Evostar 150ED Black Diamond — 150/1200 ED doublet The original Evostar 150ED is a 150 mm ED doublet with a 1200 mm focal length at f/8. It provides an unobstructed optical system for detailed lunar and planetary observing and imaging with suitable equipment.
Manufacturer model: Evostar 150ED Black Diamond — 150/1200 ED doublet · Specifications checked against manufacturer data on 2026-11-04
The original Evostar 150ED is a 150 mm ED doublet with a 1200 mm focal length at f/8. It provides an unobstructed optical system for detailed lunar and planetary observing and imaging with suitable equipment.
Sky-Watcher’s original catalogue describes metallic high-transmission coatings, a dual-speed focuser and an aluminium carrying case. The ED doublet design is intended to limit chromatic aberration while keeping the lens assembly simpler than a triplet.
The standard 150ED is distinct from the DX/Deluxe version with its larger rack-and-pinion focuser and upgraded attachment hardware. It is also distinct from the newer retractable-hood EDX. The manufacturer catalogue does not publish a complete dimensional table for the standard version, so DX/EDX tube measurements are not assigned to it.
Sky-Watcher manufacturer documentation
Original 150ED identified in the Sky-Watcher Australia branded catalogue. Only published standard-version information used. Current DX web page contains conflicting standard/DX text; its dimensions, focuser and package are not transferred.
| Model distinction | Original 150ED; not 150ED DX or 150EDX |
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Data sheet
Evostar 150ED Black Diamond — 150/1200 ED doublet The original Evostar 150ED is a 150 mm ED doublet with a 1200 mm focal length at f/8. It provides an unobstructed optical system for detailed lunar and planetary observing and imaging with suitable equipment.
Manufacturer model: Evostar 150ED Black Diamond — 150/1200 ED doublet · Specifications checked against manufacturer data on 2026-11-04
