SV Bony Aspheric Eyepiece Pros and Cons
HTML-код
- Опубликовано: 30 июл 2020
- These SV Bony eyepiece are a exellent low cost choice.
Thank you for watching my video don't forget to subscribe for loads more astronomy videos for the beginner.Take care and clear skies,
SVbony eyepiece disassemble • SV Bony Aspheric Eyepi...
• How to break a Telescope!
• Problem solved
• Jupiter and Saturn thr...
• The moon Venus Beehive...
The 10mm Eyepiece in this video:
www.amazon.co.uk/Svbony-Eyepi...
Thanks for a great review. I ordered the 4, 10, and 23mm eyepiece set. I just came in the house after viewing Jupiter, Saturn and Mars and the views through these eyepieces is amazing for the price! They have greatly increased the performance of my old 1967 Sears 60mm Refractor telescope. I highly recommend these eyepieces.
Your welcome friend. Yes I agree, they are amazing for the price.
These eyepieces are very bright, very light, with a wide field of view. But from one to another there are small differences, so I bought 3 of 4 mm and chose the one that seemed best to me. With a 200 mm diameter telescope and with good seeing I have seen the red spot of Jupiter with enormous clarity, for example, something that I had never seen as well with the classic barlows, heavy eyepieces, etc. I believe that their lenses are not made in the usual way, of polishing them, but by stamping with tungsten carbide molds, a technique developed for smartphone lenses etc: the expensive and difficult thing is to make the mold in tungsten carbide, then they make a lot of lenses at a very low price for stamping
Thank you for the review..i ordered 10mm and 23mm Aspheric svbony..cant wait for these to arrived with my telescope
Hello pulkin. Your more than welcome. They are great for the money.. Hope you enjoy your new telescope and eyepieces.. Clear skies :)
Thanks for making this video. Helped me a lot.
Your welcome friend! Really glad you got something out of it, apologies for the quality of the video ,will be getting better equipment soon.
Stay safe.
Very helpful video. Thanks for making.
Your welcome. Pleased to hear you found it useful.
Thank you, this video made it very clear. I am going to buy the 10mm now!
Your welcome friend, for the price you can't go wrong.
@@smalloptics753 have you made a video yet on the specific views they produce? I know it’s been quite cloudy in the Uk the past couple of months.
@@olliecrabtree Hi Ollie, in this video I am using the 23&10mm to view the planets, ruclips.net/video/_rQ6iAb5WCw/видео.htmlbut a camera lens never does justice to the views you actually get when looking with your own eyes, which is a lot better.
@@smalloptics753 thanks I will watch!
Very helpful video; thanks. i bought a 26mm 2" SVBONY eyepiece a month ago and have enjoyed great wide-field results. i just picked up a 4mm and plan to use it tomorrow night for planetary observing. It was like $13 US. If it sucks, then I'll just pick up a decent Orion eyepiece instead and chalk the purchase up to experience.
Your welcome friend, I'm glad you found it of some use. I'm quite impressed with the svBony range, hope you have fun with your purchase.
Cool eyepiece review, I especially liked how you stripped the lenses out of the modified achromat eyepiece to demo the arrangement on the SV Bony. I used to be mad about ortho's, but the older and worse my eyes get the more important eye relief becomes lol
Hey Chris! Thank you. Yes, eyesight is becoming a problem for me too now , I'm ok at the eyepiece, but when I look at a star chart or something the specks have come out, then I usually forget to take them off again and either bang them on the eyepiece wich makes me jump every time or woder why the focus has gone to pot all of a sudden lol.
I have the same eyepiece set but tagged in this case by Meade, and I think it is a good economical purchase to improve and/or complete the options offered by the entry level telescope supply. I agree with the review. I think its wide field stop is surprising, which contributes to its wide field of view, with reasonable correction. Honestly, I thought that all the elements were made of glass (call me naive), but from the quality of the views they seemed so to me. The eye relief is also quite comfortable, if you don't wear glasses. Good detail the explanation about the 4mm, a kind of 10 or 12mm barlowed eyepiece, this is without a doubt the weakest element in the pack, certainly, and it still works.
These are really good eyepieces for the price.
