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The FRA400 optical system uses a premium 5-element design with a built-in field flattener
It is also waterproof but you can't put it in the water
Long distance
particularly under light-polluted skies
CS-M42 Adapter astronomy imaging The FRA400 optical system usesCS M42 Adapter The CS M42 adapter is specifically designed for planetary cameras, allowing you to connect CS lenses with ease. Made with high quality metal, this adapter ensures a secure and reliable connection. Simply attach the adapter to enhance your astrophotography capabilities. Adapter Specifications Material: Metal Adapter: CS female threads and M42*0. 75 male threads Length: 6. 5mm Expand the capabilities of your astrophotography setup with
