Tele Vue 3.5mm Delos Local Only Optical Info Optical Design Mak-Cass

Optical Info Optical Design Mak-Cass Mirror Coatings Radiant Aluminum Quartz (RAQ)™ coatings with 94% reflectivity Lens Coatings Fully Multi-Coated Glass Type BK7/Borosilicate True Aperture (mm) 182 Primary Aperture (mm) 199 F/Ratio 15 Focal Length (mm) 2700 Secondary Diameter 41mm Secondary Obstruction (by diameter) 23% Secondary Obstruction by Area 5% Observational Info Dawes Limit 0

so you can mount your device/scope on the either side for better balance

lower magnification eyepieces have better eye relief than higher power models

and happily gobble them back up when you're finished for the day

StarSense calculates the coordinates of the center of the captured image

Tele Vue 3.5mm Delos Local Only Optical Info Optical Design Mak-CassDescription Introducing Delos Tele Vue is pleased to introduce the Delos, mid to short focal length line of 20mm eye relief, 72 apparent field of view eyepieces. Every optical, mechanical, and ergonomic aspect was rethought to achieve reference standard performance for any visual application. The Delos was conceived as a narrower field Ethos. Reducing the field to 72 allowed freedom to increase eye relief, while controlling pupil aberrations, all