Used TPO 2" Crayford Focuser for Schmidt-Cassegrain Telescopes-SOLD

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  • Regular price $174.00

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Accessories Added

  • This is a used item in excellent condition
  • Rotates a full 360 degrees
  • Fits Schmidt-Cassegrain Telescopes
  • A 10:1 fine adjustment knob for superior fine tuning
  • Eliminates SCT image shift.
  • Custom CNC machined from aluminum and black anodized
  • Includes 1.25 inch adapter.


Used TPO 2" Crayford Focuser for Schmidt-Cassegrain Telescopes-SOLD

This Third Planet Optics Dual-Speed Linear Focuser for Schmidt-Cassegrain telescopes features the most recent innovation in focuser design to hit the astronomy market in recent years. Designed specifically to meet the heavier equipment and stability requirements of astrophotography and heavy eyepieces, the linear stability and repeatable quality of focus reached with this focuser will keep you coming back for more spectacular views of and sharper images of the night sky!

By using this 2 inch Crayford SCT focuser in lieu of the telescope's primary mirror, image shifting is completely eliminated. This can be a mere nuisance for casual observers, but is a serious problem for imagers.

Built with an innovative stainless steel rail system that provides extended, consistent, and linear contact with the focusing mechanism and the inside of the focuser body, even when the focuser is fully extended. This constant contact prevents slop from building up in the focuser drawtube. The result is zero flexure throughout the focus travel range, even in the worst case scenario when the focuser is parallel to the ground and carrying a heavy load such as a large CCD camera. This new linear bearing rail system also allows for the use of heavier loads up to 9 lbs.

A 10:1 fine adjustment knob gives the user superior fine-tuning ability with remarkable stability for an extended period of time. The focuser position can be locked in place with the large thumbscrew on top of the focuser for critical imaging applications. The underside of the focuser features another screw to control the focusing tension. A laser-etched measurement scale in the drawtube helps with consistently rapid focusing. This focuser also has 360 rotation ability so that it can be turned in any direction for better observing.

Attaches to the rear thread of Schmidt-Cassegrain telescopes. Custom CNC machined from aluminum and black anodized for superior aesthetics in a dependable and durable unit.

TPO 2 inch Crayford Focuser for Schmidt-Cassegrain Telescopes Specifications...

  • Minimum focuser height without 1.25 inch adapter: 4.65 inches or 118mm.
  • Maximum focuser height without 1.25 inch adapter: 6.65 inches or 169mm.
  • 1.25 inch adapter height: 0.39 inches
  • Tube travel length: 2 inch
  • Focuser weight with 1.25 inch adapter: 25.6 oz.
  • Outside diameter of drawtube: 2.32 inches
  • Diameter of focus knob: 1.57 inches
  • Diameter of microfocus knob: 1.06 inches
  • Flange thread: Standard SCT female thread (2 inch, 24 TPI)
  • Measurement scale on focuser drawtube: Yes
  • Rotatable: Yes
  • Dust plug: 1.25 inch dust plug included

TPO Product Number: CF-LST


Accessory TypeFocusers
Focuser DesignCrayford
Focusing KnobsGeared 10:1 Fine Adjustment
Focusing SpeedsTwo Speed
Included AdaptersOne 1.25" with Dust Plug
Rotatation360 degrees
Thumb ScrewsIncludes Four/ Plus a Locking Screw
Warranty90 Day


  • 2"TPO Crayford focuser
  • 2" to 1.25" adapter
  • Caps and original foam lined box


Ask a Question
  • Can this focuser be used on the Meade LX200 Classic 8-inch?

    Yes, it will work on an LX200 Classic 8"

  • Is this product compatible with an EdgeHD800?

    Yes, this focuser is compatible with the Celestron 800 EdgeHD optical tube.

  • Can an electric focuses control be added to this focuser?

    The manufacturer does not offer any support for motors, but there are a couple of third party options. Please contact us for more information.

  • weight?

    The OTA weight is around 13 lbs.

  • Will this work on a C8 w/6.3 focal reducer for imaging with a small sensor CCD like the Atik 414?

    Yes, this combination will work within limits (Scope->Reducer->focuser->small/shallow back-focus CCD camera), but it will work best if the sensor of the camera is 105mm from the rear surface of the focal reducer. If you use a ruler, take 105mm (4.15"), a

  • weight?

    Hello, The weight of the 2" SCT Crayford focuser is 1 pound and 12 ounces.

  • What year was this manufactured? Does it come with the GPS module?

    Hi can you specify what itens/ acessories come with? stills available? shipping to Brasil?

  • What year was this manufactured? Does it come with the GPS module?

    Unfortunately, serial numbers on Celestron telescope do not correlate to production runs. We do not have the means to know what year this was made.

  • Will this focuser fit/work with a Meade 10-inch LX90-ACF and do you recommend it?

    This will work with a Meade 10-inch LX90-ACF. It will fit the SCT threads with the included adapter to the scope. I would recommend this focuser is you plan on using it for visual astronomy or planetary imaging.

  • Will this fit a Meade 8" 2080? Thanks

    Yes, this focuser will thread onto the 2" rear thread on the 2080's visual back.

  • Hi, will this focuser fit a Intes Micro 716 Deluxe Mak?

    As long as your scope has SCT threads this will fit.

  • will this fit on an older 8" Celestron Ultima 2000 sct? It has an equatorial wedge mount. Thanks, W. Ripka

    It will definitely mount to the rear-cell thread, but how well it will fit is highly dependent upon the other accessories you will be using. For reference, the focuser, at minimum extension, is 4-inches long. Take a look at how much clearance you have b

  • Will this focuser fit / work on a Celestron 6SE? and would you recommend it?

    This focuser can technically fit, but the original focuser will obstruct the crayford focuser knobs in some orientations and the scope will not balance on the SE mount without additional weight at the front of the scope. The focuser will also prevent the

  • Will this fit on this? CE-91036-XLT And would you recommend it?

    Yes, this focuser with fit the CE-91036-XLT and will work well for visual accessories and light cameras (DSLRs and small CCD cameras).