Really good review. I am thinking about upgrading to a SVbony 23mm eyepiece. Will the eye relief be suitable as I wear glasses? Keep up the videos.
I ordered them, was amazed by the performance of the 23mm and 10mm. Not much with the 4mm. But after precise Collimation of the 127mm BJ reflector I was amazed how the 4mm performed
Is it better than the 4mm supplied with the telescope?
@@ulisessolis3182 sure it is.
Thanks.
I ordered the 10mm and have just sent it back. I found it difficult to achieve focus with it which meant I got a headache when viewing. The Aspheric lens didn't appear to work either because anything off centre was out of focus. The lack of eyeshroud I also found annoying. Perhaps I got a duff one but I was quite disappointed with the eyepiece. The 10mm that came with my telescope performs better.
I bought 2x of the 23mm to use with a bino attachment, I'm super interested to see how they perform.
Well Jason after hearing your and others opinions on these eyepieces I have just bought a set of them. I will probably bin the 4mm or dismantle it and make a collimation cap. If the 10mm is decent then it’s worth the money for that alone. I was thinking maybe the 4mm would be okay in my f12 Maksutov but at a focal length of 1500 that would be 375x 😵💫.Clear skies
Hello Ian.. The 10 and 23mm are great value for money, it's a shame the 4mm lets them down a little, but it is still usable but does produce a lot of false colour.
stick that 4mm onto a long focal length telescope, and it performs pretty good for how much was paid for it!. I paid 24 bucks for all 3 with free shipping off ebay, and the 23mm was worth the price by itself!.
Hi David. These are great eyepieces for the price.
Hey, thank you for a great review, do you recommend these eyepieces for a f/5 telescope? I've red from some pages that these eyepieces are not that good with a f/5 telescope, please let me know if its worth spend money on them.
It would have been nice if you compared them with other types of eyepieces say a Plossl or a Kellner. Also talk about field of view, chromatic aberration and edge sharpness.
Svbony have a store on Aliexpress and I bought the 23mm and 10mm for AU$16 each. Also did a test in comparison with a standard Celestron 20mm and their Svbony 20mm redline eyepiece (AU$48). No question the build quality of the Redline is superior and it's more comfortable to use, but the 23mm aspheric isn't too far off in the viewing quality. You lose some AFOV and edge sharpness, it's a bit less forgiving on eye movement, overall though it's still much better than the standard Celestron 20mm. I mean at those prices you're basically getting 2/3rd's the view quality as the redline for 1/3rd the cost.
great detailed review of these eye peice. is 4mm plossl eye peice has better clear view than svbony 4mm
Thank you friend. The problem is with ANY short focal lenth eyepiece unless you are paying a considerable amout of money for it I would stay well clear. yes the plossl would probely be better, but my advise would be to use a good quality barlow over any cheap short focal lenth eyepiece.
@@smalloptics753 thanks for the reply.
They tend to have a wide field of view correct? And could you say something about them being aspherical? What does that do exactly?
Their Zoom lense was great (7-21mm)
Not considering the fov , Are these better than the brandless generic Chinese plossls sold by different sellers?
Good quality plastics are good. You just need a reliable producer. You can certainly get lab equipment thats plastic and optically highly rated. But for 20quid its a risk 😅 these days glass is just as suspect though.
Ok after a quick look on the bay im seeing a new style of svbony lenses. The red ones. And the orange ones im seeing available as unfinished parts.
So it seems svbony changed factory and the factory owner kept printing. The quality will be sub par. Better to go for the new model..almost as cheap.
Great review! Are the lens edges blackened from factory or you did it?
Thanks pal, they are blackened as standard.
@@smalloptics753 I just received the 23mm ones, they look promising, but had a tiny scratch on the front glass out of the box :(
You need to turn up your volume a lot !!!
Would these eyepieces correct spherical aberration on a Astromaster 130 newtonian with spherical mirror?
Can we use this for home made telescope
Hello Subappriyan, Yes they will work fine with a home made telescope :)
@@smalloptics753 I bought a 700mm focal length optic lens which can be used for astronomy DIY and this svbony eyepiece can it be used
23mm works better in slower scopes from what I heard
I've personally not really noticed to be honest buddy...I'll test the theory out tonight :)
Hi!, the 4mm it's more dimmer that any other 4mm EP?
