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Collimation Tools

Items 1 - 25 of 108

Astro Systems 1.25" Autocollimator Eyepiece - AUTOCOL

SKU: AST-AUTOCOL
  • This AstroSystems 1.25" Autocollimator fine tunes optical alignment following the use of the LightPipe/SightTube or laser collimator.
  • Uses a flat mirror to provide the optical system with a second reflection.
  • Doubles the accuracy of a Cheshire, LightPipe, or laser collimator.
  • Comes with a 14-page instruction booklet.
$49.00

Astro Systems Lite Pipe / Site Tube Combo - 1.25" - LPST

SKU: AST-LPST
  • This AstroSystems collimator combines LightPipe and SiteTube collimators into one simple, low-cost device.
  • LightPipe accurately aligns Newtonian reflector telescope optics, while the SightTube accurately aligns the focuser with the secondary mirror.
  • Construction consists of precision-designed anodized aluminum, acrylic insert, and stainless steel crosshair wires.
  • Comes with a 14-page instruction booklet.
$49.00

AstroZap Artificial Star - AZ-1600

SKU: AZP-AZ1600
  • The AstroZap Artificial Star is suitable for use as a telescope collimator.
  • Works as both a tabletop unit or attached to a standard photo tripod via the 1/4-20 adapter found on the underside.
  • Provides a false star for all star party attendees.
  • The star generated by this device does not move and thus prevents any problems with tracking or centering.
  • Atmospheric conditions, no matter how severe, will not affect the accuracy of the collimation provided by the AstroZap Artificial Star.
  • Proper AstroZap Artificial Star placement depends on the telescope model being used.
$110.00
Celestron Collimation Eyepiece for 1.25" Focusers

Celestron 1.25" Cheshire Collimation Eyepiece - 94182

SKU: CEL-94182
  • Optimally suited for precisely collimating Newtonian reflector telescopes, this Celestron 1.25" Cheshire Collimation Eyepiece is capable of aligning Schmidt-Cassegrains as well.
  • Fits 1.25" focusers and diagonals.
  • A small opening on one end and tiny cross hairs on the opposite end facilitate easy alignment.
  • Offers accuracy superior to simple collimation tools.
$39.95 $32.95
Baader Planetarium Mark III Laser Collimator

Baader Planetarium Mark III Laser Collimator - LASER

SKU: BAD-LASER
  • Designed and calibrated in Germany for accurate alignment, the Baader Mark III Laser Collimator features all-metal construction.
  • Contains an etched plate that is viewable through the back of the laser collimator body.
  • Optimally equipped for collimating Schmidt-Cassegrain telescopes.
  • The Baader Planetarium MKIII Laser Collimator is also suitable for use with Newtonian reflector telescopes.
$99.00

Bob's Knobs Astro Tech Collimation Knobs - Secondary Mirror - AT10RC

SKU: BOB-AT10RC
  • Set of three collimation knobs from Bob's Knobs designed for the Astro-Tech 10" RC telescope's secondary mirror.
  • Measuring 16 mm (5/8") in diameter, these knobs feature black plastic construction.
  • Although the factory supplied dust cover may come into contact with these collimation knobs while they are installed, it will still remain in place.
  • These Bob's Knobs Collimation Knobs contain stainless steel threads.
$25.95 $20.76

Bob's Knobs Astro Tech AT12RC Collimation Knobs - Secondary Mirror - AT12RC

SKU: BOB-AT12RC
  • Set of three collimation knobs from Bob's Knobs designed for the Astro-Tech 12" RC telescope's secondary mirror.
  • Measuring 16 mm (5/8") in diameter, these knobs feature black plastic construction.
  • Although the factory supplied dust cover may come into contact with these collimation knobs while they are installed, it will still remain in place.
  • These Bob's Knobs Collimation Knobs contain stainless steel threads.
$25.95 $20.76

Bob's Knobs Astro Tech AT6RC & AT8RC Collimation Knobs - Secondary Mirror - AT8RC

