M42 VARIABLE EXTENSION 15 - 18mm Kit The Prime Luce Lab Observatory

The Prime Luce Lab Observatory Dovetail Clamp is 280mm long and features 4 locking clamps to securely lock very large and heavy telescopes

but requires the Focuser Retrofit Kit for RASA 11

The GreenLine BIG-32 is ideal for the demanding astrophotographer

75 male thread

Available in Space Gray

M42 VARIABLE EXTENSION 15 - 18mm Kit The Prime Luce Lab ObservatoryThis variable length adapter consists of a male M42 x 0. 75 thread on one end and a female M42 x 0. 75 thread on the other. Optical thickness of the adapter can be adjusted between 15 18mm. This is very useful for connecting accessories such as filter drawers or filter wheels to correctors which require a very specific backfocus distance. Specifications Optical length 15 18 mm Clear aperture 38 mm Outer diameter 56 mm Connection side A Female M42 x 0.