ZWO DARKENING RINGS FOR EFW IOPTRON-IP The Geoptik small Losmandy dovetail

The Geoptik small Losmandy dovetail saddle can be used to attach a 1Kg counterweight (SKU 30A073A) to standard Losmandy-style dovetail bars in order to help with balancing uneven setups

Housing Die-cast aluminium

better engineering quality and great italian design

What many don’t know is that typical quartz oscillators used in electronics (and also in your typical PC) are not temperature compensated

ZWO DARKENING RINGS FOR EFW IOPTRON-IP The Geoptik small Losmandy dovetailThe ZWO Darkening Rings is a set of thin shims designed to prevent light leaks occurring in the gap between EFW filter wheels and ZWO imaging equipment. The D88 rings have an external diameter of 88mm, making them suitable for the EFW 5 x 2", 7 x 2", 7 x 36mm V1 & 7 x 36mm V2. With a thickness of less than 0. 2mm, they do not add any significant backfocus distance for most setups. Four rings are included in total. The D90 rings have an external