Yes you do lose a lot of light with most cheap short focal lenth eyepiecs.
@@smalloptics753 which one do you recommend?, ore it will better to have a good sleeper 6mm EP?
@@Frambhueee The light loss has nothing to do with the eyepiece. Whether it was a 4mm Aspheric eyepiece, a 4mm Plossl or a £200 4mm eyepiece, they would all dim the the view.
The dimming is a matter of physics, the higher the power you go, the dimmer the view because the Exit Pupil decreases and the only way around it is to buy a much larger telescope.
A 6mm would give a slightly brighter view but its hard to recommend anything without knowing what telescope you are using and its focal length and aperture.
@@allnamesaretaken hi!, I have the MEADE adventure scope 80mm 400mm focal length
@@Frambhueee That is the same telescope as the ST80, with a 4mm eyepiece it gives a 0.8mm exit pupil which should be fine but because your telescope is a fast F/5, the dimness you are seeing is likely chromatic aberration which is common in fast refractors at high powers.
You can test this yourself, some objects will have a purple halo or a rainbow effect or a soft dirty yellowish colour overlaying the object, once you see it, you can't unsee it. Its mostly obvious on Jupiter, Venus and the moons limbs and bright stars. Another test is to look at a chimney or telephone pole, it will have a extra colour on its sides and corners.
It doesn't bother some people, some people don't see it or don't see it as much and its well known that the ST80/Adventure Scope 80 have it and becomes unbearable for some people above 80X. That's not to say you cant go higher but the higher you go with a fast refractor, the more obvious it'll be. There is nothing wrong with your telescope, its just one of the drawbacks of a fast refractor.
Put another way, if your 80mm refractor was an F/8 or above (longer focal length), at 100x the image would be sharper/clearer.
A Yellow telescope filter would filter out the blue colours and gives everything a yellow tint, It won't be perfect as nothing is going to be at F/5 but might be something to consider trying.
The 4mm 62 degree eyepiece is known to also be the worst out of the 3 eyepieces, full of false colour (the others being the 23mm and 10mm). I have used the 4mm and thought it was fine but this was in a slow F/11 refractor. I only bought the 4mm to complete the set as i have far better eyepieces, they are so cheap that if they don't work out, you haven't really lost much.
There are options for all budgets and there is one thing you don't want to do is to be rushing out and buying eyepieces that may prove to be useless.
Have you considered a zoom eyepiece? paired with a 32mm plossl or the 23mm 62 degree eyepiece and a 2X barlow lens can be a good combination. Or, a 32mm plossl or the 23mm 62 degree eyepiece with a 9mm 66 degree eyepiece with a 2X barlow lens.
Are svbony 10mm and 23mm better than 10mm and 20mm that comes with celestron astromaster series?
All eyepieces that come supplied with entry level telescopes are usually ok and will certainly get you going, but I would advise upgrading to something slightly better, especially the 10mm. As far as, "are the SVbony being better," they will give you a bigger field of view than the celestron range, and a slightly brighter image due to the Aspheric nature of the eyepiece, meaning it uses less lenses than a standard plossl which has 5 lenses. I would recommend giving them a go, for the price you can't go wrong. Hope this helps making your decision.
@@smalloptics753 for my home made 114/900 reflector they will be ok or not?...can you recomend a good 4mm eyepiece for 20$.
@@jaeennur9858 Yes they will work well your reflector. As far as cheap 4mm that are any good, is a rare thing. The best one I've found for that price range is by "Revelation Astro," but my advice would be to spend the money on a barlow lens instead, you have to remember a 4mm eyepiece in a 900 telescope is going to give you a magnifcation of 225x that is a lot for a 114mm scope. The field of view will be small and have bad eye relief with a cheap 4mm. On the other hand a 2x barlow will give you 180x if you use it with a 10mm eyepiece in your telescope which is plenty of magnifcation for most things, and the eye relief and f.o.v will stay the same.
@@smalloptics753 thanks for the advice..
@@jaeennur9858 Your welcome friend.
Do you think these are better than Ramsdens and Huygens?
