- 50mm aperture; SV198 is convenient for astronomers to find a target in the sky; a large diameter can obtain a good view;
- Position clamp screw; easy to adjust the guide scope and astronomical tube; especially important for entry level astronomy enthusiasts;
- Optical glass; multi layer broadband anti reflection coating double glue lens; well made edge coating;
- Precise helical focusing with a millimeter scale and 12mm focal path;
- One scope for multiple purposes; can be used as a guide star and star finder;
- 45mm T2-Extension Tube Male thread M42*0.75; Female thread M42*0.75; eliminates a range of focusing problems;Tube rings with Vixen compatible dovetail.
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