- 50mm aperture; large diameter objective lens collects more light; the target in the field of view is clearer; convenient to find a target in the sky
- Connect telescope camera; as a guide scope can be used with other accessories to easily achieve automatic star guidance
- Connect Eyepiece; as a right-angle correct-image optical finder scope (Eyepieces and Prism Diagonal sold separately)
- Fully multi-coated glass; multi layer broadband anti reflection coating double glue lens; well made edge coating; higher contrast and clearer field of view
- Fine focusing; double spiral fine focusing and pull out coarse focusing structure; simple structure and convenient operation
A very versatile guidescope
Model | SV198 |
Type of Optics | Achromat Refractor |
Lens Structure | 2-Elements/ 1Groups |
Tube material | Aluminum |
Aperture | 50mm / 1.97in |
Focal ratio | f/4.1 |
Focal Length | 206.6mm / 8.13in |
Coating | Fully multi-coated |
Blackened Lens Edges | Yes |
Focuser | Dual Helical + Telescopic Design |
Dual Helical Focuser Focusing stroke | 11mm |
Focusing seat accuracy (Dual Helical Focusing) | 0.1mm |
Rough Focusing stroke | 38mm |
Focusing seat accuracy (Rough Focusing) | 1mm |
Connection thread to Eyepiece | 1.25" and T2 |
Base installation type | Vixen standard interface |
Tube diameter | 55.5mm |
Dew cap diameter | 58mm |
Total Length | 223mm |
Net Weight | 770g / 28.1oz |
The SV198 50mm aperture guide scope with a built-in dual helical focuser is known for its versatility, let alone the lightweight. Together, all of those make SV198 a perfect tool for guiding, searching, and spotting. The full multi-coated achromat glass brings excellent optical performance, makes it great for both sharpness and color. BTW, it also could be used as a right-angle correct-image optical finder scope (Eyepieces and Prism Diagonal sold separately).
The package includes:
- SV198 50mm f/4.1 mini Guide Scope
- Two-Ring bracket with a dovetail
- 6PCS Nylon-tipped thumbscrews
- 25" Dust Cover
- Lens Cover