Hexafoc focusers?
- pakarinen
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Hexafoc focusers?
Anybody have experience using a Hexafoc focuser?
If so, how does it compare to a "vanilla" R&P and / or a Crayford 2-speed? I'd expect it to be about in the middle.
Thanks!
If so, how does it compare to a "vanilla" R&P and / or a Crayford 2-speed? I'd expect it to be about in the middle.
Thanks!
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I drink tea, I read books, I look at stars when I'm not cursing clouds. It's what I do.
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AT50, AT72EDII, ST80, ST102; Scopetech Zero, AZ-GTi, AZ Pronto; Innorel RT90C, Oberwerk 5000; Orion Giantview 15x70s, Vortex 8x42s, Navy surplus 7x50s, Nikon 10x50s
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Re: Hexafoc focusers?
Hexafoc is a variant of helical R&P focuser. A helical rack and pinion is a rack and gear set that has the teeth of the rack and pinion cut at an angle.
Helical R&P is my favorite focuser design. It does not slide under heavy weight like crayford do, and it does not have a backlash like classic R&P.
Hexafoc in addition to using helical rack and pinion also has a hexagon-shaped drawtube as opposed to round.ES /Bresser claim that this improves precision and reduces flex and slack. I don't know if this is for real.
In the past I had twoES scopes with older round drawtube version helical R&P focuser. They required some tuning out of the box, but worked nicely after that.
Helical R&P is my favorite focuser design. It does not slide under heavy weight like crayford do, and it does not have a backlash like classic R&P.
Hexafoc in addition to using helical rack and pinion also has a hexagon-shaped drawtube as opposed to round.
In the past I had two
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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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Re: Hexafoc focusers?
If you are planning on continuous use of large wide field eyepieces or cameras I would change the ribbed teflon strips supporting the drawtube for solid strips so they cannot crush flat over time.
Other than that a decent focuser.
Other than that a decent focuser.
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EQ: TAL MT-1, Vixen SXP, AXJ, AXD
Az/Alt: AYO Digi II/ Argo Navis, Stellarvue M2C/ Argo Navis
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Takahashi prism, TAL, Vixen flip mirror
Eyepieces: Antares to Zeiss
The only culture I have is from yogurt
My day was going well until... people
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Re: Hexafoc focusers?
My 8" Newt from the 70's has a Telescopics Helical R & P focuser. It is the best! It should be used across the board!
Cheers,
JT
Cheers,
JT
∞ Primary Scopes: #1: Celestron CPC1100 #2: 8" f/7.5 Dob #3: CR150HD f/8 6" frac
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
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Searching the skies since 1966. "I never met a scope I didn't want to keep."
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
∞ Guide Scopes: 70 & 80mm fracs -- The El Cheapo Bros.
∞ Mounts: iOptron CEM70AG, SW EQ6, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: #1: ZWO ASI294MC Pro #2: 662MC #3: 120MC, Canon T3i, Orion SSAG, WYZE Cam3
∞ Binos: 10X50,11X70,15X70, 25X100
∞ EPs: ES 2": 21mm 100° & 30mm 82° Pentax XW: 7, 10, 14, & 20mm 70°
Searching the skies since 1966. "I never met a scope I didn't want to keep."
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