Svbony 2” 34mm SV136 Eyepiece - Full Review

[@Rotceh-r4g]

Just received various oculars from SvBony .... I am super impressed with the build quality, packaging, mailing .. . The 2" diagonal with 1.25" adapter might be another option for your viewers. It is superb value. It performs very, very well with the gold line 20 & 9mm oculars. Nice and wide views, with plenty of eye relief for eyeglass wearers. And superb value. The 4mm is a bit tight, but for a modestly priced, high magnification planetary eyepiece is worlds better than my previous 6mm plossl. Thanks for posting your great eyepiece reviews!

[@BogdanDamian]

@user-yd1zl1tv8x Thank you! Glad you enjoy their eyepieces and accessories. Most of them are good value. The 2" diagonal seems indeed to be very interesting. I'll have to check it out for myself.

[@bill5982]

I bought the SvBONY SV199P 1.25 inch Diaelectric Diagonal. (I also have an excellent 2 inch diagonal that a friend found donated for $5. It has no markings at all on it so I don't know what brand). I compared the SvBONY with the Meade Diagonal that came with my Meade 6inch Refractor. Looking at my computer desk through the Meade, the brown desk top looked gray. With the SvBONY, the desk looked virtually identical as with the naked eye.

[@noiseintheoffice]

I have the SV136 and found it miles above the 32mm super-Kellner I had previously. I enjoy the view with it in my 150mmF5. For the cost, I was impressed with the quality. I paid $100 CAD (about $75 US) for mine.

[@_stardust62]

I ordered this eyepiece, and since all my scopes are f/10 and above these kind of eyepieces work wonderfully in them. I no longer use the big short focal length dobs, i do have a C8 but my most used scope besides that is a f/11 refractor with a 2" diagonal, it gives a wide enough FOV and plays well with all my eyepieces....these 70 degree eyepieces look great under these types telescope. I have a Bresser 30mm 70 degree ep and it's my favorite right now but hoping the Svbony sv136 will be just right! 🤞

[@MrDlt123]

I got the Omegon SWAN based on your review a few months ago, and I'm glad I did. 😊

[@BogdanDamian]

@MrDlt123 Hi! I'm glad you like the eyepiece 🙂 Clear skies!

[@aranelchan]

Thanks for this review. I was looking for a 30+ mm focal length eyepiece for outreach that I wouldn't be too upset if it gets ruined by a bad visitor, and this Svbony eyepiece fits the bill.

[@oldebill1807]

Another fantastic review. (Phew, I'm glad that my deciding to get the Omegon SWAN earlier this year remains valid.) One additional thought, please be sure that your telescope can accept 2-inch eyepieces. While I expect this is mostly obvious, I came to this realization AFTER receiving my eyepiece, I now have a 2-inch diagonal for my SCT. I love the views and particularly the immersive experience.

[@gregy.]

Your videos have good production quality Bogdan! 👍

[@bill5982]

I bought a 25mm Meade Series 5000 HD-60 6-Element 1.25" Eyepiece for $90 which has incredible sharpness. I wanted to also get a 30mm but it is $300.

[@sebcharette5401]

it's a REALY good tying that You presised the difference between normal or mathemathical "aberation" and the result of a bad optic, it's rare. many persons think an eyepiece is Not good by ignorance .for exemple, " à 60° eyepiece is better than a 72° because show les coma at the edge ".You know how eyepiece astigmatism pump-up the normal coma.tank You for Your good review. clear sky.

[@moonmonkey9595]

Good afternoon Bogdan you talk about chromatic abboration ok this review just to clarify you weren’t perhaps meaning Coma ?? Great review buddy good to see this one out in the wild

[@BogdanDamian]

@Moon Monkey Hi and thank you! I did mean chromatic aberrations coming from the less than perfect optical lens elements inside the housing. Coma is also present, but that comes from the telescope's mirror.

[@MountainFisher]

I have one Svbony eyepiece, a 32mm for $36 and I haven't used it in awhile. In my F5 it is just too low power and having a 25mm ED Starguider precludes my using it in my 102mm Sky-Watcher F12.7 Mak as it is just fine.

