The F50 Guidescope w/Straight-Through Helical Focuser by Stellarvue:
Stellarvue's F50G Guidescope has a focal length of 210 mm and sports an objective that is finished off with a broadband FMC coating for beautiful clarity and contrast. The F50 Guidescope is similar to the Stellarvue 50 mm finderscope, except it is designed to accept an M42 x .75-inch threaded T-ring or 1.25-inch nosepiece rather than a slip-fit diagonal.
The F50G includes a 10 mm threaded extension, which allows you to convert the optical tube into a straight-through finder. Simply install the extension between the guidescope's helical focuser and the main tube and then add the 1.25-inch standard or reticle eyepiece of your choice.
The 1.25-inch non-rotating helical focuser is lubricated to give you a smooth focusing experience. The F50G will fit Stellarvue's standard 50 mm ring systems, creating a nice guiding system for your refractor or other telescope.
Stellarvue F50G Guidescope Specifications:
- Aperture: 50 mm
- Focal Length: 210 mm
- Focuser: 1.25-inch non-rotating Helical
- Weight: 18 ounces
- Diameter of Tube: 54.5 mm
- Diameter of Dew Shield: 58 mm
- Tube Length: 9.25-inch to 9.5-inch
OPT Product Number: SV-F50G