These guide scopes now come with a 10 mm threaded extension. Using the threaded extension, this guide scope may be converted into a straight through finder scope! Just install the extension between the focuser and main finder scope tube as shown below and add our optional 1.25” reticle eyepiece. But please note, this guide scope is not designed to work with a diagonal.
The Stellarvue guide scope weighs 18 ounces and works with all of our standard 50 mm ring systems. This guide scope employs the same high quality 210 mm focal length, broadband fully multi-coated objective lens as in our top rated F50 finder scopes. Other fittings are black anodized. Main tube is interior painted in ultra flat black. Focuser is lubricated for improved stability and smoothness. Tube is 54.5 mm in diameter, dew shield is about 58 mm in diameter. The length is 9 1/4” - 9 3/4”.
Some guide cameras have a very short back-focus distance. If you cannot attain focus with your guide camera and need to focus beyond the maximum extension, you may purchase additional STE52 extension tubes to increase the distance between the focuser and objective lens. Purchase these on the STE52 page.
Important! When installing mounting rings DO NOT unscrew the dew shield. The objective may fall out. Always unscrew the rear assembly (adapter, prism, focuser, eyepiece) from the main tube to install the rings.
*Rear thread size for all F050 models is M52 x 1mm