SvBony Eyepieces

[StuTodd]

No Richard.

I got the others and if they're any use, I might try a set of those just to see.
The EPs haven't arrived here as yet.

[brian nordstrom (As avatar)]

Awesome , looking forward to the results

Brian.

Originally Posted by StuTodd

Bought 2 sets off eBay for NZ$96 which is cheap.
One for myself and one set for N1.

We will compare through different scopes and share the findings!

[StuTodd]

The EPs arrived yesterday and appear to be tidy and solid. However, right on cue, the short term forecast is (unsurprisingly) rain, snow to 600m and rain so will have to delay the review!

[brian nordstrom (As avatar)]

I feel for you , but looking forward to the review , what was the total cost and how many did you get ?
I have a young friend just starting out and I gave him a 32mm silvertop and 15mm cheapy to get started and 3 of these might just be the ticket .

Brian.

Originally Posted by StuTodd

The EPs arrived yesterday and appear to be tidy and solid. However, right on cue, the short term forecast is (unsurprisingly) rain, snow to 600m and rain so will have to delay the review!

[StuTodd]

I got 2 sets of 3 Brian, one for me and one set for N1 (Mirko).

They are the yellow top 4, 10 and 23mm 62° aspheric EPs. The body seems to be plastic but that doesn't worry me. The test will be in the C11.

Mirko will test his in different scopes too and we'll see what to avoid or not.

All up, NZ$83 plus $4 postage.

Stu

[N1 (Mirko)]

Just spent an hour with these guys, 8" f/6 dob. Just some quick impressions:
23mm: usable on axis and up to 50% out from there to the fuzzy field stop. Beyond that: seagulls. Bad internal reflections past the field stop.

10mm: the best of these three, almost in a different league. Good to about 80% out from centre. Ok - ish beyond that. Sharp field stop. The lightest and smallest of these three.

4mm: Seeing not good enough for details but looks promising on axis but the opposite from 50% on out. Colour rather than coma.

Will add more to this later

[Rkonrad (Richard)]

The ones I used to have had a better field that a good Plossl but I did not have a 4mm in my Celestron X cell lx (60 deg) to compare to a reasonable eyepiece only a 5 , the 10mm and 25 did not work for me but as mentioned at that price even if one works its ok
These are the yellow top, wonder what the red top will do
By the way I took the 10mm apart one single and one cemented double all glass

[StuTodd]

Fresh from a dark and stunning session...

I honestly couldn't fault the 23mm or the 10. The 23mm was fantastic in a C11 at f10. Globs excellently defined, M83 was stunning and Jupiter was OK but low down at the time. For $15, get them.

The 10mm didn't give CA or internal reflections, but I used it on fairly dim objects, yet to try on bright stuff like Jupiter etc.

I didn't try the small EP thanks to the 23mm!

[dpastern (Dave Pastern)]

Originally Posted by StuTodd

Fresh from a dark and stunning session...

I honestly couldn't fault the 23mm or the 10. The 23mm was fantastic in a C11 at f10. Globs excellently defined, M83 was stunning and Jupiter was OK but low down at the time. For $15, get them.

The 10mm didn't give CA or internal reflections, but I used it on fairly dim objects, yet to try on bright stuff like Jupiter etc.

I didn't try the small EP thanks to the 23mm!

a long focal length SCT will hide their optical blemishes...try them again in a f5/f6 scope...they'll be horrible. Still, cheap public eyepieces, you can't really worry too much if a naughty kid ruins them!

[StuTodd]

Originally Posted by dpastern

a long focal length SCT will hide their optical blemishes...try them again in a f5/f6 scope...they'll be horrible. Still, cheap public eyepieces, you can't really worry too much if a naughty kid ruins them!

What's the point of that then?
I'll use them in the C11 and enjoy great views.

[Rkonrad (Richard)]

Originally Posted by StuTodd

What's the point of that then?
I'll use them in the C11 and enjoy great views.

100% if it works for you that is all that counts and they give wider FOV than a plossl

[dpastern (Dave Pastern)]

Originally Posted by StuTodd

What's the point of that then?
I'll use them in the C11 and enjoy great views.

you didn't seem to get my point - the eyepieces have issues, but they are masked by your setup. Just cos you can't see the issues, doesn't mean they aren't there!

[Merlin66 (Ken)]

Guys, guys,
I never thought for one moment that these $3 eyepieces would be replacements for your TV Plossls or Naglers.....

These looked like viable alternative eyepieces for the novice or for Star Party giveaways.

[dpastern (Dave Pastern)]

Originally Posted by Merlin66

Guys, guys,
I never thought for one moment that these $3 eyepieces would be replacements for your TV Plossls or Naglers.....

These looked like viable alternative eyepieces for the novice or for Star Party giveaways.

yup. That's why I also said:

"Still, cheap public eyepieces, you can't really worry too much if a naughty kid ruins them!"

[Shasta55 (Chris)]

Well, this thread is a little dated and I'm a 1 year newbie, but here goes. I have a 102mm refractor and after a few months found the 10& 25mm's supplied pretty limiting. So I watched just about every Youtube clip about EP upgrades before ordering an SVB 20mm/68deg EP. I was really impressed with the sharpness ind immersive feel so I quickly ordered the 9mm, then 6mm for planets which were good but not quite as impressive due to the CA that comes with the scope. I've since bought their 15mm 70deg model and it's amazing - to me anyway. They are value for money and there's a well priced Au based seller where you can get good discounts (15-20%) on follow-up orders. All shipped quickly ex Sydney. Not mentioning the site or seller -not sure of the forum policy but anyone can PM me if they want.