Svbony Laser Collimator Telescope Eyepiece 1.25inch 2inch Adapter Accurate

Having had a reflector telescope for a few months now I decided that a Collimator would be a useful aid in insuring that the instrument was probably set up. Having purchased items from SVBony before I decided to go to them for this model. The collimator arrived well packed and with basic instructions as to how to use, however there are many videos on Utube showing this procedure and would recommend watching some of them as it makes understanding the set up much easier. The collimator felt well made and proved straightforward to use in fine tuning my telescope, overall a good tool and well priced for the quality. I am happy to recommend this product.

Does the job for me. Helps me get a quick collimation on my 10” Newtonian every time. Didn’t need to collimate the laser either, perfect out of the box

Great way to align lenses in optical equipment.

Does the task as expected.

Simply to use. Mine wasn't out of alignment so no need to adjust the laser via those hidden screws. Didn't resolve the issues with the Newtonian though. Sadly.

Great value hardware, but mine arrived horribly mid-aligned. Don’t expect to use it straight out of the box! Alignment was simple enough - there are countless YouTube videos showing how to adjust the laser so the beam is co-axial with the mechanical axis of the collimator. No harder than the telescope collimation task you’re trying to do in the first place. Minus two stars because this adjustment isn’t part of the product - no instructions, and the adjustment screws are hidden away under sticky sealant. Should just come with a simple test jig, a screwdriver and some good instructions! If you’re happy digging into the device to unseal the adjustment screws and do the biz, you’ll be pleased with the product ultimately.

Looks nice out of the box. Unfortunately, mine also came with appalling initial self collimation. The site listing says that the unit cannot be adjusted to achieve collimation, and indeed the adjuster holes are covered in a poured in liquid rubber. Carefully cutting out the rubber revealed three allen head bolts. Creating a simple timber V block the poor collimation was confirmed. After releasing and adjusting the allen head bolts, good self collimation was achieved. Whilst this all took less than an hour, and the purchased item is now useable, it's mighty disappointing that the primary function of the unit - good self collimation - was so terrible, rendering it unfit for purpose and in a non-merchantable quality. The laser dot is fine at the lower settings when in use. However, the dot is slightly distorted and smudged at full brightness — a lower setting for the win. If you have the time, patience and skill to create a practical V block arrangement, then it is possible to correct the poor initial state of the unit. However, if you want something that is right straight from the box, then you run the risk of getting a unit like mine: annoyingly unfit and pointless for accurate setting up of a telescope.

I was gladly surprised for the overall quality. I used it a couple of times already and my telescope is well collimated. Also did a collimation test on the laser from this collimator and it came from factory perfectly aligned. Very pleased

Handig instrument voor het uitlijnen van mijn telescoop die ik voor onderhoud even uit elkaar moest halen. Nu de alignment weer 100%.

Rotate the laser 120 degrees (1/3 of a circle) at least 6 times during collimation in case of misalignment in the eyepiece holder and adjust to the average. Results are very good.

Gör vad den ska!

Ottimo prodotto calibrazione perfetta

Pedí un colimador de luz 2'' con adaptador a 1.25''; llegó en perfecto estado, pero el láser era una raya y no un punto. Dejé la revisión que aparece más abajo e inicié los trámites de devolución, y a los dos días recibo un correo de Marisa, de RetevisDirect, que me indica muy amablemente que me lo cambian y me compensan por las molestias. Tras mandarles un par de fotos y un GIF animado como prueba de que el láser estaba mal, inmediatamente me enviaron un aparato nuevo (les pedí que por favor comprobaran que no estaba defectuoso y así lo hicieron). Me ha llegado y está en perfecto estado. Estoy muy contento con esta compra, con esta tienda y con el servicio, y la recomiendo a todos. En cuanto al colimador, tardé menos de 10 minutos en colimar mi telescopio, sin ayuda ni experiencia. Una vez más, completamente recomendable. ¡Y gracias a Marisa por su ayuda! (Cambio mi puntuación de 3 a 5 estrellas.) Revisión anterior: Yo no tengo experiencia con colimadores ni telescopios reflectores, aunque he visto muchos libros y artículos en internet sobre cómo usarlos. He usado este aparato dos días. Estoy semi-contento. El colimador no está bien colimado (al girarlo sobre una mesa el punto sube y baja ligeramente) aunque creo que tiene tornillos para arreglarlo (uno tapado por la pegatina que se ve en la foto y los otros dos por silicona) pero no los voy a usar para no perder la garantía. El láser no está bien enfocado, de forma que en lugar de ser un punto es una raya, lo que hace que en la diana del colimador no aparezca un punto sino una mancha difuminada enorme (que se sale por todos los lados de la diana). Se puede vivir con todo esto si no buscas precisión absoluta: yo he conseguido colimar mi telescopio después de dos horas de ver cuál era la posición correcta para usar el colimador, que, debido al desvío de fábrica del colimador, no coincide con la recomendada en las instrucciones. El material con el que está hecho parece bueno y duradero, tiene ocho intensidades para el láser (desde apagado, 0, al máximo, 7). Viene con pilas incluidas, para usarlo nada más sacarlo de la caja. Las instrucciones están solo en inglés, pero son claras, aunque es mejor ver un vídeo en el que te expliquen cómo usar un colimador (cualquiera) correctamente. Este aparato, tal y como me ha llegado, no cumple su misión de permitir colimar tu telescopio en menos de diez minutos, pero con paciencia sí te permite hacerlo (por eso le doy un tres). A pesar de todo, lo voy a devolver porque yo no tengo esa paciencia.