StarField M54 Male to C/CS Male Adapter - ADM54MCM Mirror Diagonals 25 is a favorite among

25 is a favorite among astro imagers and discerning visual observers with it offering 33% more light gathering than an 8" model

the user will have to drill a hole in the plastic case of the Telrad unit to install the shaft of the potentiometer which is part of this product

with specs of 458 nm to 508 nm

25" Variable Projection to T-Ring Adapter

StarField M54 Male to C/CS Male Adapter - ADM54MCM Mirror Diagonals 25 is a favorite amongC Mount Adapter for FW5200 and FW8125 Adapter M54 Male to C Mount Male M54 Male threads are M54 x 0. 75 x 3. 5mm C Mount threads are 1" x 32TPI x 10mm Overall height of 12mm Internally threaded to reduce reflections Used for filter wheels, webcam and other small format cameras