EvoGuide 50ED — 50/242 guidescope The EvoGuide 50ED is a compact 50 mm ED guide telescope with a 242 mm focal length and f/4.8 focal ratio. Its low-dispersion objective offers improved colour correction in a portable guidescope format.
Manufacturer model: EvoGuide 50ED — 50/242 guidescope · Specifications checked against manufacturer data on 2026-11-04
The EvoGuide 50ED is a compact 50 mm ED guide telescope with a 242 mm focal length and f/4.8 focal ratio. Its low-dispersion objective offers improved colour correction in a portable guidescope format.
Helical focusing provides fine adjustment for a guide camera. The original version is equipped with a finder bracket for attachment to a suitable telescope.
This original finder-bracket configuration is kept separate from the later dovetail-equipped version; the latter’s additional mounting hardware and assembled weight are not assigned to it.
The dedicated EvoGuide 50ED field flattener is a separate accessory. Use its instructions for sensor spacing and camera attachment when configuring the guidescope for imaging.
Sky-Watcher manufacturer documentation
Original V1 50ED manufacturer catalogue specification used. V2/DX mounting equipment, glass identifiers and masses are not silently assigned to V1.
| Focusing | Helical |
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Data sheet
EvoGuide 50ED — 50/242 guidescope The EvoGuide 50ED is a compact 50 mm ED guide telescope with a 242 mm focal length and f/4.8 focal ratio. Its low-dispersion objective offers improved colour correction in a portable guidescope format.
Manufacturer model: EvoGuide 50ED — 50/242 guidescope · Specifications checked against manufacturer data on 2026-11-04
