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Collimators

Astromania Next-generation 1.25 in laser collimator (ZAA1025)

A metal-bodied laser collimator with seven brightness steps, a published wavelength band and output figure, and three sealed adjustment ports for trueing the tool itself.

Astromania 1.25 inch laser collimator in anodised aluminium

Astromania Next-generation 1.25 in laser collimator (ZAA1025)

A metal-bodied laser collimator with seven brightness steps, a published wavelength band and output figure, and three sealed adjustment ports for trueing the tool itself.

Method
Laser collimator
Self-collimation ability
Three ports at 120°, initially sealed behind a screw cap at the rear
Barrel fit
Standard 1.25 in
Play
Not published by the maker.
Brightness control
635–655 nm, as the maker publishes it · Less than 5 mW, as the maker states it · Seven
Target visibility
Not published by the maker.
Build
CR2032 lithium; the maker states it is not supplied
Suitable telescopes
Not published by the maker.
Amazon reference
B01D8HMBCQ (same reference on 5 Amazon marketplaces)
EAN
6970019295022
  • Wavelength and output power are both published, which is rare on this shelf
  • Three adjustment ports at 120° let the tool be trued rather than trusted
  • The battery is not supplied and CR2032 cells are easy to be without on the night

Best for: A Newtonian owner who wants a laser they can check and correct themselves

≈ $26 / £32
Check price on Amazon

Specifications

Method
Laser collimator
Self-collimation ability
Three ports at 120°, initially sealed behind a screw cap at the rear
Barrel fit
Standard 1.25 in
Play
Not published by the maker.
Brightness control
635–655 nm, as the maker publishes it · Less than 5 mW, as the maker states it · Seven
Target visibility
Not published by the maker.
Build
CR2032 lithium; the maker states it is not supplied
Suitable telescopes
Not published by the maker.
Amazon reference
B01D8HMBCQ (same reference on 5 Amazon marketplaces)
EAN
6970019295022

The two figures most listings omit

Six hundred and thirty-five to six hundred and fifty-five nanometres, and an output below five milliwatts. Both are published. Whatever else is true of this collimator, a maker that prints its laser specifications is telling you something about the rest of its claims.

The tool that can be checked

Three adjustment ports at 120 degrees, behind a sealed rear cap. That arrangement exists for one reason: a laser collimator can be out of true, and a tool that cannot be corrected has to be trusted blindly. Rotating it in the focuser and watching the dot is the test; these three screws are the cure.

Seven brightness steps

Daylight collimation needs a bright beam to see the return. Night collimation needs a dim one, because a bright spot destroys the dark adaptation the whole evening depends on. A single fixed brightness fails at one end or the other.

The battery

A CR2032, and the maker states it is not included. That is worth a note on the shopping list: a collimator with a flat cell is a paperweight, and the cells are small enough to keep a spare in the case.

Availability

German Amazon store sat at about 64 € on the day of the survey.

American and British Amazon stores list it in local currency, which the euro range above sets aside.

French and Spanish Amazon catalogues hold a record for it that nobody is selling.

Italian Amazon store gave no result whatever, so the buy button there opens a search rather than an empty page.

Figures as Keepa reported them on the day this page was last updated. Stock and pricing shift without warning.

Prices quoted in this text were read on 17 September 2026. The live price is at the top of the page.

What this fits

More collimators

  • Bresser laser collimator in black anodised aluminium

    Bresser Newtonian laser collimator (4910200)

    A 1.25 in laser collimator in an adjustable aluminium housing, with a roughened surface for reading the return beam, published at 212 g.

    Method
    Laser collimator
    Self-collimation ability
    Adjustable anodised aluminium
    Barrel fit
    31.7 mm (1.25 in)
    Play
    Not published by the maker.
    Brightness control
    Not published by the maker.
    Target visibility
    Roughened, so the reflected spot can be seen
    Build
    212 g, as the maker publishes it · Not mentioned in the listing
    Suitable telescopes
    Newtonian, Schmidt-Newtonian and Maksutov-Newtonian, as the maker lists them
    Amazon reference
    B00ADENLT0 (same reference on 5 Amazon marketplaces)
    EAN
    4007922002767
    • An adjustable housing means the tool itself can be trued, which is the precondition for trusting it
    • The three suitable telescope types are named rather than left as “reflectors”
    • No wavelength or output power figure is published

    Best for: Collimating a Newtonian in the dark without a second person or a second tool

    ≈ £75 / €75
    Check price on Amazon
  • Jadeshay collimating eyepiece with red crosshair

    Jadeshay Collimating eyepiece with crosshair

    An aluminium collimating eyepiece with a red crosshair and a long tube, working without any power source at all.

