TS-Optics 1 mm spacer ring for unmounted filters with 50 - 50.5 mm diameter

TS Spacer for unmounted 50-50.5 mm filters

Most unmounted filters of this size are 3 mm or thicker, but there are also thinner filters, like the ones from Optolong. If you want to install these unmounted filters in the filter holder of a filter drawer or filter wheel, they wobble because the recesses are deeper, usually designed for 3 mm. This spacer ring solves the problem.

Simply place the ring on the filter and then carefully tighten the fixing screws. The ring increases the filter thickness by 1 mm and thus ensures a secure fit. The inner diameter of 49 mm means that as little clear aperture as possible is wasted.

- Spacer ring

Safety informations: PDF Download