Pentax SMC XW 20mm Wide Angle Eyepiece (1.25") - 19x w/ 65mm, 25x with 80, 31x with 100mm Pentax Scopes WindTech SG-1 57" Rear Cooling Fans

57" Rear Cooling Fans

5" (25 x 114 mm) Maximum Diameter Bundle: 1

The RedBot comes pre-programmed with the Optiboot (Uno) bootloader

with no popping on the outputs when switched

and the aperture ring has been de-clicked for smooth iris pulls

Pentax SMC XW 20mm Wide Angle Eyepiece (1.25") - 19x w/ 65mm, 25x with 80, 31x with 100mm Pentax Scopes WindTech SG-1 57" Rear Cooling Fans70 Apparent Field of View 20mm Eye Relief Waterproof & Fogproof Fits Pentax Spotting Scopes Pentax premium spotting scopes adhere to the American standard of 1. 25" eyepiece thread diameter, facilitating the use of eyepieces from independent manufacturers. That also means, of course, that the wonderful Pentax eyepieces can be used in other telescopes and spotting scopes which accept 1. 25" eyepieces. Pentax eyepieces are a near consensus choice