Telescope Laser Collimator 1.25inch, Bysameyee Calibrator with 2’’ Adapter for Newtonian Reflector Telescope Collimation (Laser Collimator)
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It must be capable of doing so. It's small enough to fit in a 1. With the included adapter, you can use a 25" focuser or a 2" focuser.
My collimator's laser spot is oval rather than circular. The spot becomes a bar the higher, "brighter," the setting you use. You should be fine as long as you aim for the bullseye.
Selected User Reviews For Telescope Laser Collimator 1.25inch, Bysameyee Calibrator with 2’’ Adapter for Newtonian Reflector Telescope Collimation (Laser Collimator)
This came out of alignment, as other reviewers pointed out. It was also loose in the 1, as others have stated. The focuser is 25 inches in diameter. I wrapped the barrel in teflon tape (not the pipe thread type) to make it fit snugly. Then there was the matter of removing the rubber cover from the alignment screws. Because there is no spring loading, one must back out one screw to tighten another, which makes the alignment process predictable but not precise. Not surprising, but one of the alignment screws was extremely loose at the start, indicating that it had never been adjusted. It was incredibly simple to use once it was aligned to align the scope. The secondary mirror was not mentioned in the instructions, but it was mentioned in another review that the dot should be in the center of the primary mirror's center mark. br>If the manufacturer isn't going to align these properly, they shouldn't cover the alignment screws and should provide alignment instructions.
It must be aligned for the telescope's length. If you have a 12" dob, it should be aligned at a distance of approximately 6 feet. The only way to achieve that level of precision is to remove the alignment screws, grind or bevel the ends to a pencil sharp point, then reinstall the screws and align the laser. The alignment screws are located on the back of the laser, and a rubber o-ring secures the laser's front. ring. The flat head end of the screws shifts the laser/o-ring once they're clamped down. Inside the tube, a ring assembly makes alignment impossible. br>It's a cheap tool, but you'll be able to align it if you bevel the screws.
Everything is more exciting with lasers! br>br>The collimator produces a beam with a variable brightness (1-100). 7 and off), which can be changed by turning a ring on the casing's end. Higher powers allow collimation during daylight, but beyond the third or fourth setting, the beam becomes distorted, resulting in a short line rather than a round dot. It's perfectly round at lower magnifications. br>The beam is nearly perfectly aligned, with only the faintest edge visible on the white target screen, but the adjustment ports have been rubber-sealed. With a hobby knife and a steady hand, someone more daring could probably align it perfectly. br>The collimator is powered by a CR2032 battery, which is included, as well as a 1. 25 to 2- Owners of 2-inch adapters will need an inch adapter. focusers that are 1 inch.
I've had astigmatism in my telescope for years. I, on the other hand, was completely unaware of this. Then I went out and purchased this fantastic little device. I was able to determine that the telescope mirror was out of alignment using it. I used this device and was able to quickly and easily resolve an issue that I was previously unaware of. The planets and stars appeared to be sharper after that. It was a turning point in the game. This low-cost, high-quality device will alter your perspective on the world. In a literal sense.
As a result, having a laser collimator for aligning a reflector is a fantastic tool to have. This one worked well for a while, but I noticed that bumping the collimator caused the laser to shift positions. The laser would rotate around if it was rolled on its side or twisted in the eyepiece holder. I played around with it and got it centered, but it was causing problems that I wasn't aware of. Very helpful! Is it possible to use? Yes. No, it doesn't get five stars, so double-check yours when you get it and make sure the laser stays in the same place no matter how you twist the collimator in the eyepiece holder. Best of luck, and I hope I'm the only one who got it wrong.
This was used on a Skyline 12" Dobsonian Telescope I bought for $3 at a yard sale. br>br>I followed the instructions in an online video and it worked flawlessly. br>Purchased a few lenses on this site and eBay, and got a close look at the moon. br>br>I'll give it a shot with the 8-inch Orion Dobsonian Telescope once I clean it up and build a stand for it. br>br>I have no complaints.
Because the laser isn't properly aligned, this product is useless as a laser collimator. I'm new to telescopes, so I ordered this before I knew what the best tools were. I made a rudimentary collimation cap to align the mirrors while waiting for this to arrive, and it got me pretty close. When this laser collimator arrived, I tried it out, and while collimating with it is simple (just line up the laser reflection in the center of the target), it threw off my rough collimation significantly: The tape circle on the primary mirror was nowhere near the center. br>When I disassembled the device, I discovered that the three set screws that held the laser in place were not even close to being the same length. They're also not adjustable because the outside of the set screw holder is covered in some kind of rubber adhesive (which isn't easy to remove anyway). br>In the end, I simply removed the laser and reassembled it to the point where I could see through it and use it as a traditional collimation device, which worked out quite well. Advantages: br>br> It's cool to have a bright laser that can be adjusted in brightness. The metal structure is sturdy. br>br>Contrary to popular belief, there are a number of disadvantages to using this product. There is no way to adjust the alignment of the laser because it is not aligned. Unless you want to disassemble it like I did and end up with a more traditional collimator as well as a laser for your other electronics projects, this is a waste of money.
The first collimator had a flaw (it had never been calibrated). Because I was dissatisfied, the seller contacted me and offered to replace the item. The second was flawless, and it appears to be an excellent tool for the job. It's simple to check a collimator's accuracy. Roll it out on a flat desk and watch the laser light. It should not dip up or down; if the light is always on the same horizontal plane, it's perfect.
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