The SFU-1004 StarBeam Finder with Flip Mirror - Newtonian Mount by Tele Vue:
Designed to be compatible with all Newtonian telescopes, this exquisitely designed red dot reflex finder is not only functional but a true work of physics genius and optical art. For anyone who has ever used an illuminated concentric circle finder or red dot finder, there is a point where it is difficult - if not impossible - to see the projected image. Not so with the Tele Vue Star Beam! Let's take a look at the man behind the curtain...
Located behind the flip mirror is an illuminator. This is the projector that produces the red finder star which is fully user-adjustable for color, brightness, and size. At the business end of the Tele Vue SFU-1004 Star Beam Finder, a 39 mm aperture high-quality concave lens collects starlight and acts as a beam splitter - collimating and combining the background view and the 10 arc minute diameter projected red star. The highly polished first lens surface acts as a mirror and a compensating curve designed into the second lens surface provides the normal sky background view. Both surfaces are multi-coated to eliminate double images. This means no matter what angle you view from, the projected red "star" stays stationary - from two inches to two feet. The Tele Vue StarBeam Finderscope offers 6-arc-minute accuracy - regardless of eye position. No more head turning, eye blinking, and moving around to find the red alignment image and guessing with high power eyepieces... It's there!
The light-weight pivoting first surface flip mirror allows the StarBeam to be used either straight-through, as a right angle finder or whatever angle the user needs. The removable black metal base channel fits the dovetail slot machined into the mounting ring of all current Tele Vue TV-85, TV-101, TV-102, and Tele Vue Renaissance-101 models. Screws thread through the base channel and into the telescope mounting ring, holding the base channel in place. Just slide the Tele Vue SFU-1004 Star Beam Finderscope on the base rail, secure with the knurled knob, and align to your telescope's optics with the azimuth and altitude adjustment knobs. Elegance meets ease.
Tele Vue StarBeam Finderscope Features:
Nothing says quality like the Tele Vue StarBeam Finder. The StarBeam is custom machined completely from aluminum and then black anodized, even down to the "push-pull" thumb screws. No tools are required to align StarBeam with your telescope and all mounting hardware is included. Doesn't your telescope deserve the Tele Vue StarBeam?
- Rotary brightness control for 10 arc-minute diameter projected red finder star.
- Multi-coated lens surfaces
- Custom machined black anodized aluminum construction
- Removable black metal base channel fits Newtonian telescopes with 4" or larger optical tube diameter
- Lifetime Tele Vue Warranty
OPT Product Number: TE-SFU-1004
Customer Note: As of 1/1/12, Tele Vue has extended its warranty on eyepieces, Barlows, Powermates and parracors from 5 years to a LIFETIME warranty! This will be effective on sales on 1/1 moving forward only and is not retroactive in any way. The warranty will still cover optical performance, optical coatings, optical cementing, plus mechanical components and operation of the product. This warranty still applies to the original owner and a dated proof of purchase must accompany any warranty repair claim.