The F050M3 fits on either our 50-60 mm finder scope rings or our R076 guide scope dual ring systems. It can be converted to a photographic guide scope by replacing the helical focuser and adapter with an optional non-rotating helical focuser. So if you plan to use this as a finder and guide scope it probably makes more sense to purchase the F050G guide scope and then purchase the finder scope eyepiece separately.
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