Hello there, I would say yes, purely on the fact that the Svbony;s have a much better F.O.V almost twice as much, also Rams/Huy's are not much use on short focal ratio telescopes unlike the Svbony's that will work with almost all telescopes designs and focal ratios. The Svbony Aspheric range are not the best eyepieces in the world but they perform great for the money.
I agree... Apart from a larger field of view, I think that the field correction is quite acceptable considering its price, and also its eye relief is more comfortable, even with the 4mm eyepiece, which surprised me by the transparency of its view...
Do you play the guitar?
Hello Digital Studio. I guess you noticed my nails.. Yes guitar Is another passion of mine.
@@smalloptics753 we share two passions, music and astronomy.
Le faltó que hubiera hecho una demostración en un telescopio 🔭 de cada uno de los oculares, con imágenes de la luna, hace unos meses compré un ocular: Aspheric Eyepiece 4mm 62grados poco lo utilizo debido a que se ve desenfocado no sé si es debido la distancia focal de mi telescopio 🔭 mi sugerencia para las próximas; utilizar las imágenes que se ven con cada ocular ésto ayudan así no entendamos el idioma. Gracias por el vídeo.
Tienes que probar con uno de 25 mm primero .
4 mm es para alta magnificacion .
Para saber cuánto magnífica debes dividir el largo focal de tú telescopio dividido el largo focal del eyepiece.
Ej : 900 mm focal length/ 4 mm igual a 225 magnificacion .
Por eso ves la imagen distorsionada.
Prueba con un eyepiece de 25 , 30 o 40 mm y vas a tener una imagen nítida
Avoid the 4mm at all cost! I ordered the 4mm and tried it on a 102 mak, 114p Newtonian, and a 150p Newtonian. The planets look horrible. The chromatic aberration made them virtually unseeable. You could make out the bush’s shape of Jupiter and Saturn but the chromatic aberration allowed for zero detail to be seen. The regular modified achromatic eyepieces that came with the telescopes were far superior. I can’t speak for the rest but the 4mm was a waste of money
Is the magnification good, and is the chromatic aberration the only major issue?
@@danidunn4044 do not buy it trust me. It looks horrible. The chromatic aberration covers the entire target so instead of seeing detail on Jupiter or Saturn, you’ll just see a ball of colours like red green and yellow. Magnification does not matter
@@danidunn4044 oh and also the eye box is terrible as you have to shove your eye right into it plus the field of view is tiny. Just whatever you do, do not buy it. It’s much more worth it to save a bit and buy a decent one for 50 euros
@mustang5132 ok, what do I do if I already bought it?
@@danidunn4044 return it if you can. Only thing it’s like 4/10 for instead of 1/10 is the moon. What kind of scope do you have. Maybe I can help you find something decent for a decent price to replace it
Kupiłem te okulary na próbę. Miały nazwy Celestron i Eysdon . Były chwalone na filmach You Tube. One są zwykłymi śmieciami . Szkoda wydawać na nie nawet 1 centa . 75%pola obrazu zamazana i nieostra . Może pod nazwą SvBony mają dobrą jakość . Może SvBony ma dokładniejszą kontolę techniczną
You'll find they made of plastic after some use - I accidentally scratched 10mm, and my 23mm is showing lots of small scratches because I wiped it few times with my t-shirt. So internet forums don't lie, really.
te okulary to śmieci.
I wish I'd have seen this last month, I just got the 23mm and 4mm and after tonight's first viewing I am wholly disappointed!
The 23mm is worse than the 25mm that came with the scope due to the spherical aberration, if the subject isn't fully centred it gets distorted and the 4mm is just junk! I can't even get it focused and if a the star I'm focusing on isn't centred perfectly it has feathers stretching to the edge of the view!
Oh well, I suppose you get what you pay for.
bo tanie mięso jest da psów. Poland . Dziękuję za prawdę
There so cheap and my budget for eyepieces is no less than $30 USD
They are great value for money, I use the 23mm & 10mm all the time. :)
@@smalloptics753 cool and I suggested my grandma get the 10mm for her cheaper scope with the 0.965 adapter and came across this vid and their not bad eyepieces to be honest!
The 4 mill is garbage the 10 and 23 are superb for the money!