Explore Scientific 0.8X Focal Reducer for f/5 & f/7 ES Refractors - ES-FR0.8X ZWO Seestar 7 mm) Long Accessory Tube

7 mm) Long Accessory Tube for 2

Made of machined aluminum and finished in black anodized process

BaK7 glass

so keeping H and O is meaning for exploration of life

Rear End Threads: M42

Explore Scientific 0.8X Focal Reducer for f/5 & f/7 ES Refractors - ES-FR0.8X ZWO Seestar 7 mm) Long Accessory TubeThe Explore Scientific 0. 8x Focal Reducer lets astrophotographers explore the wonders of wide field astrophotography in an easy to use package. The 0. 8x Focal Reducer works with the following Explore Scientific telescopes: ED80 Essential Series Air Spaced Triplet Refractor Telescope ES ED0806 02 ED102 Essential Series Air Spaced Triplet APO Refractor Telescope ES ED10207 02 ED80 FCD100 Series Air Spaced Triplet Refractor Telescope FCD100 0806 02