- 50mm Aperture; SV198 is convenient for astronomers to find a target in the sky, by improving light-gathering capability, resolution, contrast, and overall usability;
- Position Clamp Screw; The 3 screws on the clamping ring ensure stable, shake-free equipment, easy angle fine-tuning, making it perfect for astronomy and photography;
- 12mm Fine Focusing; Guide scope with a millimeter scale and 12mm focal path enhances the overall effectiveness and accuracy of astronomical observations by providing clearer images, accurate targeting, and improved optical quality;
- 45mm T2-Extension Tube; Design with thread M42*0.75; eliminates a range of focusing problems;Tube rings with Vixen compatible dovetail;
- Wide Compatibility; With an extension tube, the SV198 guide scope is compatible with SV905C guide cameras, as well as a star finder when adding to an standard eyepiece.
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The 50mm aperture in SV198 guide scope significantly enhances their performance by improving light-gathering capability, resolution, contrast, and overall usability.
A 1.25" eyepiece holder with T2 thread enhances the flexibility and usability of SV198 guide scope by providing standardized compatibility, improved light paths, and secure connections for various accessories.
Guide scope with fine focusing enhances the overall effectiveness and accuracy of astronomical observations by providing clearer images, accurate targeting, and improved optical quality.
Featuring a 45mm extension, SV198 can work with insert guide cameras, such as SVbony SV905C, SV305 and etc. The compatibility enhances the focusing range, reduces vignetting, and provides convenience for astrophotography. Without an extension tube, the SV198 guide scope is compatible with standard 1.25inch eyepieces, meeting your various observation needs.
Without an extension tube, the SV198 guide scope is compatible with standard 1.25inch eyepieces, meeting various observation needs.
The design enhances observational performance by reducing reflective interference, improving image contrast, and lowering optical noise.
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 |
| Focusing stroke | 12mm |
| Connection thread to Eyepiece | 1.25" and T2 |
| Base installation type | Vixen standard interface |
| Net Weight | 557g |
The Parameter Comparison of SV198、 SV106and SV165
| Model | SV198 | SV106 | SV165 |
| Type of Optics | Achromat Refractor | Achromat Refractor | achromatic optics |
| Lens Structure | 2-Elements/ 1Groups | ||
| Tube material | Aluminum | Aluminum Alloy | Aluminum |
| Aperture | 50mm / 1.97in | 60mm / 2.36in | 30mm/1.18in |
| Focal ratio | f/4.1 | f/4 | f/4 |
| Focal Length | 206.6mm / 8.13in | 240mm /9.45in | 120mm |
| Coating | Fully multi-coated | Fully multi-coated | Fully multi-coated |
| Blackened Lens Edges | Yes | Yes | |
| Focuser | Dual Helical + Telescopic Design | Helical Focuser with 8 mm Travel | Helical Focuser |
| Connection thread to Eyepiece | 1.25" and T2 | 1.25inch | 1.25in and M42*0.75 |
| Base installation type | Vixen standard interface | Versatile | Vixen standard interface |
| Tube diameter | 55.5mm | 66mm | 45mm |
| Dew cap diameter | 58mm | 69mm | 48mm |
| Total Length | 234mm | 270mm | 112mm |
| Net Weight | 557g | 790g | 342g |
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Feature
- 1. The SV198 50mm small telescope is primarily intended as a guide scope for autoguiding. But it can also be used as a viewfinder or mini telescope.
- 2. Focusing is done using a precise helical focuser with a millimeter scale and 12mm focus path.
- 3. 1.25" eyepiece holder with T2 thread.
- 4. Position clamp screw.
- 5. Tube rings with Vixen compatible dovetail.
- 6. The 45mm T2-Extension Tube Male thread M42*0.75; Female thread M42*0.75; eliminates a range of focusing problems.
Package includes
- SV198 50mm f/4.1 mini Guide Scope
- Lens Bracket
- 45mm T2-Extension Tube
- 1.25" Dust Plug
- Silicone Objective Lens Cover
Applicable Accessories
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