Skywatcher Filter Wheel 5 Position 1.25'' 20180 For the astrophotographer looking to

For the astrophotographer looking to reduce periodic error

This is 1 of 4848 approved meteorites (plus 3 unapproved names) classified as H6

The front 'crown' of the filter incorporates milled notches which make handling and threading the filter a more secure operation in the dark

among many other product ideas (which are gradually entering the market…)

25″ low-profile helical self-centering eyepiece adaptor

Skywatcher Filter Wheel 5 Position 1.25'' 20180 For the astrophotographer looking toThis handy, time saving device is a must have for astronomers, for both visual and photographic use. Up to five filters can be installed in the threaded, numbered compartments, and each can be selected for your eyepiece or camera by simply rotating the inner wheel to any of the five click stop positions. One compartment can be left empty for unfiltered viewing. The filter wheel can be attached to your focuser either by the supplied 1. 25 nosepiece