binoviewing televue 85 .

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messier 111
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binoviewing televue 85 .

#1

Post by messier 111 »

Hello to all ,
I would like to do binoviewing with a televue 85 .
Which one? And is there anything I should know?
thanks .
I LOVE REFRACTORS ,
:sprefac: takahashi 100 dz :telescopewink: Lunt 60mm :observer: sw 120 ed :galleleo: Televue 60 mm ed
EYEPIECES, all Delos .

Jean-Yves :flags-canada:
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notFritzArgelander
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Re: binoviewing televue 85 .

#2

Post by notFritzArgelander »

Binoviewing is tricky. I've settled on Baader products for that although there are other fine product lines. I used the Mark V for a long time but downsized to the Maxbright.

The main trick is to assure that you have enough focus travel to accommodate the optical path. Also since the TeleVue 85 is relatively fast you may need a compensator to remove spurious color and take care of any deficiencies in focus travel. Some folks use barlows for the latter. I use the Baader glass path compensators.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: 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 III, Vixen Porta II, Celestron CG5, Orion Sirius EQG
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messier 111
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Re: binoviewing televue 85 .

#3

Post by messier 111 »

some have already said that it was tricky also with the vision of things.
I LOVE REFRACTORS ,
:sprefac: takahashi 100 dz :telescopewink: Lunt 60mm :observer: sw 120 ed :galleleo: Televue 60 mm ed
EYEPIECES, all Delos .

Jean-Yves :flags-canada:
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notFritzArgelander
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Re: binoviewing televue 85 .

#4

Post by notFritzArgelander »

messier 111 wrote: Wed Nov 24, 2021 9:29 pm some have already said that it was tricky also with the vision of things.
As long as the inter pupillary distance of your eyes is within the range the binoviewer accommodates that's the first issue. If you already manage binoculars well there should be no other problems.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: 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 III, Vixen Porta II, Celestron CG5, Orion Sirius EQG
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Refractordude
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Re: binoviewing televue 85 .

#5

Post by Refractordude »

Do binoviewers produce/show a 3D effect like binoculars do?
Telescopes: Celestron 150mm f/8 Refractor, Meade LX70 120mm f/8 Refractor, Vixen 70mm f/12.9 Refractor, Orion ST80, Tasco 49N 50mm Red Refractor
Binoculars: Orion GiantView ED 16x80, Zhumell Giant 20x80, Oberwerk LW 11x70, Levenhuk Sherman 7x50
Mounts: Orion SkyView Pro Equatorial, Orion Versago II Altazimuth, Farpoint Universal Parrallelogram Mount, Orion Paragon-Plus Parrallelogram Mount, Orion Tritech II Fluid Head Tripod
Finders: GSO 8x50 Raci, Svbony Red Dot
Diagonals: GSO Dielectric 2", GSO Dielectric 1.25"
Eyepieces: Starguider Dual ED 12mm/15mm/18mm, Long Perng LER 5mm/6mm/9mm, BST UWA 4mm/7mm, AgenaAstro 8mm-24mm Zoom, Meade 56mm Plossl, GSO Superview 30mm, Astromania-Olivon 22mm, Celestron Ultima Edge 30mm, GSO Plossls 32mm/25mm/20mm, GSO 20mm Superview, Svbony 20mm/15mm/9mm/6mm, Svbony Aspheric 23mm/10mm/4mm, Agena Super Wide Angle 15mm, GSO 2" 2x ED Barlow Lens, Few No Name Brand Ebay Plossls
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messier 111
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Re: binoviewing televue 85 .

#6

Post by messier 111 »

Someone told me that it was even better, because of the magnification.
It's like looking into giant binos.
like the apm 100mm ed.
I personally have no idea.
I haven't had a chance to try it yet.
I LOVE REFRACTORS ,
:sprefac: takahashi 100 dz :telescopewink: Lunt 60mm :observer: sw 120 ed :galleleo: Televue 60 mm ed
EYEPIECES, all Delos .

Jean-Yves :flags-canada:
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Re: binoviewing televue 85 .

#7

Post by JayTee »

I’ve done the bino viewing on scopes as large is 22 inches. It is an amazing experience it’s like you get sucked right into outer space.
JT
∞ Scopes: Celestron CPC1100 #2 Scope: 8" f/7.5 Dob AP Scopes: TPO 6" f/9 RC, ES 80mm f/6 APO G&G Scopes: Meade 102mm f/7.8, Bresser 102mm f/4.5 Guide Scopes: 70 & 80mm fracs
∞ Mounts: iOptron CEM70AG, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: Canon T3i (x2), ZWO ASI294MC Pro & 120MC, Orion SSAG, WYZE Cam3 (x2)
∞ Binos: 10X50,10.5X70,15X70², 25X100
∞ EPs: ES: 21 100°, 30 82° X-Cels: 9, 12, 18, 25 GSO:15,20
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I never met a scope I didn't want to keep. "My God, it's full of stars." Searching the skies since 1966!
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Bigzmey
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Re: binoviewing televue 85 .

