ring for smaller eyepieces. The 2" Pushfit barrel is precision machined and is threaded for use with standard 2" astro filters (M48x0.75mm thread). Blackened interior for high contrast observation of bright objects. A scratch resistant chemically stable dielectric mirror coating enables more frequent cleaning than softer aluminium-coated mirrors. Super-hard black anodising for extra durability. Includes dust caps for both ends, and a foam filled box. Scope of Delivery: Altair Premium Positive-Lock Diagonal - Dielectric 2 inch Pushfit Specifications: Filter thread: 2" / M48 Connection to eyepiece: 2" and 1.25" compression ring Connection to telescope: 2" with integrated M48 Thread Weight: 500g
2" Lightwave Premium Dielectric Diagonal RED A premium dielectric coated diagonal which is small and compact with very high quality machining and a super-hard black anodised chassis and red anodised sides. Delivers all the optical and mechanical quality you'd expect from a premium diagonal. New improved silver side version with anti-slip barrel and easy grip thumbscrew. Perfect for small airline portable refractors. Non-metallic coatings with 99% reflectvity. Scratch resistant dielectric mirror coating enabling more frequent cleaning than aluminium coated diagonals. Threaded for use with standard 1.25" and 2" eyepiece filters. Blackened interior for high contrast (especially recommended for the moon, sun and planets!). Non-marring brass compression ring Includes dust caps both ends, and a foam filled box. Scope of delivery: 2" diagonal Specifications: Connection to eyepiece: 2" and 1 1/4" Connection to telescope: 2" barrel Clamping: Compression Ring Eyepiece Clamp Coating: 99 % Coating
Product description TS SCT Star Diagonal Mirror with 91% Reflectivity This is a very affordable star diagonal with an exceptional mechanical and optical quality within its price range. Even compared with many much more expensive star diagonals we couldn't see a difference in image quality. 2" Star Diagonals offer a larger possible field of view compared with 1.25" diagonals. This is particularly important for deep sky observing through Schmidt-Cassegrains and Maksutovs with their rather long focal length. The diagonal screws directly onto the SCT thread at the rear of the telescope. Most Schmidt-Cassegrains and many Maksutovs have this thread. The diagonal accepts both 1.25" and 2" accessories. Compatible Telescopes Celestron / Meade SCTs Intes / Intes Micro Maksutov Cassegrains and similar Quality Features all metal design SC thread adpatation 2" accessories are held in place with a brass compression ring 1.25" adapter also with compression ring very good optical quality Brass Compression Rings ( 2" and 1.25" ) 1.25" and 2" accessories are securely held in place using a compression ring. The advantages of compression rings compared with regular locking screws are: the compression ring avoids signs of use. Accessories are not scratched. safer grip and a reduced tendency that accessories are tilted out of the optical axis. Delivery contents 2" SCT diagonal mirror. 2" clamp with compression ring 2"-on-1.25" adaptor with M48 filter thread and 1.25" compression ring dustcaps on the eyepiece side strong giftbox