A 60mm department store refractor started it all....
20 inch f8 Chief Ed Jones designed and a 17 f9 Zanbuto Wide Band Chief Mike Jones designed .Both unobstructed telescopes .
Quote:Maybe Danny will do some 3d drawings Of some of the ideas . Maybe a scale of the James Web all folded up for launch then opens up . Just kidding
-DannyMy warehouseMy Channel
-R.J. Discovery DHQ 8" Celestron C4-R on LXD75 ZenithStar 66 ED Triplet Hardin DSH 6" Orion Transporter 70 Sears 60/900mm 10x50's & assorted other binos
Quote:was actually hoping to come up with an aluminum version of this in the 8" size... Jetted out of 0.25" aluminum and tig welded together..... maybe even anodized...... http://www.sumerianoptics.com/products/alkaid/
Quote:Wonder how he did the trusses?
Quote:Quote:Wonder how he did the trusses? IMHO, trusses are usually over-designed, there's a lot of weight to save. A German design even uses lightweigth foldable rules, 8 of them apparently made it stiff enough.
Quote: Certainly easy enough to procure.
Quote: dunno were Danny is located,
Quote:rob contacted mr.sumerian but mr. sumerian didn't want to license his designs. whatever.
Quote:Quote:rob contacted mr.sumerian but mr. sumerian didn't want to license his designs. whatever.
You could go to the source: Strock 250
Here you will find drawings in PDF. Maybe not exactly the same but the similarity is obvious...
Quote:My trusses are made of aluminium, 8mm diameter, there are six, each 4 parts, connected with M7 threatparts.
My telescope holds collimation well. However, the construction is a bit fragile, but does the job well during hollydays.
Quote:The water jet will cut anything .Wood plastic carbon fiber so go wild
Quote:For the connectors it would be easy to turn some round bar stock to just under, and then tap the center. DJ light connectors...
Quote:We have some very talented designers and alot of great ideas, any interest in an 8" travel scope group build. Thinking of something that could be waterjetted out of aluminum.. Would need to account for various focal lengths of primaries...Seeing what people think.
Quote: - Dan from crawford machining may be interested in helping build some of the parts. I believe he helped with the SS127 refractor group build. Dennis from dobstuff may be able to help with select components too. (Disclaimer - I have no affiliation, (or even bought products from) the two afore mentioned businesses, but they seem to be willing to help atm’ers)