Electric Martini
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AstroZap Focusing Caps with Triangle Wheel
AstroCaps are made to fit both your telescope ota and Astrozap aluminum dew shields.Its not just another dust cover - its a multi-functional integrated wheel system which allows for quick shutter-like operation.Triangles are the answer:Each AstroCap is shipped with one triangle wheel for quick focus. Triangles create diffraction spikes which makes it easier to focus.(No more trying to focus on three blobs using a round hole focusing cap.)Simply turn the thumbscrew to open and turn to close.No plastic plugs required.Optional wheels for checking collimation & off-axis viewing are available.AstroCaps are made from aluminum and powder-coated texture black.Wheels are made from ABS plastic and are designed for quick changeovers.No tools needed!
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