#8

Post by Bigzmey »

I got into binoviewing earlier this year. Wanted to get Baader binoviewers but they are permanently out of stock. I went with very basic Orion BVs and they work nicely in my refractors. Several vendors sell rebrands of the same unit. To reach focus with these basic BVs in refractors you need to use barlow nose piece. It increases focal ratio of the scope so you need to use longer FL EPs. My favorites are pairs of Meade 32mm and 26mm Plossls, but I have used EP pairs down to ~10mm. DSOs and doubles look dark in BVs, but the Moon is stunning. From what I hear planets looks nice to, but I am generally heaving inferior views of planets this year, so can't judge yet.

https://www.telescope.com/Orion/Orion-B ... binoviewer
Scopes: Stellarvue: SV102 ED F7; Celestron: 9.25" EdgeHD F10, 8" SCT F10, Omni XLT 150R Achro F5, Onyx 80ED F6.3; iOptron: Hankmeister 150mm Mak F12; SW: 180mm Mak F15; Meade: 80ST Achro F5.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar; Farpoint: UBM.
Binos: Celestron (Vixen) Giant 20x80; Orion: Binoviewers, Little Giant II 15x70, WorldView 10x50, Nikon: Action EX 16x50 & 8x40.
EPs: Pentax: XWs & 2xXFs; TeleVue: Delites, Panoptic & Plossls; ES: 68, 62; Vixen: 2xSLVs; Baader: 2xBCOs, Aspherics, Mark IV, Meade: Plossls.
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: 2407 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 1907, S110: 77). Doubles: 1534, Comets: 21, Asteroids: 106
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Bigzmey
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Re: binoviewing televue 85 .

#9

Post by Bigzmey »

Refractordude wrote: Wed Nov 24, 2021 10:19 pm Do binoviewers produce/show a 3D effect like binoculars do?
On Moon you do see 3D, the rest of space looks flat. :)
Scopes: Stellarvue: SV102 ED F7; Celestron: 9.25" EdgeHD F10, 8" SCT F10, Omni XLT 150R Achro F5, Onyx 80ED F6.3; iOptron: Hankmeister 150mm Mak F12; SW: 180mm Mak F15; Meade: 80ST Achro F5.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar; Farpoint: UBM.
Binos: Celestron (Vixen) Giant 20x80; Orion: Binoviewers, Little Giant II 15x70, WorldView 10x50, Nikon: Action EX 16x50 & 8x40.
EPs: Pentax: XWs & 2xXFs; TeleVue: Delites, Panoptic & Plossls; ES: 68, 62; Vixen: 2xSLVs; Baader: 2xBCOs, Aspherics, Mark IV, Meade: Plossls.
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: 2407 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 1907, S110: 77). Doubles: 1534, Comets: 21, Asteroids: 106
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WilliamPaolini
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Re: binoviewing televue 85 .

#10

Post by WilliamPaolini »

messier 111 wrote: Wed Nov 24, 2021 8:21 pm Hello to all ,
I would like to do binoviewing with a televue 85 .
Which one? And is there anything I should know?
thanks .

If your plan is to use 24mm Panotics or 32mm Plossls or any eyepiece that maxes out the field stop of a 1.25" eyepiece (approx 27mm), then you want to make sure that the binoviewer you select has a clear aperture of at least 25mm. Anything much less and you will see vignetting. Of course, this assumes you are not using an OCA or GPC with the binoviewer. Not many telescopes can binoview without an OCA/GPC/Barlow since there is not enough backfocus to handle the extra light path of the binoviewer. Backfocus on a TV85 is I believe about 150mm and typically I find that 175-180mm is needed to binoview without an OCA. So the Barlow or OCA/GPC extends the light cone so the binoviewer can come to focus. With your TV 85 you will need to use an OCA/GPC from all that I have read from others. So expect that you will need at least a 2x OCA/GPC to come to focus meaning something like a 24mm wide field or 32mm Plossl will give you 52 or 68x as your minimum magnification and about a 1.3 degree TFOV.

My TSA-102 (230mm backfocus) and APM-152 (175mm backfocus) both are binoviewer friendly so do not need an OCA when binoviewing (APM just barely makes it). I have the Baader MaxBright-II binoviewer and find it quite excellent. I previously had the William Optics binoviewer and it was no where near as ergonomically pleasant plus it vignetted with 32 Plossls or 24 Pans as its clear aperture is only 20mm.
-Bill

U.S.A.F. Veteran - Visual Amateur Astronomer since 1966 - Fully Retired since 2019
8" f/5 Newt - Lunt 152 f/7.9 - TSA 102 f/8 - Vixen 81S f/7.7 - P.S.T. - Pentax 65ED II - Nikon 12x50 AE
Pentax XWs - Baader Morpheus - Takahashi LEs - Edmund RKEs - BST Starguiders - 6ZAO-II/5XO/4Abbe
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Re: binoviewing televue 85 .

#11

Post by WilliamPaolini »

-Bill

U.S.A.F. Veteran - Visual Amateur Astronomer since 1966 - Fully Retired since 2019
8" f/5 Newt - Lunt 152 f/7.9 - TSA 102 f/8 - Vixen 81S f/7.7 - P.S.T. - Pentax 65ED II - Nikon 12x50 AE
Pentax XWs - Baader Morpheus - Takahashi LEs - Edmund RKEs - BST Starguiders - 6ZAO-II/5XO/4Abbe
PM and Email communications always welcomed
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messier 111
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Re: binoviewing televue 85 .

#12

Post by messier 111 »

thanks to all of you .
I LOVE REFRACTORS ,
:sprefac: takahashi 100 dz :telescopewink: Lunt 60mm :observer: sw 120 ed :galleleo: Televue 60 mm ed
EYEPIECES, all Delos .

Jean-Yves :flags-canada:
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