Evostar 80EDX — 80/600 ED doublet The Evostar 80EDX is the upgraded 80 mm ED doublet with a 600 mm focal length at f/7.5. It combines a low-dispersion objective with MHTC coatings for imaging and visual astronomy.
Manufacturer model: Evostar 80EDX — 80/600 ED doublet · Specifications checked against manufacturer data on 2026-11-04
The Evostar 80EDX is the upgraded 80 mm ED doublet with a 600 mm focal length at f/7.5. It combines a low-dispersion objective with MHTC coatings for imaging and visual astronomy.
The 2-inch Crayford focuser has 11:1 fine adjustment and a 2.8-inch indexed drawtube. Its 360° rotatable adapter allows the camera angle to be adjusted for framing. A 2-inch visual adapter accepts a suitable diagonal.
The internally baffled aluminium tube has a retractable dew shield, rings with a carrying handle and a 45 mm-wide mounting bar. Length is 475 mm retracted and 557 mm extended; OTA weight is 4 kg.
The matched 0.85× (20236) reducer/flattener is optional. Sky-Watcher specifies 30 mm image height with that corrector fitted. An aluminium carrying case is supplied; eyepiece, star diagonal and finderscope are not included.
Sky-Watcher manufacturer documentation
Exact named manufacturer model checked. Unpublished measurements and unlisted accessories are not inferred.
| Optional reducer flattener | 0.85× (20236) |
|---|---|
| Corrected image height (mm) | 30 |
| Corrected field condition | With the specified optional reducer/flattener |
| Highest potential magnification | 240 |
Data sheet
Evostar 80EDX — 80/600 ED doublet The Evostar 80EDX is the upgraded 80 mm ED doublet with a 600 mm focal length at f/7.5. It combines a low-dispersion objective with MHTC coatings for imaging and visual astronomy.
Manufacturer model: Evostar 80EDX — 80/600 ED doublet · Specifications checked against manufacturer data on 2026-11-04
