Gregg 10" f8 Newtonian 12.5" F 4.5 Cave Astrola Unitron 114 w unihex , Unitron 128, Tasco 7te, Tasco 7te-5,Criterion 4000
12" DSH 8" f/4 Vega MakNewt
Quote:8"f12 would be awesome.I've been experimenting with the 6"f13, mostly diagonal mirror size and the support for it.The performance from these long newts is pretty much untouchable if you can control the tubes currents and all the other misc. thermal management of the optical tube.They are a specialized scope and only good for high power but are excellent for doing just that.Robert
Takahashi SKY90 , Vixen SP
Istar 127mm f/8 Achro , HEQ5 on TV Gibralter
C9.25 XLT carbon fiber , HEQ5 .
Classic refractors incl. Unitrons, Zeiss, Goto Optical, Royal Astro, Edmund; visual observer.
"Toto, I have a feeling we're not in Kansas anymore!"
Mike Traub(Mr. Congeniality): I've learned that I don't suffer from insanity, I enjoy it!:Shipfitters mottos; Cut to suit, pound to fit, paint to hide!: If it dosen't fit get a bigger hammer!......Retired and BROKE!!!!!!!!: The Maypole Observatory.
Quote:On can call something whatever they wish, last time I checked.
Astrophoto: Intes Micro ALTER-M606 (6" f/6 MCT), Astrotech AT6RC (6" f/9 RC), 2x Tair-3 lenses (300mm f/4.5)
Visual: Celestron 8 SCT ('77 Orange Tube, 8" f/10), Selsi #247 Refractor (aka Towa #339, 80mm f/15), Tasco 11TE-5 Newtonian (4.5" f/7.9), Galileoscope (50mm f/10)
Mounts: Celestron CI-700, iOptron ZEQ25GT, Celestron CG5-ASGT, plus a couple old EQ2s
My Astrophotography Site: http://ap.x-wing.ca/
What some may view as an argument I view as a different perspective.
7x35 and 10x50 sears tower binocs, 3" f/10 edmunds reflector, 2.4" f/11.7 manon refractor, 6" f/8 jaegers refractor, 10" f/11 R30 Istar refractor, 3" f/15.8 sans&streiffe refractor, 3.1" f/15 selsi refractor(towa 339), 2.4" f/15 sears refractor, selsi 30x30mm spyglass, criterion 5-draw 25x45x75x spyglass(1957), 4.25" f/14.8 tasco 20te.http://cleardarksky.com/c/OmahaNEkey.html
"The White Zone is for loading or unloading of passengers only. No Astrophotography." Cosmic Acres! Greatest restoration challenge: Tulley and Sons 3" achromat on Altazimuth mount, circa ~late 1820s
Quote: Yes , my 10 inch f/10 is almost the best Luna/Planetry scope I have ever looked thru , 25mm secondary disappears.
Here she is , the 2 parts of 12 inch aliminium tube in Dob form , each about 50 inches long as the f/l is 100 inches (2500mm )
NW Mass, inches from Vermont
(well....it used to say that.....)