SVBONY Eyepieces 4mm Telescopes Lens Wide Angle 62 Degree Aspheric Eyepiece HD Fully Coated Telescope Accessory for 1.25 inches Astronomic Telescopes

The difference between this and my stock 25mm Kellner is night and day. Clear, crisp views made setting up my finderscope so much easier. And at this price I got a hell of a lot more than I expected. Seems to be built well and solid. I don’t know about more expensive eyepieces but I have to say this one is is worth every penny. Update: this has become my go to eyepiece. The wide angle makes tracking down object much easier. Yes there is aberration and halos around objects and no flip up eyecup. But it totally beats my stock 25mm. If you’re buying your first telescope I highly recommend this as a “starter” upgrade. For the price and night and day from your stock kellner this will do it. And you can buy replacement eyecups if you need

I picked up a Meade ETX60 at a thift shop for 10 bucks and it did not come with eyepieces. Bought this set and wow was I pleased! Pairing these eyepieces with a barlow lens really opened my eyes to a wonderful world of imagery!

With the current gold line and red line sets I'll call these the bronze line. Basic and cheap but more below. I am still learning collimation but I used a svbony laser collimator and supplied collimation cap and appears to be focused... They seem good, better than the 10mm and 25mm my virtuoso gti 150p came with. No eye cups. Didn't realize until I got them. Bought as 4mm 10mm and 23mm set, came in separate boxes In a plastic bag with dust caps on both ends. The 4 mm I didn't get the test during night but during day it seems ok for price. Dim and a little out of focus but might be me or the limit of my equipment or how i tested it. I did collimate but not going to knock it yet. The 10 mm was nice during night and day use, I have very little experience with other eyepieces other than the 'scope supplied 10mm and 23mm. Great views of full moon The 23mm was odd, mine has a part of it that screws loose or tight at where you place into the 1.25" focuser. The silver part unscrews and I don't want to fully unscrew and damage or ruin it. Not sure if designed like that or a quality control issue. Works great other wise. Lol, turned it tight and it seems fine. Nice view of full moon. Two pics are one photo, but zoomed in on the second one. I just held an s20+ up to eyepiece. Don't remember which eyepiece I used, 10mm or 23mm might have used a 2x svbony Barlow. Second picture is an edited picture of the moon. More contrast and sharper to show details. Seems like a good starter set. Recommended brand. Getting the upgraded and seemingly well reviewed red line set soon..

Really surprised at the overall quality of this very inexpensive eyepiece! Really good apparent field of view (AFOV) of 62 degrees and sharp stars across the entire field. Only thing that could be better is the eye relief, to get the full AFOV your eye has to be very close to the lens. However, this is the 4mm which is a high power eyepiece and the eye relief for this level of magnification naturally won't be good. But still, the nearness of my eye to the main lens is not THAT bad and again, very pleased with this product.

Great view for the money.

This eyepiece is being used interchangeable with my other eyepieces on my 105mm refractor, 105mm & 150mm SCT, 90mm MCT and reflector... Wanted a 25mm Aspheric, (have Plossl, Orthoscopic, Kellner). In some cases it is better than the rest in others about the same, (good for looking at stars that are close together). Higher quality than the price would suggest.

This can suit your telescope well, high power eyepieces are a bit better than Barlow lens for clarity and keeping the weight down, especially for planetary use. It suits my 115mm refractor. Check the max useful magnification of your telescope before you buy a high power eyepiece like this one. I like the wider field of view and the low cost of this eyepiece. I have an 8mm wide field planetary eye piece from Orion which has better set of optics and better quality but costs 6 times more than this one. This one does seem to introduce slight aberration and is not as clear as the Orion. However, the 4 mm gave higher magnification when I needed a more zoomed in view of the Moon, Jupiter and Saturn. Moon filter is a must of course as they reduce glare. I have not tried this on DSOs as I stop at the 8mm magnification for them. For terrestrial use in the daytime it seems to be pretty good upto 500 yards, not really as good quality wise for the night sky because of the chromatic aberration it introduces always, but given the low cost it has a place in my set of eyepieces and it will be an ok choice for amateur astronomers. The chromatic aberration is significant even at the day/night boundary of the moon, so it will come in the way of observing crater details. So this eyepiece is nor suitable for those boundaries where the aberration becomes significant. If you have a telescope bino viewer, you need a pair of these 4mm ones, as it is expensive to get higher quality ones. I recommend getting these for planetary use. This is a good buy, overall, 3 stars, I recommend it as long as you are not looking for a high quality image as the difference will be significant, the Orion one will be much better and a 400 dollar eyepiece from TeleVue will be much much better.

I found a mediocre telescope at a second hand shop for 10$. It was a Celestron Power seeker 127. I know nothing about telescopes. Or know just enough to know I don't know. I didn't even realize the "big shiney fancy telescope" I found didn't have a lense🤦‍♀️, at least not till I bought it. Not wanting to spend a ton on a lense set to find something else was wrong, I did a little research and found something that suggested 4mm as an ok size for something like this. This lense was one of the cheapest and not horribly rated. I'm shocked at how clear my view was of the moon. For a foggy night, in the city. Wind blowing so hard it was wiggling the telescope. Overall a terrible night to try it but my 5 yr old is calling the shots and she could see the moon from a window inside so we had to test out the Christmas gift because according to her it was clear enough, I've added a photo of how "clear" it is tonight. This is what we saw with this little thing on such a horrible viewing night.

Bought to use with a 5" Newtonian Reflector. They add a lot more choice when viewing planets and celestial objects. The clarity is superb, as is the quality of the eye pieces. They are far better than the telescope I am using them in, so I guess I am going to have to buy a better one. The only way these could be improved is if they came with a storage case.

pas très lumineux

Excellent lens. Worth the money spent

Como na descrição recomendo

Este set de oculares para telescopio SVBONY me parece una gran opción para reemplazar los oculares de entrada con los que un telescopio para iniciar podría venir; son ligeros pero de cuerpo metálico y detalles en goma; son de medida estándar 1’1/4 de pulgada por lo que su compatibilidad con gran variedad de telescopios no será un problema Cuentan con una cuerda interior para añadir filtros de la misma medida y una cintura moldeada en el cuerpo metálico para fijarse con mayor seguridad al telescopio o a los accesorios; son totalmente compatibles por ejemplo con la lente Barlow 2x de SVBONY por si se quiere añadirla o ya se tiene una Un punto a destacar es que son oculares de campo amplio, se menciona 62 grados ; comparados con oculares convencionales las observaciones que ofrecen no se parecen en absoluto; después de usar dicha configuración de ocular no querrás utilizar otros ya que en los convencionales (sobre todo cuando aportan grandes aumentos) observar a través del ocular es cansado y difícil por el pequeño diámetro de la lente pero en los de campo amplio resulta muy fácil observar por periodos más prolongados. En las últimas fotos comparo unos oculares de entrada de 20 y 4 mm contra los oculares 23 y 4 mm de este set; la diferencia en el diámetro de la lente a través de la cual observas es evidente y ello se traduce en una mejor experiencia de observación Con respecto a la calidad de imagen, un telescopio de entrada mejora mucho su potencial al reemplazar los oculares por otros de mejor calidad y este set me parece muy accesible en precio con respecto a lo que ofrece; de igual manera la forma asférica que menciona el ocular puede potencialmente corregir aberraciones cromáticas inherentes al diseño o construcción del telescopio, por ejemplo en un reflector con espejos esféricos En conclusión considero que por el precio este set puede mejorar la observación usando un telescopio de entrada, aportar variedad si tienes pocos oculares y no quieres invertir mucho o si nunca has probado un ocular de campo amplio