[@khabbabbabikerelsiddig8906]

Thanks, it's good and fair review, I own this eyepiece already, and as you mentioned the problem is when it comes to edge of field of view, but you can live with it if you look to the price.

[@hakman239]

Worth mentioning svbony has a 15mm eye pice with adjustable eye cup it’s sv154 15mm I believe it’s an improvement of the redline

[@trent3416]

Love your videos. Thanks for this one. There's a 2", 26mm svbony eyepiece that I've seen on ebay. Are you familiar with that one?

[@BogdanDamian]

@trent3416 Glad you enjoy them! Unfortunately I didn't had the chance to test the SV154 yet, but I heard from multiple sources that it is better than the SV136 including sharpness.

[@trent3416]

@@BogdanDamian Thank you! 🙂

[@trent3416]

​@Bogdan Damian just ordered the sv154. I only have the 25mm that came with my 8" classic skywatcher dob to compare it with, so I am easy to impress. I will let you know how it works out, none the less. 😊

[@BogdanDamian]

@trent3416 Cool! Looking forward to hearing your thoughts on the sv154. Clear skies!

[@cienciapopular8485]

You are good communicator, congrats. Have you tried the ones called Angeleyes? They are cheap on Ali Express but seem to be good. Any thoughts?

[@BogdanDamian]

@Ciencia Popular Thank you! I haven't had the chance to test them yet, but I have read a couple of good things about them. They aren't perfect, but for the money they look like a good choice. I've put them on the list of items to review in the future.

[@dougrennie4901]

I have AngelEyes 12mm, 16mm, and27mm. All are Outstanding EPs: sharpness almost to the edge, superb contrast. 1:51 1:53

[@hakman239]

Can you review the svbony sv154 26mm 70°FOV eye pice it’s 2 inch can’t find any videos

[@BogdanDamian]

@hakman239 I've put it on the list of eyepieces to review.

[@hakman239]

@@BogdanDamian I got mine today but it’s snowing here in the uk

[@BogdanDamian]

@hakman239 Sorry to hear that. Hopefully it will get better soon. Let me know how you like the eyepiece once you get to test it. Clear skies!

[@Astronurd]

The best 2" eyepiece in this range is the APM 30mm UFF 70 °. It's much better corrected both on axis as well as the outer field and edges than the Swan and most others.

[@k.h.1587]

This type of eyepiece is best used on slow focal ratio scopes, cassegrain and long refractors, not fast dobs. Same goes for the swan.

[@ColdWarWarriors]

Bogdan, you are using the Luminos in a fast F ratio Dobson which is less than ideal for this EP, better suited to F10 SCT's

[@BogdanDamian]

@ColdWarWarriors I believe you are right. Unfortunately I didn't have an SCT at hand back when I reviewed the Luminous to see how it would perform in a slow telescope. But I made a note to myself to revisit the Luminos series in the future and test it on slower telescopes as well.

[@cattaraugustonawanda4426]

SVBONY has some nice products and some not so nice. Their quality control seems to leave a bit to be desired. I have a 503 ED80 scope that is nicely built but the handle that belongs on it is extra $ and with the finder scope dovetail location being a bit problematic. I have sent back a couple of their products due to problems and another arrived today that will be returned to Amazon. That eyepiece looks nice, but I wonder if there is a competitor's product of better quality for similar price?

[@BogdanDamian]

@Cattaraugus & Tonawanda I don't know of any other 2" eyepiece with similar specs that would be better. The sv136 even though it has it's flaws, the price per performance is excellent. I hope to get the chance to test the 503 series from Svbony soon, as I'm very interested how they compare to other similar refractors.

[@cattaraugustonawanda4426]

@@BogdanDamian I have only used my 503 80 a few times and like it so far. I have it mounted on a CG-4 GEM and my beginner eyes are impressed with what I can see. A much more experienced friend was very impressed when he looked through it and tried a camera on it. The only problem I have had was the focus assembly rotating under the weight of an 8X50 finder. I plan to make a mount for a quick finder and try that and maybe machine a custom mount (second try) for the 8X50. My only regret is that I didn't go for the 102mm 503. Much nicer than other scopes of similar aperture I looked at. BTW Thanks for your efforts on You Tube.

