Galoc Barlow and Filter Set
Vintage Galoc (Saturn logo) 2X Barlow that has been modified to take Series V* [30 mm] photographic filters. Imported from Japan in the late 1970's, this is an excellent performer, and it's in great condition.
One advantage of this arrangement is that you don't have to change filters when changing eyepieces. Also, you can use the included ND filter in the Barlow and a color filter in the eyepiece to exactly match observing requirements. Alternately, you can use two polarizing filters to control image light intensity**.
*These are the srew-in, solid glass type, but you can use the 30 mm drop-in filters as well. Included in the set: medium red (#25), orange 2 (#21), light orange/straw (#85A), medium green (#56), light blue (#80C), pale blue (#82A), and ND4.
**A Series V polarizing filter is available separately if you want to use this in tandem with a standard 1.25" polarizing eyepiece filter.
Asking $75 for the set, including postage and insurance.