Extension Tube Set 42mm Telrad The 15 mm Kellner eyepiece

The 15 mm Kellner eyepiece offers a nice medium magnification view in most telescopes

NOT Waterproof

Individually Tested

Having a true diffraction-limited optical design and sized to encourage spontaneous stargazing sessions

the increase can be significant and not without performance consequences

Extension Tube Set 42mm Telrad The 15 mm Kellner eyepieceThread size is 42mm (. 75 pitch) for use with any standard T Ring or T Adapter. These handy extension sets can be used to securely place your camera where you want it. Threaded Male on one end, Female on the other. Includes 4 pieces (20mm, 15mm, 10mm and 5mm). CNC machined of aluminum, fully baffled and anodized black.