Quote:Hi Don,I think this is the beauty of the design…it’s an optical illusion. (pun intended)Your are correct that the opening in the top of the mirror box is oval, but when viewed through the UTA it looks round. Same as the secondary optic does when viewed from the primary mirror.I’m not sure how you’re calculating the altitude bearing diameter, as it can run plus or minus of the size you mentioned. An example would be that on my LE Series Scopes the diameter of the altitude bearing is 20” and works just fine. But…the bearing diameter of this concept scope is indeed 24”.The new Horizon has clear advantages in size to the traditional build. Honestly the photos don’t do it justice. Thanks for the questions,Mike
Tak FC100 Tak FS152 10" f/6 Zambuto dob 24" f/3.3 Starstructure
Quote: However, the TL will be available as a “push to” only, no goto option.
Happy owner of--
A Mag 1, 12.5 inch Porta Ball
A Dual Axis Equatorial Platform
A PST Double Stack
Paul 16" Starstructure f/4 w/AN-SC and Zambuto optics Celestron Edge HD 1100 Lunt LS60DS Orion 8" imaging newt Explore Scientific ED127 CF Apo Astro-Tech AT65EDQ Astro-Physics 1100 mount Celestron AVX mount Mallincam Xtreme Denk Binotron
-DannyMy warehouseMy Channel
Quote:Great question, I certainly expected the design to get pulled apart here on CN.
Quote:To answer your question...No I have not tested every size because I don’t see it as a problem.
Quote:It’s important to understand that the back 4 trusses (long ones) are all the same length. Same as the front 4 (short ones)
Quote:Considering the largest 30” differential in length using a 6063 T52- 2” OD pipe with a .055 wall and using a 30 degree temperature shift over a 6 hour period (basically 5 degree +/- per hour shift) Using a .000023 coefficient (m/m* c) I see a length shift of about .002. This and how it would equate to actual secondary misalignment to the primary is probably a quarter of that as most of the expansion would be absorbed in the attachment points of the trusses.
Quote:PS...Quick note, all the trusses on the Horizon are rubber wrapped, so the temperature of the trusses will be very stable.
6"f15 D&G, 6"f5 Jaegers.
TSA 102, TV60.
Docter 15x60, 10x50.
Quote:Hi Rob,I'm trying to hire someone to build me a pro site, so this may be a little while. I do have all the specs and pricing for all sizes from 8" to 30" ready to go. If anyone wants info on a specific size just drop me an e-mail. Please be patient with me as I’m being hammered with e-mails. I may take a few days to get back with you.
10" Sumerian, Webster D18, solar scope, small 'frac, Vixen Foresta 8x42 Take action against Light Pollution. Together we can make a difference.
Quote:I am glad to see that Starstructure is innovating, offering change and not resting on its laurels--like some Dob manufacturers.
Rob 18" f/4.3 Starmaster 8" Meade LX200 Classic Celestron 15x70 Skymaster Binoculars
Quote:I'd just like to embarrass Mike Z. a bit with a "testimonial" to his (1) commitment to SS owners, (2) continuing desire and efforts to improve his (already 'best on the market') designs and almost uncanny vision as to what might be possible with telescope design.Mike just recently "upgraded" my seven year old 28" SS with the new transport system and adjustable (for imaging) UTA...gave it a fresh paint job and made it "like new" again. He didn't have to do that. But he WANTS his 'works of art' (my phrase, not his) to all be at their best.Ordering a 28" SS "Horizon" was a no-brainer for me. I have no doubt it will, once again, raise the bar for large-scope quality.Mike Harvey
Jeff -----TEC 140, Stellarvue SVR90T, SV115T20 and AT65EDQ refractors,Webster D14, C11 EdgeHD Lunt LS60THa solar scope double stacked with LS60FHaTelevue Pan 41; Ethos 21, 17; Nagler 31T5, 9T6, 7T6, 5T6, 3.5T6; Delos 10, 12, ES25, 14, 9Astro-Physics 900GTO with Rob Miller Tri36M TripodDM-4 Mount-Extension-Tripod w/ Sky CommanderDM-6 Mount-Losmandy Adapter/Extension-Berlebach Planet w/ Argo Navis