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It is always possible for telescope optics to go out of alignment. Constant transport can mean the OTAs are subject to shocks, which can lead to the optical lens or mirror systems losing their collimation. In extreme cases, such misalignment can lead to a blurred image. That is why there are special eyepieces and laser units that can be used to bring the telescope’s optical system back into the correct state of collimation.

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Howie Glatter Laser pointers 532nm 1.25" & 2"
Howie Glatter
Laser pointers 532nm 1.25" & 2"
$ 1,140.00
ready for shipping in 3-6 months
Hotech HyperStar Laser Collimator 14"
Hotech
HyperStar Laser Collimator 14"
$ 1,060.00
ready for shipping in 6-10 weeks
Hotech HyperStar Laser Collimator 9.25" / 11"
Hotech
HyperStar Laser Collimator 9.25" / 11"
RRP:  $ 1,130.00
Our price:
$ 930.00
ready for shipping in 6-10 weeks
Howie Glatter Laser pointers 650nm 1.25" & 2"
Howie Glatter
Laser pointers 650nm 1.25" & 2"
$ 780.00
ready for shipping in 3-6 months
Hotech Advanced CT laser collimator for 2" focuser with fine adjustment
Hotech
Advanced CT laser collimator for 2" focuser with fine adjustment
RRP:  $ 950.00
Our price:
$ 750.00
Product can be shipped as of 01.08.2025
Hotech Advanced CT laser collimator for 1.25" focuser with fine adjustment
Hotech
Advanced CT laser collimator for 1.25" focuser with fine adjustment
RRP:  $ 1,000.00
Our price:
$ 750.00
ready for shipping in 6-10 weeks
Hotech HyperStar Laser Collimator 8"
Hotech
HyperStar Laser Collimator 8"
RRP:  $ 1,010.00
Our price:
$ 740.00
Product can be shipped as of 01.08.2025
Howie Glatter Laser pointers 650nm 2"
Howie Glatter
Laser pointers 650nm 2"
$ 710.00
ready for shipping in 24 h
Howie Glatter Laser pointers 635nm 2"
Howie Glatter
Laser pointers 635nm 2"
$ 640.00
ready for shipping in 3-6 months
Howie Glatter Laser pointers 650nm 1,25"
Howie Glatter
Laser pointers 650nm 1,25"
$ 468.00
ready for shipping in 3-6 months
Howie Glatter TuBlug 2''
Howie Glatter
TuBlug 2''
$ 456.00
ready for shipping in 24 h
Howie Glatter Laser pointers 635nm 1,25"
Howie Glatter
Laser pointers 635nm 1,25"
$ 386.00
ready for shipping in 24 h
noctutec Electronic collimator OCAL V4.0
noctutec
Electronic collimator OCAL V4.0
$ 339.00
ready for shipping in 24 h
Howie Glatter tuBlug 1.25''
Howie Glatter
tuBlug 1.25''
$ 304.00
ready for shipping in 3-6 months
TS Optics Artificial Star LED collimator 2"
TS Optics
Artificial Star LED collimator 2"
$ 276.00
ready for shipping in 3-7 days
Hotech 2" SCA laser collimator - crosshair laser
Hotech
2" SCA laser collimator - crosshair laser
RRP:  $ 327.00
Our price:
$ 258.00
ready for shipping in 24 h
Hotech 1.25"/2" SCA laser collimator - dot laser
Hotech
1.25"/2" SCA laser collimator - dot laser
RRP:  $ 257.00
Our price:
$ 235.00
ready for shipping in 6-10 weeks
Howie Glatter Holographic Attachment for Laser Collimator - Concentric Circle Pattern
Howie Glatter
Holographic Attachment for Laser Collimator - Concentric Circle Pattern
$ 234.00
ready for shipping in 24 h
Hotech 2" reflecting mirror for Advanced CT laser collimator
Hotech