[@edf2953]

Nice review Bogdan. Thanks for all your fine efforts. Ed

[@BogdanDamian]

@Cattaraigus & Tonawanda Thanks for sharing your experience with the sv503. It seems to be a pretty good refractor in general. I also thought of going straight for the 102mm version as I want as much power as possible for planetary observations. Clear skies!

[@ishanr8697]

My current widest eyepiece is the Explore Scientific 24mm 82 degree. When I go wider, I'll probably go Televue

[@hakman239]

Does the fuzzy parts on the side bother you think it’s putting me off is it noticeable on DSO or more with planets

[@BogdanDamian]

@hakman239 Definitely more with DSOs than with planets, especially if these appear big in the FOV. The farther away from the center of the FOV you look, the less sharp the image becomes. It's not a lot, but definitely visible if you pay attention to it.

[@hakman239]

@@BogdanDamian did it put you off? I’m concidering the sv154 not seen any reports of fuzzy at the edges with that

[@BogdanDamian]

@hakman239 Yes, I didn't like the eyepiece that much. In my opinion it's worth spending a bit more money and getting a better eyepiece like the swan series from Omegon. But to be clear, the view is not fuzzy. The sharpness suffers a bit as you move off center. Not by much, maybe 10% or so, but it's still visible.

[@hanamichizakuragi5021]

Bogan damian ,, hello can you please review the svbony 2’ 26mm 70’ fov - want to hear your opinion -

[@BogdanDamian]

@hanamichizakuragi5021 Hi! Thanks for the suggestion. I put the eyepiece on the list with items to review in the future.

[@uhohDavinci]

I'm surprised you feel you got better performance out of the Omegon Swan, as they are the exact same optical design as the SvBony. Its the same series of 5 element Erfle design that has been floating around for years.. Agena SWA, Meade QX, William Optics Swan, Omegon SWA, etc... They all perform very poorly in shorter F-ratio telescopes, anything under f8, you get significant field curvature and astigmatism. At F/5, you're only likely to get 50% of the field in focus at one time. The only difference between them is build quality. Optical performance should be if not, entirely identical.

[@BogdanDamian]

@uhohDavinci I was surprised by that as well. My theory is that even though the SWAN and the SvBony share the same optical design, the lenses themselves are manufactured with different quality standards in mind. To my eyes the SWAN's lenses seem to correct the incoming light a bit better than the SvBony. This and there might be differences in the coatings applied to the lenses. Both this points would be enough to explain the visual differences in the images produced in faster telescopes.

[@hakman239]

Would it be sharper in a 6 inch dob

[@BogdanDamian]

@hakman239 I don't believe the aperture size will make any significant improvement to the sharpness.

[@ColdWarWarriors]

Thanks for the review, I will give it a miss after watching this. I have several EP's that have poor off center sharpness and I find this really annoying given they are wide field EP's, if you want edge to edge sharpness you will have to pay up and buy a premium EP.

[@ADF_Cable]

Yep, tv all the way. That nagler is bloody expensive though!

[@deltacx1059]

6:59 I don't think double the price is justified if the performance really is that close, not everyone has bottomless wallets.

[@hakman239]

This is what somone of a Facebook group said about the sv136 34mm and sv154 26mm I had a clear night last night. At f/10 the outer viewing area of the 34mm definitely has issues. It looks like the stars go out of focus towards the field stop. If you try to focus a star to pinpoint at the edge, the stars at the center go out of focus. Compared to other eyepieces of similar focal length the view through the SvBony 34mm appears dimmer. Cheap coatings? Who knows. There's better eyepieces than this one. I also tried the 26mm and that one performed much, much better at the edges - better contrast and overall sharpness. I was able to see over two dozen galaxies with it last night. The 26mm is a decent budget eyepiece and the 34mm is a dog (poor performer) in my opinion.