SKU: BOB-AT8RC
  • Set of three collimation knobs from Bob's Knobs designed for Astro-Tech 6" and 8" RC telescope secondary mirrors.
  • Measuring 16 mm (5/8") in diameter, these knobs feature black plastic construction.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed, although some secondary mirror height differences may cause the knobs to be too high for the dust cover to fully seat.
  • These Bob's Knobs Collimation Knobs contain stainless steel threads.
$25.95

Bob's Knobs Celestron 11" SCT f/10 Metric Collimation Knobs - Black Oxide - C11METBO

SKU: BOB-C11METBO
  • Measuring 12 mm or 1/2" in diameter, these Bob's Knobs Collimation Knobs fit Celestron 11" CPC, EdgeHD, and metric Fastar Schmidt-Cassegrain telescope models.
  • Construction and threads both consist of black oxide steel.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed.
  • Some telescopes may contain a small plastic cover over the factory collimation screw which will need to be removed before installing these Bob's Knobs collimation knobs.
$20.95

Bob's Knobs Celestron 11" SCT f/10 Collimation Knobs - Standard Secondary - C11STD

SKU: BOB-C11STD
  • Measuring 16 mm or 5/8" in diameter, this Bob's Knobs Collimation Knob set fits Celestron 11" f/10 Schmidt-Cassegrain telescopes with standard collimation and flat secondary housing collimation screw threads.
  • Made from black plastic with black anodized aluminum alloy threads.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed.
  • These collimation knobs are not compatible with CPC 1100 or 11" EdgeHD telescopes.
$20.95

Bob's Knobs Celestron 11" SCT f/10 Fastar Standard Collimation Knobs - C11STDFST

SKU: BOB-C11STDFST
  • Measuring 16 mm or 5/8" in diameter, these Bob's Knobs collimation knobs fit Celestron standard collimation C11 Schmidt-Cassegrain telescopes with "Trifid" rotary cover Fastar secondary housing screw threads.
  • Made from black plastic with stainless steel threads.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed.
  • With these Bob's Knobs Collimation Knobs installed, it is crucial that the rotary secondary cover remain open.
$19.95

Bob's Knobs Celestron 14" SCT f/11 Collimation Knobs - Standard Phillips - C14STDPHI

SKU: BOB-C14STDPHI
  • Measuring 16 mm or 5/8" in diameter, these Bob's Knobs collimation knobs fit Celestron C14 f/11 Schmidt-Cassegrain telescope models with standard thread Phillips factory collimation screws, whether or not they contain Fastar.
  • Made from black plastic with black anodized aluminum alloy threads.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed.
  • These Bob's Knobs Collimation knobs are not compatible with Celestron C14 SCTs with EdgeHD optics.
$20.95 $16.76

Bob's Knobs Celestron 14" SCT f/11 Collimation Knobs Set Screw - C14SET

SKU: BOB-C14SET
  • Measuring 19 mm or 3/4" in diameter, these Bob's Knobs collimation knobs fit Celestron C14 Schmidt-Cassegrain telescopes that have factory headless set-style collimation screws, including those with Trifid Fastar secondary housing.
  • Made from black plastic with black anodized aluminum alloy threads.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed.
  • With these Bob's Knobs Collimation Knobs installed, it is crucial that the rotary secondary cover remain open.
$19.95

Bob's Knobs Celestron 5" SCT f/10 Metric Secondary Collimation Knobs - Black Oxide - C5METBO

SKU: BOB-C5METBO
  • Measuring 12 mm or 1/2" in diameter, these Bob's Knobs collimation knobs fit Celestron 5" f/10 Schmidt-Cassegrain telescopes manufactured in 2006 or later that contain black Phillips factory collimation screws.
  • Construction and threads both consist of black oxide steel.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed.
  • Some telescopes may contain a small plastic cover over the factory collimation screw which will need to be removed before installing these Bob's Knobs collimation knobs.
$20.95