2" reflecting mirror for Advanced CT laser collimator
$ 222.00
ready for shipping in 6-10 weeks
Howie Glatter Self-Barlow attachment
Howie Glatter
Self-Barlow attachment
$ 222.00
ready for shipping in 24 h
Howie Glatter Holographic Attachment for Laser Collimator - Square Grid
Howie Glatter
Holographic Attachment for Laser Collimator - Square Grid
$ 210.00
ready for shipping in 24 h
Starlight Instruments Laser pointers UNI-Blug 2"
Starlight Instruments
Laser pointers UNI-Blug 2"
$ 204.00
ready for shipping in 3-6 months
Astrozap artificial star
Astrozap
artificial star
$ 190.00
ready for shipping in 3-5 weeks
Hotech 1.25" SCA laser collimator - dot laser
Hotech
1.25" SCA laser collimator - dot laser
RRP:  $ 234.00
Our price:
$ 187.00
ready for shipping in 24 h
Hotech 1.25" SCA laser collimator - crosshair laser
Hotech
1.25" SCA laser collimator - crosshair laser
RRP:  $ 269.00
Our price:
$ 187.00
ready for shipping in 24 h
Geoptik New Artificial star for Refractors
Geoptik
New Artificial star for Refractors
$ 175.00
ready for shipping in 3-5 weeks
Hotech Laser pointers Hyperstar 8" Upgrade Kit
Hotech
Laser pointers Hyperstar 8" Upgrade Kit
RRP:  $ 257.00
Our price:
$ 168.00
ready for shipping in 6-10 weeks
Howie Glatter VLB Cap Upgrade
Howie Glatter
VLB Cap Upgrade
$ 163.00
ready for shipping in 3-6 months
Howie Glatter Barlowed Collimation Plug
Howie Glatter
Barlowed Collimation Plug
$ 159.00
ready for shipping in 3-6 months
Geoptik New Artificial star for Collimation and star test
Geoptik
New Artificial star for Collimation and star test
$ 140.00
ready for shipping in 24 h
Artesky Artificial Stars 1.25"
Artesky
Artificial Stars 1.25"
$ 128.00
Product can be shipped as of 15.07.2025
Baader Planetarium laser colli (collimation device for Newtonian and SC telescopes)
Baader
Planetarium laser colli (collimation device for Newtonian and SC telescopes)
( 4.33 / 5 )
$ 115.00
ready for shipping in 24 h
Geoptik Artificial star
Geoptik
Artificial star
$ 105.00
ready for shipping in 3-5 weeks
TS Optics Collimation Eyepiece for Newtonian Telescopes Concenter 2"
TS Optics
Collimation Eyepiece for Newtonian Telescopes Concenter 2"
$ 101.00
ready for shipping in 24 h
TS Optics Additional module for LED collimator
TS Optics
Additional module for LED collimator
$ 95.00
ready for shipping in 1-2 weeks
TS Optics Collimation Eyepiece for Newtonian Telescopes Concenter 1.25"
TS Optics
Collimation Eyepiece for Newtonian Telescopes Concenter 1.25"
$ 93.00
ready for shipping in 3-7 days
Lacerta Artificial star
Lacerta
Artificial star
$ 93.00
ready for shipping in 1-2 weeks
Starlight Instruments Cross Hair Holographic Attachment (New Version)
Starlight Instruments
Cross Hair Holographic Attachment (New Version)
RRP:  $ 140.00
Our price:
$ 90.00
ready for shipping in 3-6 months
Bresser Laser pointers 1.25"
Bresser
Laser pointers 1.25"
( 4 / 5 )
$ 88.00
ready for shipping in 1-2 weeks
Skywatcher Laser pointers 1mW Red 1.25"
Skywatcher
Laser pointers 1mW Red 1.25"
$ 88.00
Product can be shipped as of 15.07.2025
Bobs Knobs Knobs for Newtonian 12” Primary
Bobs Knobs
Knobs for Newtonian 12” Primary
$ 81.00
ready for shipping in 24 h
Bobs Knobs SCT 5" f/10 metric
