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- With this Laser collimator get the best image from your telescope you need to align your telescope regularly and this high quality laser collimator is an essential for this purpose. To get the most out of your Newtonian scope you really need to align or collimate the mirrors. It can take some time getting used to aligning both the secondary and primary mirrors and this laser collimator can make it much easier.
- The next generation Laser Collimator for mirror (refractor) telescopes has a 45 degree plate made of aluminum for easier visual accuracy. Collimation is the alignment of elements inside an optical system like a telescope. Colimating a telescope consists of adjusting the tilt and position of the mirrors and lenses to ensure that the focal point reaches optimum focus at the point from which the image will be viewed (the eyepiece or possibly a camera).
- Many factors can affect the alignment of your optical system and can cause the mirrors to move slightly such as vibrations from movement or expansion and contraction from temperature changes. A mirror which is not properly aligned will cause the light path to shift. The changes to the optical system's light path will cause an image to become blurry and or unviewable. In order to ensure that you're seeing the best images your telescope is capable of providing, you should collimate you telescope before each use. Additionally you should collimate your telescope any time images become blurry. This laser collimator is designed to be used in a 1.25 inch focuser.
Newcomer? NO Problem!
This adjustment tool can be used in all 1.25" focusers. We provide you with precise instructions in German and English, with a step-by-step explanation of how to adjust a Newtonian telescope using this laser unit. So, even if you are a newcomer to amateur astronomy, it is very simple to get the optimum performance out of your telescope.
Package Includes:
- 1 x Alstar Laser Collimator
- 1 x 2 Inch Adapter
- 1 x User Manual
Features of Alstar Alignment 1.25" Next Generation Laser Collimator 2" Adaptor for Newtonian Telescopes
7 Level Brightness Adjustable
Red laser collimation beam with 7 brightness levels, wave length 635-655nm; Output power: less than 5mw, much safer for your eyes. Aim at the target anytime, anywhere, even during the daytime can also be used normally. (Warning:Don't look directly into the laser beam! Permanent eye damage may result! Avoid prolonged skin exposure to laser rashes or burns may occur! )
Removable 2" Adapter
This is the newest 1.25" laser collimator includes removable 2" adapter; the triple cemented lens to improve the stability of dot; It's designed for accurate collimation of all Newtonian and SCT reflector telescopes. It is very easy to simply look at the laser target and adjust the telescope until the red dot is centered. no need to keep looking at the cap in the telescope's eyepiece.
Next Generation Laser Collimator
The 1.25 inch next generation laser collimator has been improved from the original elliptical granule beam to the spots beam, so that people can better understand whether it has been collimated.
Storage Precautions: Avoid exposing the collimator to the water, dust, or prolonged periods of direct sunlight. Store the collimator in a cool, dry environment.
Power Supply Mode - Battery
The Laser Collimator is powered by one CR2032 battery (Not Included). When the laser beam starts to dim or completely fades, it’s time to replace the battery. To do so, unscrew the knurled battery compartment cap at the top of the collimator. With a knife tip or the end of a paper clip, lift the edge of the expired battery out. Insert a fresh CR2032 battery with the positive (+) side up. Then replace the cap. The CR2032 is a commonly used battery in watches, calculators, cameras, and other electronic devices, so you’ll be able to find one at most drug/hardware stores or online.
Harol Gálvez
2025-09-01 13:30:26
El mejor colimador en relación calidad/precio. Muy práctico. FaltarÃa que incluyan qué tipo de pila es la que necesita y poder adquirirla sin problemas.
Jerry Darby
2025-08-07 15:27:00
I would give it a 5 star but NO WHERE in the instructions does it tell you what type of battery does it take. (CR2032) It does not include one either. I had to come back to the page and pose a question to get an answer. We happen to have such a battery on hand and its really dim when you first insert. Maybe it has to be in the dark to use it?
