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The Starbeam for Newtonians from Tele Vue is a unique and comfortable finder scope. The Starbeam offers two modes of use. Flip the mirror down for a straight line-of-sight view. When the telescope is pointed high, flip the mirror up for a more pleasant viewing angle. Straight through, you see the natural sky with a 10 arc-minute (1/3 Moon diameter). Using the mirror flipped up, the sky orientation is similar to a refractor's or SCT's image. Either mode utilizes a superimposed "red-star" pointing dot showing your celestial target. A rear knob adjusts the brightness of the "red-star" dot. A side knob varies the "red-star" dot from a steady beam to various blink rates.
The first lens surface acts as a collimating mirror so the "red-star" stays stationary against the sky. The Starbeam has a 39mm aperture. The projected image can be seen at any distance, whether 2 inches or 2 feet away. The accuracy allows you to pin-point objects even with high-power eyepieces. The second lens is multicoated to eliminate double images. The Starbeam is completely custom machined from aluminum and then black anodized down to the "push-pull" thumb screws. No tools are required to align the Starbeam. Mounting hardware and a CR1-3N battery are included.
To attach this Starbeam for Newtonians to any open telescope tube over 4" in diameter, drill matching holes in your tube and use the supplied machine screws and nuts to fasten the included Base Channel to your telescope tube.
For any open telescope tube over 4" in diameter
Viewing from straight through to 90°
Accuracy of 10-arc-minutes at any eye position allows pinpoint object locating with high-powered eyepieces
Custom machined, black anodized aluminum
No tools required for alignment with your telescope