Bobs Knobs
SCT 5" f/10 metric
$ 81.00
ready for shipping in 1-2 weeks
Geoptik Laser collimator 1.25"
Geoptik
Laser collimator 1.25"
$ 71.00
Product can be shipped as of 15.07.2025
Celestron 1.25" Cheshire eyepiece (wire crosshairs with long collimation tube)
Celestron
1.25" Cheshire eyepiece (wire crosshairs with long collimation tube)
$ 70.00
ready for shipping in 24 h
Bobs Knobs Knobs for C6 f/10 Secondary with Metric Collimation Screw Threads
Bobs Knobs
Knobs for C6 f/10 Secondary with Metric Collimation Screw Threads
$ 70.00
ready for shipping in 24 h
Bobs Knobs Knobs for C8 f/10 Secondary with Metric Collimation Screw Threads
Bobs Knobs
Knobs for C8 f/10 Secondary with Metric Collimation Screw Threads
$ 70.00
ready for shipping in 24 h
Bobs Knobs Rändelschrauben für Sekundärspiegel von Celestron SC EdgeHD 800
Bobs Knobs
Rändelschrauben für Sekundärspiegel von Celestron SC EdgeHD 800
$ 70.00
ready for shipping in 24 h
Bobs Knobs R200SS primary
Bobs Knobs
R200SS primary
$ 70.00
ready for shipping in 24 h
Bobs Knobs AT6RC and AT8RC secondary
Bobs Knobs
AT6RC and AT8RC secondary
$ 70.00
ready for shipping in 1-2 weeks
Omegon Newton adjusting laser 1,25'' (inspection window) Rev. B
Omegon
Newton adjusting laser 1,25'' (inspection window) Rev. B
RRP:  $ 59.00
Our price:
$ 54.90
Product can be shipped as of 15.08.2025
TS Optics Ronchi eyepiece 1,25"
TS Optics
Ronchi eyepiece 1,25"
$ 59.00
ready for shipping in 3-7 days
Bobs Knobs Rändelschrauben für Sekundärspiegel von Celestron SC EdgeHD 800
Bobs Knobs
Rändelschrauben für Sekundärspiegel von Celestron SC EdgeHD 800
$ 59.00
ready for shipping in 24 h
Hubble Optics 5-star Artificial Stars
Hubble Optics
5-star Artificial Stars
$ 58.00
ready for shipping in 6-10 weeks
Bobs Knobs SCT 9.25" Fastar
Bobs Knobs
SCT 9.25" Fastar
$ 53.00
ready for shipping in 24 h
Bobs Knobs Knobs for C5 f/10 Secondary with Metric Collimation Screw Threads
Bobs Knobs
Knobs for C5 f/10 Secondary with Metric Collimation Screw Threads
$ 53.00
ready for shipping in 1-2 weeks
Bobs Knobs SCT 11" f/10 metric Fastar
Bobs Knobs
SCT 11" f/10 metric Fastar
$ 53.00
ready for shipping in 24 h
Bobs Knobs Secondary mirror knurled screws for Meade Lightbridge Mini Dobsonian
Bobs Knobs
Secondary mirror knurled screws for Meade Lightbridge Mini Dobsonian
$ 53.00
ready for shipping in 24 h
Bobs Knobs Knobs for SkyWatcher Newtonian Secondary
Bobs Knobs
Knobs for SkyWatcher Newtonian Secondary
$ 53.00
ready for shipping in 24 h
Bobs Knobs SCT 14" f/11 metric
Bobs Knobs
SCT 14" f/11 metric
$ 53.00
ready for shipping in 1-2 weeks
Bobs Knobs Knobs for Meade Lightbridge and GSO Dobsonians Secondary Mirror
Bobs Knobs
Knobs for Meade Lightbridge and GSO Dobsonians Secondary Mirror
$ 53.00
ready for shipping in 24 h
Skywatcher Adjustment eyepiece Cheshire 1.25"
Skywatcher
Adjustment eyepiece Cheshire 1.25"
( 5 / 5 )
$ 51.00
ready for shipping in 24 h
Bobs Knobs Meade SCT 10" widefield f/6.3
Bobs Knobs
Meade SCT 10" widefield f/6.3
$ 51.00
Product can be shipped as of 15.08.2025
Bobs Knobs Celestron StarSense Explorer 8"/10"
Bobs Knobs
Celestron StarSense Explorer 8"/10"
$ 51.00
ready for shipping in 24 h
