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.
Focus and camera use
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.
Mounting configuration
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.
Optional imaging correction
The dedicated EvoGuide 50ED field flattener is a separate accessory. Sky-Watcher Japan lists an approximately 28 mm corrected field with this flattener.
Manufacturer 50ED II dovetail-equipped configuration used; original finder-only package remains separate. Exact supplier SKU is not used to override manufacturer data.
Additional specifications
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
SW0454
Fiche technique
Diamètre (mm)
50
Largeur de la queue d'aronde (mm)
43
Verre ED
S-FPL53
Focale (mm)
242
Rapport F/D
f/4.8
Modèle
EvoGuide 50ED — 50/242 with dovetail
Montage
Tube rings, finder bracket and narrow dovetail
Formule optique
ED refractor guidescope
Correcteur en option
Dedicated EvoGuide 50ED field flattener
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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
