FIELD TEST: CARL ZEISS APOCHROMATIC & SHARPEST (CZAS) BINOVIEWER
by WilliamPaolini
Fig 1: The CZAS Binoviewer with included accessories: Baader 1.25" ClickLock eyepiece holders, Zeiss Bayonet, Baader T-2 Quick Changer, and Baader 1.25" nosepiece. Image Credit: Author. 1. Overview [NOTE - This product evaluation was conducted in 2021] This astronomical binoviewer is offered by Denis...
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FIELD TEST: CARL ZEISS APOCHROMATIC & SHARPEST (CZAS) BINOVIEWER
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WilliamPaolini
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FIELD TEST: CARL ZEISS APOCHROMATIC & SHARPEST (CZAS) BINOVIEWER
-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
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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j.gardavsky
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Re: FIELD TEST: CARL ZEISS APOCHROMATIC & SHARPEST (CZAS) BINOVIEWER
Hello Bill,
this is a very precise and helpful review of the ZEISS binoviewer.
The combination of the beam splitter cube with the mirrors avoids too much light path through the glass prisms,
and herewith the risk that the refracor optics will be too much overcorrected.
And this has been the reason for this binoviewer design, even if technically more complicated than the full prismatic binoviewers.
Best,
JG
this is a very precise and helpful review of the ZEISS binoviewer.
The combination of the beam splitter cube with the mirrors avoids too much light path through the glass prisms,
and herewith the risk that the refracor optics will be too much overcorrected.
And this has been the reason for this binoviewer design, even if technically more complicated than the full prismatic binoviewers.
Best,
JG
6" F/5 Sky-Watcher achro, 2" BBHS Star Diagonal, 2" zenith prism, 1.25" Takahashi prism
Leica 82mm APO Televid
Eyepieces: Docter UWA; Leica B WW and WW Asph. Zoom; Leica HC Plan S and L, monocentric; Pentax SMC XW, O-, XO; Tak MC O, Carl Zeiss B WW, and Pl, E-Pl, S-Pl, W-Pl;
Swarovski SW; Baader Symmetric Diascope Edition; Nikon NAV SW, ; TMB supermonocentric; Rodenstock; Vixen HR; TV Delos
Filters: Astrodon, Astronomik, Baader, Balzers, Zeiss West and East, Lumicon
Binoculars (7x42 up to 15x85): Docter Nobilem, Leica Ultravid, Nikon Astroluxe, Swarovski EL Swarovision; BA8 (Kunming Optical)
Leica 82mm APO Televid
Eyepieces: Docter UWA; Leica B WW and WW Asph. Zoom; Leica HC Plan S and L, monocentric; Pentax SMC XW, O-, XO; Tak MC O, Carl Zeiss B WW, and Pl, E-Pl, S-Pl, W-Pl;
Swarovski SW; Baader Symmetric Diascope Edition; Nikon NAV SW, ; TMB supermonocentric; Rodenstock; Vixen HR; TV Delos
Filters: Astrodon, Astronomik, Baader, Balzers, Zeiss West and East, Lumicon
Binoculars (7x42 up to 15x85): Docter Nobilem, Leica Ultravid, Nikon Astroluxe, Swarovski EL Swarovision; BA8 (Kunming Optical)
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Bigzmey
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Re: FIELD TEST: CARL ZEISS APOCHROMATIC & SHARPEST (CZAS) BINOVIEWER
Great review Bill!
I also saw your review of Baader Maxbright II on Cloudy Nights and it sounds like you were happy with their performance two. Considering larger clear aperture of Maxbright II and the fact that both Maxbright II and Zeiss can reach focus in your scopes without GPCs, what in your opinion would justify over 2x higher price tag for Zeiss?
I also saw your review of Baader Maxbright II on Cloudy Nights and it sounds like you were happy with their performance two. Considering larger clear aperture of Maxbright II and the fact that both Maxbright II and Zeiss can reach focus in your scopes without GPCs, what in your opinion would justify over 2x higher price tag for Zeiss?
Scopes: Stellarvue: SV102ED; Celestron: 14" & 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: Rowan: AZ100; 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, Delos, Panoptic & Plossls; ES: 68; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV, Celestron: X-Cel LX.
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; Astronomik: UHC.
Solar: HA: Lunt 50mm double-stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3512 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2358), Doubles: 2926, Comets: 38, Asteroids: 344
Mounts: Rowan: AZ100; 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, Delos, Panoptic & Plossls; ES: 68; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV, Celestron: X-Cel LX.
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; Astronomik: UHC.
Solar: HA: Lunt 50mm double-stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3512 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2358), Doubles: 2926, Comets: 38, Asteroids: 344
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Tom yates
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Re: FIELD TEST: CARL ZEISS APOCHROMATIC & SHARPEST (CZAS) BINOVIEWER
Great information I have just bought a pr of these binoviewers really glad I bought them