    Method
    Optical collimating eyepiece — not a laser, and it needs no battery
    Self-collimation ability
    Not published by the maker.
    Barrel fit
    1.25 in
    Play
    Not published by the maker.
    Brightness control
    Not published by the maker.
    Target visibility
    Red crosshair · Described by the maker as unusually long for better accuracy · Treated to reduce reflections, per the maker
    Build
    Aluminium alloy
    Suitable telescopes
    Newtonian, per the maker
    Amazon reference
    B07KBXNRNH (same reference on 5 Amazon marketplaces)
    EAN
    0788051500754
    • No battery to go flat, which is the failure mode of every laser on this shelf
    • A long tube genuinely improves the accuracy of a sighting collimator
    • It needs enough light to see the reticle, which means a torch in the dark

    Best for: Anyone who would rather have a tool with nothing in it to fail

    ≈ £21 / €23
    Check price on Amazon
  • POFET metal collimator with 2 inch adapter

    POFET Metal collimating eyepiece with 2 in adapter

    A metal collimator with a triple-cemented lens and a built-in battery offering seven brightness levels, supplied with a 2 in adapter.

    Method
    Triple-cemented lens, per the maker
    Self-collimation ability
    Not published by the maker.
    Barrel fit
    1.25 in, with a 2 in adapter
    Play
    Not published by the maker.
    Brightness control
    Seven · Neither is published
    Target visibility
    Not published by the maker.
    Build
    Built-in battery, described as power-saving
    Suitable telescopes
    Newtonian, per the maker
    Amazon reference
    B08M9FRYXP (same reference on 5 Amazon marketplaces)
    EAN
    0703355530023
    • The maker describes the actual procedure rather than only the product
    • A built-in battery removes the CR2032 problem on a cold night
    • A built-in battery cannot be replaced when it eventually fails

    Best for: A Newtonian owner who would rather charge a tool than keep spare cells

    ≈ £23 / €26
    Check price on Amazon

The rest of this rack

  • Astro Professional blue #80A 2 inch planetary filter

    Astro Professional Blue #80A 2 in

    A blue planetary filter designated Wratten #80A in a 2 in thread, intended to raise contrast on the Moon and planets.

    Wratten number
    Wratten #80A, blue
    Transmission
    The listing gives none
    The features each colour raises
    Raises contrast on lunar and planetary observation
    Aperture suitability
    Not published by the maker.
    Set contents
    Not published by the maker.
    Thread size
    2 in thread
    Amazon reference
    B007IU98K8 (same reference on 5 Amazon marketplaces)
    EAN
    4250514801099
    • A Wratten number is the one designation that means the same thing between makers
    • A 2 in thread is uncommon for colour filters and suits wide-field eyepieces
    • No transmission curve or percentage is published

    Best for: A larger telescope where a blue filter can afford the light it removes

    ≈ £24 / €24
    Check price on Amazon
  • Bresser 2 kg counterweight for EXOS mounts

    Bresser 2 kg counterweight for EXOS-1 and EXOS-2 (4964400)

    A 2 kg counterweight for a 20 mm shaft, colour-matched to the Bresser Messier EXOS-1 and EXOS-2 mounts.

    Mass
    2.0 kg, as the maker publishes it
    Bore diameter
    20 mm, as the maker publishes it
    Locking method
    Not published by the maker.
    Coating
    Not published by the maker.
    Finish
    Colour-matched to those mounts
    Compatible mounts
    Messier EXOS-1 and EXOS-2
    Overall dimensions
    The listing gives none
    Amazon reference
    B007NIIRFM (same reference on 6 Amazon marketplaces)
    EAN
    4007922194608
    • Mass and shaft diameter both published
    • Made for two named mounts, so compatibility is not in question
    • No overall diameter, so clearance against the tripod is unknown

    Best for: An EXOS-1 or EXOS-2 that has gained a camera or a heavier tube

    ≈ €30
    Check price on Amazon
  • Omegon six-piece 1.25 inch colour filter set in its case

    Omegon Colour filter set, 1.25 in, six pieces

    A six-filter 1.25 in colour set for planetary observing, with the maker naming #21 orange and #25 red and describing what each brings out.

    Wratten number
    Not published by the maker.
    Transmission
    The listing gives none for any filter in the set
    The features each colour raises
    Blocks blue and green, raising detail in the belts of Jupiter and Saturn; sharpens boundaries on Mars · Blocks blue and green almost entirely, for very high contrast on Jupiter and Saturn cloud detail
    Aperture suitability
    Not published by the maker.
    Set contents
    Six colour filters; the maker names #21 orange and #25 red
    Thread size
    1.25 in thread
    Amazon reference
    B0017GTVLK (same reference on 6 Amazon marketplaces)
    EAN
    4049467113331
    • Two of the six are named by Wratten number, which makes them comparable
    • The maker describes the effect of each named filter on specific planets
    • Four of the six filters are not identified by number in the listing

    Best for: A planetary observer with a telescope large enough to spend the light

    ≈ £57 / €63
    Check price on Amazon

All collimators