Bob's Knobs Celestron 5" SCT Collimation Knobs Standard Secondary - C5STD

SKU: BOB-C5STD
  • Measuring 13 mm or 1/2" in diameter, this Bob's Knobs Collimation Knob set fits Celestron 5" f/10 SCTs with silver Phillips, silver Allen, or black Allen factory collimation screws.
  • These collimation do not offer compatibility with telescopes featuring black Phillips factory collimation screws.
  • Made from black plastic with black anodized aluminum alloy threads.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed.
  • Some telescopes may contain a small plastic cover over the factory collimation screw which will need to be removed before installing these Bob's Knobs collimation knobs.
$18.95

Bob's Knobs Celestron 6" SCT Collimation Knobs Secondary - Black Oxide - C6BO

SKU: BOB-C6BO
  • These Bob's Knobs Collimation Knobs fit all versions of the Celestron 6" f/10 SCT.
  • Each collimation knob in this set measures 12 mm or 1/2" in diameter.
  • Construction and threads both consist of black oxide steel.
  • The factory supplied dust cover will fit most versions of this design with the exception of some earlier variants with these collimation knobs installed.
$20.95

Bob's Knobs Celestron 8" EdgeHD Collimation Knobs - Black Oxide - C8EDGBO

SKU: BOB-C8EDGBO
  • Measuring 12 mm or 1/2" in diameter, these collimation knobs from Bob's Knobs fit Celestron 8" f/10 Schmidt-Cassegrain telescopes with EdgeHD optics and Fastar.
  • Construction and threads both consist of black oxide steel.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed.
  • These collimation knobs are not compatible with 8" SCTs with Fastar secondary that do not have EdgeHD optics.
$20.95

Bob's Knobs Celestron 8" SCT Hyperstar Secondary Collimation Knobs - Black Oxide - C8HYPBO

SKU: BOB-C8HYPBO
  • Measuring 12 mm or 1/2" in diameter, these collimation knobs from Bob's Knobs fit Celestron 8" f/10 Schmidt-Cassegrain telescopes with Hyperstar and metric collimation screws.
  • Construction and threads both consist of black oxide steel.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed.
  • These collimation knobs are extra long compared to other metric knobs offered by Bob's Knobs in order to make up for the Hyperstar's countersunk factory screws.
$20.95

Bob's Knobs Celestron 8" SCT Collimation Knobs - Metric - Black Oxide - C8METBO

SKU: BOB-C8METBO
  • Measuring 12 mm or 1/2" in diameter, these Bob's Knobs Collimation Knobs fit Celestron 8" f/10 Schmidt-Cassegrain telescope models made in 2005 or later with Black Phillips factory collimation screws featuring metric threads.
  • Construction and threads both consist of black oxide steel.
  • Some telescopes may contain a small plastic cover over the factory collimation screw which will need to be removed before installing these Bob's Knobs collimation knobs.
  • These knobs are compatible with metric Fastar instruments only and therefore will not work with EdgeHD optics.
$20.95

Bob's Knobs Celestron 8" SCT Collimation Knobs Secondary - C8STD

SKU: BOB-C8STD
  • This Bob's Knobs Collimation Knob set fits Celestron 8" f/10 Schmidt-Cassegrain telescopes models manufactured after 1980 with factory silver, Allen, or Phillips collimation screws, either with Fastar secondary with silver collimation screws or without.
  • Each knob in this set measures 13 mm or 1/2" in diameter.
  • Made from black plastic with black anodized aluminum alloy threads.
  • Some telescopes may contain a small plastic cover over the factory collimation screw which will need to be removed before installing these Bob's Knobs collimation knobs.
  • These collimation knobs are not compatible with Celestron vintage orange optical tubes manufactured before 1980 as well as most telescopes with black Phillips factory collimation screws.
$20.00

Bob's Knobs Celestron 9.25" SCT Fastar Collimation Knobs Secondary - C925FST

SKU: BOB-C925FST
  • Measuring 9.5 mm or 3/8" in diameter, these Bob's Knobs collimation knobs fit Celestron 9.25" f/10 Schmidt-Cassegrain telescopes with "Trifid" Fastar secondary housing.
  • Made from black plastic with stainless steel threads.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed.
  • With these Bob's Knobs Collimation Knobs installed, it is crucial that the rotary secondary cover remain open.
$20.95

