SVbony 8mm plossl 207 SPL

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Jones
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SVbony 8mm plossl 207 SPL

#1

Post by Jones »


20220121_132608.jpg
Have had a lot of their threaded adapter rings. Finish is nice and they always threaded with other SV and other brands of rings. There are not many 8mm plossls or orthos to choose from so decided to try one. None available from US stores so ordered direct from China. Took 3 weeks to get here with the lesser shipping option.

On Jupiter against an older Brandon and Celestron plossls it was right in the middle. The Brandon was sharp to the edge as Jupiter slid off the field. The SV went out of focus right at the edge. Sharpness and contrast between light and dark areas was also right in the middle of these two eyepieces.

None of these have much eye relief, but Jupiter was kinda small at 200x in my 8" f5 dob with 1.6x Nikon Barlow, so you could pull back a little and see the whole planet and closest moons. China has made improvements since the Celestron came out in 2012.
20220121_150631.jpg
Arizona- where the sky's are not cloudy all night.

Triple lensed fracs are so yummy when looking at planets.
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Bigzmey United States of America
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Re: SVbony 8mm plossl 207 SPL

#2

Post by Bigzmey »


Not that one need an excuse to get more EPs, but I was wondering if you already have a couple of 8mm Plossls why get another one?
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.

Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2382, Comets: 34, Asteroids: 255
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Jones
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Re: SVbony 8mm plossl 207 SPL

#3

Post by Jones »


It may have been better than the Brandon, which despite its price tag is not a superior optic.

Way back in 2006 when the 2nd red spot formed on Jupiter, my Brandon 6mm was the only eyepiece that could see it. Now they have been surpassed by numerous lenses.
Arizona- where the sky's are not cloudy all night.

Triple lensed fracs are so yummy when looking at planets.
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Re: SVbony 8mm plossl 207 SPL

#4

Post by gul1337 »


Thanks for the review, I was looking for small eyepiece to fill a gap between my 10mm and 6mm Baader Ortho for my binoviewer, Is eye relief too tight for a binoviewer? I can use 6mm BCO, but it has eye relief at the limit :)
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Re: SVbony 8mm plossl 207 SPL

#5

Post by helicon »


gul1337 wrote: Thu Mar 17, 2022 9:39 pm Thanks for the review, I was looking for small eyepiece to fill a gap between my 10mm and 6mm Baader Ortho for my binoviewer, Is eye relief too tight for a binoviewer? I can use 6mm BCO, but it has eye relief at the limit :)
Hello gul1337 and welcome to the forums!
-Michael
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
Binoculars: Celestron SkyMaster 15x70, Bushnell 10x50
Eyepieces: Various, GSO Superview, 9mm Plossl, Celestron 25mm Plossl
Camera: ZWO ASI 120
Naked Eye: Two Eyeballs
Latitude: 48.7229° N
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Re: SVbony 8mm plossl 207 SPL

#6

Post by notFritzArgelander »


gul1337 wrote: Thu Mar 17, 2022 9:39 pm Thanks for the review, I was looking for small eyepiece to fill a gap between my 10mm and 6mm Baader Ortho for my binoviewer, Is eye relief too tight for a binoviewer? I can use 6mm BCO, but it has eye relief at the limit :)
Eye relief for a 6mm Orthoscopic is typically 0.76 x the focal length so your 6mm should have 4mm eye relief.
Eye relief for an 8mm Plössl is typically 0.50 x the focal length so the 8mm should also have 4mm eye relief.

Design of the eyepiece top can make a difference, though.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: SVbony 8mm plossl 207 SPL

#7

Post by gul1337 »


Thanks, that would be tight, and with lens being recessed a little, maybe I should think about different design for binoviewer
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Jones
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Re: SVbony 8mm plossl 207 SPL

#8

Post by Jones »


I have an 8mm HR from TSOptics, 20mm eye relief, 58 degree field that would be much better for bino's. Think saw a Kasai 8MM on Ebay, that WA series that everyone brands as their own, but they don't have a lot of eye relief, but more than orthos.
20220318_174442.jpg
Arizona- where the sky's are not cloudy all night.

Triple lensed fracs are so yummy when looking at planets.
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Shorty Barlow
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Re: SVbony 8mm plossl 207 SPL

#9

Post by Shorty Barlow »


Image

My guess is that these are made by the same manufacturer.

Image

I have no idea who actually manufacture the Expanse clones though.
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