S. D.
2025-07-30 12:51:11
I've used many collimators, and none are easier than a laser collimator. The main thing that's important about a laser collimator is that it is itself collimated. If the laser is not shining perfectly perpendicular to the length of the collimator then it's never going to help you perfect your scope's collimation. You can learn how to do this online a few different ways, but essentially if you rotate your laser while it's supported to rotate in place along its long axis, the laser's dot should not draw a circle on the far wall even in a large room; it should remain pointed at exactly the same spot through its entire rotation. If it's off, you might have to use the adjustment grub screws to center the beam. Often these are set at the factory and the set screws are glued so they don't move, but the glue can be dug out to reveal them if needed in the future. My test of this laser performed well enough in this test that I did not feel the need to dig out and adjust the screws, which is a good start.In the field, with my 12" Newtonian dob I'm able to dial in my collimation as well with this laser as with any of the others I have, some of which are significantly more expensive. I can't guarantee that the quality control is good enough that ALL of their lasers will be as lucky, but I'm happy to say mine is pretty good, whether it's by luck or not.Note that this type of collimator is only useful for Newtonian telescopes (which includes "Dobsonians" which are really just Newtonian scopes on a Dobsonian mount). If you have any kind of catadioptric scope that combine lenses and mirrors like a Schmidt or Richie Cassegrain, or if you have a refractor telescope with just lenses, then this tool is NOT for you. In the case of an SCT/RCT you can collimate them by simply defocusing on a bright star like Vega and adjusting your secondary mirror screws to create perfectly even thickness donut rings of light in your eye piece, no special tools required (there technically are collimator tools for these, but they are very expensive and complicated to setup). In the case of a refractor, you don't need to collimate a refractor, the lenses are glued in place.In any event, my own experience with this particular collimator has been quite good and especially at this price I would not hesitate to recommend giving it a shot before paying 2-3x more for the other brands.
Customer
2025-07-25 11:53:49
Good
Slip Mahoney
2025-06-29 12:51:41
I doubt this is just an isolated incident. After the battery has been installed and I turn the knob to on, the laser does NOT stay on and you have to touch and move the knob to make it stay on. It is probably not making good contact somewhere in the laser but it was NOT where the battery compartment was. I say, so you do NOT have to waste your time sending it back after getting a little frustrated, just spend a few bucks more for a reliable name brand laser. Peace to all
Jaeger
2025-06-24 15:49:34
This laser collimator makes easy work of collimating your reflector telescope. You will want to read up on the process to understand the fine details of how to collimate the telescope, or you could easily render it unable to see anything.Many of the articles I read pointed out that a laser collimator needs to be collimated itself, or it will yield improper results. This unit did not have accessible collimating screws for the laser, but careful testing confirmed that it was aligned correctly so that it would do a proper job of collimating the mirrors of the telescope. You must be sure to do the collimation steps in the correct order or you can end up with your telescope way out of alignment.I found this unit to be very helpful in collimating my telescope, and it's much more effective now.
Zaleena Chellappah
2025-06-22 19:13:07
Used for collimating my 8 inch Dob Telescope. Followed instructions on U TUBE. Easy to use.
Glenn Smith
2025-04-29 18:12:15
I collaborated with a friend of mine who has a Celestron Schmidt-Cassegrain 4" w/motor drive. We were disappointed to find that Celestron collimates this telescope at the factory and they do not require adjustments.That said, the machining of the aluminum collimator is superb. It fits the tube for the eyepiece easily with no lateral movement once installed. The instructions are clear. Even though you cannot adjust this scope, it can be used to test the collimation of the scope.If you notice fuzzy images or know that you instrument has been subjected to abuse (think fall) this is an inexpensive way to check before sending your 'baby' back to the factory.One recommendation: Study the process of using triangular adjustments before you start turning screws. There is an excellent YouTube video discussing how to collimate a telescope.One comment unrelated to this product. The Celestron Website is cumbersome, clunky and stone age. They use CAPTCHA to determine if you are human or robot. Why? What is there to 'Hack" (think cranky old guy comment) You are warned.This is a good product.
DentsM
2025-02-04 17:32:49
Worked very well for initial alignment and now for touch ups in the field. Worth the money in saving time and frustration of aligning on a paper target across the room.
Tony Trentadue
2025-01-16 19:46:43
Did not work properly it looked like the box was opened so I returned it.
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