Bob's Knobs Celestron 9.25" SCT Secondary Collimation Knobs Metric - Black Oxide - C925METBO

SKU: BOB-C925METBO
  • Measuring 12 mm or 1/2" in diameter, these Bob's Knobs Collimation Knobs fit Celestron 9.25" f/10 CPC Schmidt-Cassegrain telescopes with metric screw threads.
  • Construction and threads both consist of black oxide steel.
  • The factory supplied dust cover will fit per usual with these collimation knobs installed.
  • Some telescopes may contain a small plastic cover over the factory collimation screw which will need to be removed before installing these Bob's Knobs collimation knobs.
  • These knobs are not compatible with CPC 925 telescopes with Trifid Fastar or EdgeHD optics.
$20.95

Bob's Knobs Celestron 9.25" SCT Collimation Knobs Standard Secondary - C925STD

SKU: BOB-C925STD
  • Measuring 16 mm or 5/8" in diameter, this Bob's Knobs collimation knob set fits Celestron 9.25" f/10 Schmidt-Cassegrain telescopes that have standard collimation screw threads.
  • Made from black plastic with black anodized aluminum alloy threads.
  • The factory supplied dust cover will fit as per usual with these collimation knobs installed.
  • Includes a set of long spacers so that the secondary housing lip can be cleared.
  • Prior to installation, please make sure the knob threads and factory screw threads match.
  • These collimation knobs are not compatible with the CPC 925 or telescopes with EdgeHD optics.
$20.95

Bob's Knobs SkyWatcher 5" - 10" & C6, C8, and C10; Newtonian Secondary Collimation Knobs - CNSEC30

SKU: BOB-CNSEC30
  • These Bob's Knobs Secondary Collimation Knobs fit a wide variety of telescopes including the Celestron C10-N/NGT, C8-N/NGT, Orion Astroview, Star Blast, Skywatcher, Skyview, SkyQuest XX and XT, and many more.
  • Each knob in this set measures 13 mm or 1/2" in diameter.
  • Made from black plastic with stainless steel threads.
  • Compatible with Celestron 6", 8", and 10" Newtonian reflectors as well, whether they contain GoTo electronics or not.
$20.95

Bob's Knobs Secondary Collimation Knobs for Orion OD Newtonians & C6, C8, and C10- CNSEC35

SKU: BOB-CNSEC35
  • These 35 mm long 4-Vane Phillips Secondary Collimation Knobs from Bob's Knobs fit a wide range of mass produced Newtonian reflector telescopes such as the Meade LightBridge and Astro-Tech Imaging Newtonian.
  • Each knob in this set measures 13 mm or 1/2" in diameter.
  • Made from black plastic with stainless steel threads.
  • Compatible with Celestron 6", 8", and 10" Newtonian reflectors as well, whether they contain GoTo electronics or not.
$20.95

Collimating your reflector or Schmidt-Cassegrain telescope is simple and hassle-free with these collimation tools from High Point Scientific! Optics out of alignment, or collimation, yield images with noticeable imperfections. For example, stars will not come to a pinpoint focus and planets will look slightly hazy. The best way to prevent this from happening is to collimate your scope. Our experts have found you the best tools in the industry to make collimation a breeze.


Collimation is often the most frustrating aspect for beginners, but it doesn’t have to be. Enjoy an artificial star or lite pipe to make sure your scope gets the precise collimation it needs. With a wide selection of Cheshires, laser collimators, autocollimators, collimation knobs, we offer you the tools to make your collimation experience as easy as possible. In fact, we offer collimation tools from the most trusted brands in the industry, including Celestron, Orion, FarPoint, Bob’s Knobs, HoTech, Baader, as well as many others.


Once you get used to it, collimation is as quick as a minute or two. Be sure to check your optics periodically to make sure they are properly aligned. In fact, it may be best to check your optics before each viewing. Check out our collimation kits so you can what collimation method works best for you. Not sure where to start? The experts at High Point Scientific are ready to help you get the most out of your scope!

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