Evostar 100ED Black Diamond — 100/900 This Black Diamond Evostar 100ED uses a 100 mm ED doublet objective and 900 mm focal length at f/9. The unobstructed refractor design is suitable for visual astronomy and, with the appropriate imaging accessories, astrophotography.
Manufacturer model: Evostar 100ED Black Diamond — 100/900 · Specifications checked against manufacturer data on 2026-11-04
This Black Diamond Evostar 100ED uses a 100 mm ED doublet objective and 900 mm focal length at f/9. The unobstructed refractor design is suitable for visual astronomy and, with the appropriate imaging accessories, astrophotography.
A dual-speed 2-inch Crayford focuser provides fine adjustment for an eyepiece or camera. Sky-Watcher lists an 8×50 finder, a 2-inch 90° dielectric diagonal with a 1.25-inch adapter, and a 2-inch LET 28 mm eyepiece for this legacy model.
MHTC optical coatings support light transmission. The manufacturer lists an OTA weight of 3 kg; a suitable equatorial mount must also accommodate the camera, diagonal and other fitted equipment. A matching imaging corrector is selected for this ED generation rather than for the newer EDX tube.
Sky-Watcher manufacturer documentation
Global legacy ED specification used. EDX dimensions, focal length and accessory exclusions are not substituted.
Data sheet
Evostar 100ED Black Diamond — 100/900 This Black Diamond Evostar 100ED uses a 100 mm ED doublet objective and 900 mm focal length at f/9. The unobstructed refractor design is suitable for visual astronomy and, with the appropriate imaging accessories, astrophotography.
Manufacturer model: Evostar 100ED Black Diamond — 100/900 · Specifications checked against manufacturer data on 2026-11-04
