Astrodymium 2.5" Riser Blocks for Refractor Telescopes

These risers lift your entire telescope 2.5" (64.80mm) above the dovetail bar, which as a result allows for the full rotation of the focuser, and the ability to balance the scope properly. 

Risers also prevent off axis guiders & filter wheels from pressing against the ground when the scope is not being used. 

! Thicker dovetail bars will require longer screws (see diagram). 

Note:

• Intended for use on refractors with an aperture of 85mm or smaller.
• Rated for use down to -25C (-13F) and up to 80C (176F) temperatures

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Compatibility is based on the type of thread your tube rings use. The majority of refractor rings use an M6 thread, but some brands such as Stellarvue and Sky-Watcher use a 1/4-20" imperial thread.

• Select the relevant screw type for your refractor.
• If you are unsure what screws you need, both types can be purchased (2.5-RISER-BOTH)
  

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Want to buy your own screws? Choose the "none" option.

• You will need to purchase screws that are either 75 or 80mm long (or the equivalent in imperial).
  
• If you have a thicker dovetail, like the William Optics DSD then you will need an 80mm length screw.

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What's included:

• Two 2.5" (64.80mm) tall riser blocks made out of PETG thermoplastic material.
• Two M6-1.0x75mm or 1/4-20x3" screws.
• If the "both" option is selected, then you will get four screws in total (metric & imperial).

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Pictured telescope is not included.