EvoGuide 50ED — 50/242 with dovetail 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 with dovetail · 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 manufacturer’s dovetail-equipped 50ED II configuration accepts a 31.7 mm camera nosepiece or T-mount connection.
The dovetail-equipped manufacturer configuration includes a 43 mm-wide mounting bar and finder-bracket foot. Sky-Watcher Japan specifies approximately 1 kg with the dovetail fitted.
The dedicated EvoGuide 50ED field flattener is a separate accessory. Sky-Watcher Japan lists an approximately 28 mm corrected field with this flattener.
Sky-Watcher manufacturer documentation
Manufacturer 50ED II dovetail-equipped configuration used; original finder-only package remains separate. Exact supplier SKU is not used to override manufacturer data.
| Focusing | Helical |
|---|---|
| Visual camera socket (mm) | 31.7 |
| Camera attachment | T-mount compatible |
| Weight with dovetail (kg) | Approximately 1 |
| Corrected field with optional flattener (mm) | 28 |
Data sheet
EvoGuide 50ED — 50/242 with dovetail 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 with dovetail · Specifications checked against manufacturer data on 2026-11-04
