David Cotterell Toronto, Ontario "If an observer actually sees an object, there is no point in referring to a formula to find out whether he ought to see it; and if he fails to detect it, no formula will ensure his success." - W.H. Steavenson 8" f/15.5 TEC Maksutov - 16" f/5 Teeter/Zambuto Dob - TEC 140 - AT 65EDQ APO Refractor - Astro-Physics Mach 1 GTO Mount - iOptron ZEQ25 mount - Discmount DM6 - Canon 60Da
Celestron C11+EQ6, skywatcher /Zambuto 12"dob,watchhouse tracking platform, 16"/Zambuto lightbridge , Ethos's 6,8,10,13,17,21. Naglers 31,26. Lieca ash zoom, televue 2.5 powermate,2"2x powermate .Paracorr type2. Howie glatter 2" laser & Tublug. Lumicon 2" UHC, 03, H-Beta,Televue smoothies ( all of em) , Meade 4000 smoothies ( all of em). That'll do for now.
Fred StarStructure LE Series 18" f/4.3 (Zambuto & Nexus/ServoCat/Skytools3 Pro) Celestron 8" SCT w/Starlight Feathertouch Microfocuser; Celestron 102mm f/9.8 refractor Stellarvue SV80ST f6 Triplet APO Tele Vue & EarthWin binoviewers Enough Eyepieces and Accessories to put my Scopes to Good Use Free-Turn Q HalfHitch, CG5-ASGT(2), Astro-Tech Voyager mounts
Quote:What is lambda factor in Zambuto mirrors and what reflectivity?
Orion UK have 97% reflectivity and 1/10 lambda best mirrors to offer!
10" F/4.7 Modified Skywatcher Reflector, 38mm Orion Q70, 17mm Modified Ultima LX, 10mm TeleVue Delos, 7mm Pentax XL.
24" f3.7 truss Dobson http://www.astrosurf.com/aheijkoop/Equipment/24%20inch%20Dobson/24%20inch%20D...
6'' Orion SkyQuest f/5 12.5" Astrotel truss dob f/3.3 20" Super FXQ Starmaster William Optics 80mm ZenithStar ED II 1850/2500 Observing sessions grand total for 2013, 49. So far in 2014, 11
16.5 inch f 5.3 Zambuto optics homebuilt Dob
8 inch f 8 homebuilt Dob
Fraser Valley Astronomers Society Director
Quote:Carl Z currently has a 12 inch and a 10 inch F/6 ready for sale. http://zambutomirrors.com/zambutoopticalco.htmlDSD.
Quote:For those living in Europe, Mirro-Sphere in France:http://www.mirro-sphere.com/topic/index.html
Quote:Mike Lockwood currently has a 10" ready to go. http://www.loptics.com/stock.html Bill
Happy owner of--
A Mag 1, 12.5 inch Porta Ball
A Dual Axis Equatorial Platform
A PST Double Stack
-DannyMy warehouseMy Channel
14" Strut; 10"XT; 102ES; 22 in Process; 3.5,5,7,10,14,20mm Pentax XW; 17.3 & 12mm Delos; 27mm Panoptic; 20&24mm ES 68; 24mm ES 82; 30mm ES 82; 6&10mm BCO;
Quote:Have a feeling the OP does not realize how much Zs cost compared to the other 2
Cliff Mygatt Astronomical League Master Observer
Astronomical League Lunar II & Constellation Hunter programs national coordinator President, Olympic Astronomical Society Bremerton, WA
Orion XT12i Fully flocked with Zambuto Mirror, Protostar quartz secondary and Moonlite CR focuser
Meade 8" LX10 SCT Fully Flocked with Magellan I DSCs
Orion 120mm and William Optics 80mm Refractors Ethos 21mm,17mm,13mm,10mm,8mm,6mm,4.7mm,3.7mm Nagler 31mm and paracorr type 1
Quote:I have a Zambuto in my Orion XT12i and have never looked back. You cannot go wrong with a Zambuto mirror. Carl's customer service is top notch as well. Good Luck!
Tim Gilliland http://astrobin.com/users/Timgilliland/
10" OO VX, 6" iOptron Mak-Cass, Orion 100ED
Quote:I have owned mirrors from almost all well known mirror makers over the past 30 years -- and Lockwood and Zambuto are the only ones I'll ever buy from again.
Home made 16" f5 Terry Ostahowski optics - ArgoNavis/ServoCAT
ES 30 mm, Ethos 21, 13 and 10 mm, Paracorr II, Antares Barlow 2" 1.6X
2" DGM NPB filter
2" Catseye Cheshire/Sight tube - 2" Howie Glatter laser + Tublug
Quote:@Don If you have a chance to get a Carl Zambuto mirror and you can afford one, then just do it.
Quote:The OP's question was about a ranking of 3 makers he mentioned.Companies he didn't mention but should investigate (if Zambuto isn't chosen, for some reason):Gordon WaiteOMIPegasusGalaxyLightholderNormand FullumOldham Optical1800DestinyPlus all the ones already mentioned.
Quote: Companies he didn't mention but should investigate (if Zambuto isn't chosen, for some reason):
ATM 13.1" reflector Sky Watcher BK 120 ED Orion 80 ED HEQ5 Pro and EQ6 Pro Modded Rebel XT and T3i unmodded KWIQ Guider http://www.pierresplace.ca