20 results for "8" newtonian telescope" between $5.00 and $4,000.00

Silky smooth cast and machined aluminum 2 inch diameter Crayford style focuser: - 35 millimeters of focus travel, - tension adjustments, - drawtube position lock, - compression ring for clamping eyepiece in place without marring it's barrel. Fine Annealed Pyrex Primary Mirror for better thermal stability. Fine Annealed Pyrex Secondary Mirror. Adjustable Primary Mirror Cell. Adjustable Secondary Mirror Cell. Durable enhanced aluminized mirror coatings. Optics very smoothly hand finished. ...

The new Meade LXD75 SN-8AT 8" Schmidt-Newtonian Telescope offers a high-performance equatorial mount, heavy-duty, all-metal field tripod and precision drive system. Stable Meade LXD 75 German Equatorial Mount is designed for high-performance observing and astrophotography, the LXD75 Series sets a new Meade standard in their price class for sturdiness, precision operation and smoothness of movement. With the LXD75 , Meade engineers have created a virtually backlash-free equatorial mount incorporating...

Our 8"aperture deep-sky imaging specialist boasts features usually reserved for much pricier astrophotography telescopes. In fact, the Orion 8" f/3.9 Newtonian Astrographs powerful imaging performance easily exceeds whats achievable with many premium apo refractors costing thousands of dollars more. Its 8" parabolic primary mirror has 800mm of focal length, making the fast f/3.9 Newtonian an ideal wide-field astrophotography telescope. A substantial 70mm minor axis secondary mirror provides full...

800mm focal length operating at a fast f/4 focal ratio for a wide, true field of view. Multi-coated optics for bright, crisp images. Impressive resolving power of 0.63" and limiting stellar magnitude of 13.3. Optical tube assembly weighs only 11.68 pounds. R.A. Micro-Movement Axis: Whole Circle Movement 144-Tooth Worm Gears. Declination Micro-Movement Axis: Whole Circle Movement 144-Tooth Worm Gears. R.A. & Declination Circles: Supplied. R.A. Graduation is 10' increment, Declination Graduation...

Completely adequate, solid performance. Adjustable yet smooth friction/drag on both axes. 3.4 inch (86 mm) Diameter Setting Circles in R.A. and Declination help one find their way around the night sky, and learn how use the celestial coordinate navigation system developed for astronomy. Pole Alignment Telescope included with durable protective cover. Fine geared controls in elevation and azimuth to facilitate a more accurate Pole Alignment. Adjustable Height tripod with 2 inch diameter stainless...

Newtonian Reflector Telescopes mounted on a Dobsonian base

800mm focal length operating at a fast f/4 focal ratio for a wide, true field of view. Multi-coated optics for bright, crisp images. Impressive resolving power of 0.63" and limiting stellar magnitude of 13.3. Optical tube assembly weighs only 11.68 pounds. Built in DC servo motors allow for improved motion of the polar axis rotation and reduce the need for heavy counterweights and a retractable counterweight shaft provides easy storage and transportation. The mount supports up to 50 lbs. and...

Intermediate These scopes offer higher performance and more advanced features than Level 1 models. They typically take a bit longer to learn and need some set-up or adjustments. But anyone with the slightest technical bent will have no problem getting familiar with these models. Referring to the manual is recommended. Orion 8" f/3.9 Newtonian Astrograph Reflector Telescope Free Standard Shipping Was $479.99 Now $429.99 You Save $50.00 Quantity: More Shipping...

The Parallax Instruments PI250 10" f/6.5 Newtonian Reflector OTA is a high performance research grade instrument. Light gathering and resolving power capable of both deep sky and planetary performance represent the ultimate in a personal telescope. Yielding a generous image scale, the Parallax Instruments PI250 Telescope remains relatively manageable in physical size. Push-pull type primary and secondary mirror cells afford easy yet positive locking collimation adjustments. The Parallax Instruments...

One of the telescope focuser knobs is removed using the supplied Allen wrench and the focusing collar of the JMI focuser is pushed onto the manual focuser’s exposed drive shaft until the rubber O-ring inside the focusing collar grips the focuser shaft firmly. The rubber O-ring provides a secure grip on the telescope’s focus knob to turn the focuser under the command of the electric focuser’s hand control pushbuttons. The O-ring also acts as a slip clutch to allow manual operation of the focuser using...