The 48mm Filter Adapter for 2.4" from Tele Vue allows the use of 48mm filters in a 2.4" optical train while adding a 1/4" of spacing to the assembly. It is recommended that it be placed close to the chip/sensor to avoid vignetting. It can also be used with a 2" focuser by employing Tele Vue's RAD-1074 adapter (B&H# TERA).
Adds 0.25" of spacing