Bobs Knobs SCT 8" (post-1980 Standard)
Bobs Knobs
SCT 8" (post-1980 Standard)
$ 46.90
ready for shipping in 24 h
Bobs Knobs SCT 9.25" f/10 standard
Bobs Knobs
SCT 9.25" f/10 standard
$ 46.90
ready for shipping in 1-2 weeks
Bobs Knobs SCT 11" f/10 standard
Bobs Knobs
SCT 11" f/10 standard
$ 46.90
ready for shipping in 24 h
Bobs Knobs C5 f/10 Metric
Bobs Knobs
C5 f/10 Metric
$ 46.90
ready for shipping in 1-2 weeks
Bobs Knobs SCT 11" f/10 metric
Bobs Knobs
SCT 11" f/10 metric
$ 46.90
ready for shipping in 3-5 weeks
Bobs Knobs Springs for Newtonian 8”, 10”, and 12” Primary
Bobs Knobs
Springs for Newtonian 8”, 10”, and 12” Primary
$ 46.90
ready for shipping in 24 h
Bobs Knobs SCT 8" f/10 3-screw
Bobs Knobs
SCT 8" f/10 3-screw
$ 46.90
ready for shipping in 1-2 weeks
Bobs Knobs SCT 10" f/10 3-screw
Bobs Knobs
SCT 10" f/10 3-screw
$ 46.90
ready for shipping in 24 h
Bobs Knobs SCT 10" f/10 6-screw
Bobs Knobs
SCT 10" f/10 6-screw
$ 46.90
ready for shipping in 1-2 weeks
Bobs Knobs SCT 12" 3- and 4-screw f/10
Bobs Knobs
SCT 12" 3- and 4-screw f/10
$ 46.90
ready for shipping in 1-2 weeks
Seben Laser Pointers Laser Pointers Telescopes Laser Collimator LK1 31.7mm (1.25")
Seben
Laser Pointers Laser Pointers Telescopes Laser Collimator LK1 31.7mm (1.25")
$ 46.90
Product can be shipped as of 15.08.2025
Omegon Deluxe Collimation Eyepiece
Omegon
Deluxe Collimation Eyepiece
$ 39.90
ready for shipping in 24 h
Omegon collimation eyepiece
Omegon
collimation eyepiece
( 5 / 5 )
$ 39.00
ready for shipping in 24 h
Bobs Knobs SCT 14" f/11 set screw
Bobs Knobs
SCT 14" f/11 set screw
$ 43.90
ready for shipping in 24 h
Bobs Knobs Knobs for Newtonian 10” Primary
Bobs Knobs
Knobs for Newtonian 10” Primary
$ 41.90
ready for shipping in 24 h
Bobs Knobs GM-8, G-11 tripod
Bobs Knobs
GM-8, G-11 tripod
$ 41.90
ready for shipping in 24 h
Bobs Knobs SNT 6" secondary
Bobs Knobs
SNT 6" secondary
$ 39.90
ready for shipping in 24 h
Bobs Knobs SNT 10" secondary
Bobs Knobs
SNT 10" secondary
$ 39.90
ready for shipping in 24 h
Bobs Knobs GM-8, G-11 elevation lock
Bobs Knobs
GM-8, G-11 elevation lock
$ 39.90
ready for shipping in 24 h
Bobs Knobs AT12RC secondary
Bobs Knobs
AT12RC secondary
$ 36.90
ready for shipping in 24 h
Bobs Knobs C5 Standard
Bobs Knobs
C5 Standard
$ 32.90
Product can be shipped as of 01.08.2025
Bobs Knobs SCT 14" 6-screw exposed
Bobs Knobs
SCT 14" 6-screw exposed
$ 31.90
ready for shipping in 1-2 weeks
TS Optics Knurled Screws M4 45 mm
TS Optics
Knurled Screws M4 45 mm
$ 31.90
ready for shipping in 1-2 weeks
Bobs Knobs SCT 8" Hyperstar
Bobs Knobs
SCT 8" Hyperstar
$ 29.90
ready for shipping in 24 h
Bobs Knobs 16" RC (GSO)
Bobs Knobs
16" RC (GSO)
$ 29.90
ready for shipping in 24 h
Bobs Knobs 16" Meade SC
Bobs Knobs
16" Meade SC
$ 23.90
ready for shipping in 24 h
Bobs Knobs Bob's Knobs 14" Celestron SC imperial
Bobs Knobs
Bob's Knobs 14" Celestron SC imperial
$ 23.90
ready for shipping in 24 h
Skywatcher Adjustment eyepiece Cheshire 1.25"
Skywatcher
Adjustment eyepiece Cheshire 1.25"
$ 23.90
ready for shipping in 24 h
TS Optics Collimation cap for Newtonian telescopes 1.25"
TS Optics
Collimation cap for Newtonian telescopes 1.25"
$ 13.90
ready for shipping in 24 h