Orange Tube C8, Tasco 7te-5, 4" Criterion Dynascope, Jason/Towa 313
Nikon Action Extreme & Pentax WPii Binoculars
At my club, everything one could want up to 18"
David E Old chemists never die, but we Barium just the same.
Orion XT8i Sears 6333 Refractor Tasco 7TE
Celestron Sky Master 15x70 Binos Orion Sirius 10mm 25mm 32mm UO 7mm HD Ortho Expanse and Agena Astro EWAs 6mm 9mm 15mm Siebert 6.9, 9.9mm StarSplitter (SS) ES 4.7, 6.7 and 11mm 82° N2 Meade 20mm QX70
Quote:If your refractor has a combination drawtube/r&p then focus will not be a problem with an adapter. Since many simple R&P's will not have enough in-focus to accommodate the extra length of the adapter, a hybrid diagonal such as this one on EBay might be a better solution. Bear in mind that you are still working with a .965" focuser, so long focal length 1.25" eyepieces, such as a 32mm Plossl, will be vignetted in the field of view.
Prinz Optics 660 - 76.2x1250mm refractor Tasco 10K - 80x1200mm refractor JC Penney - 50x600mm refractor Astral 500 - 60x910mm refractor Prinz Astral 400 - 60x700mm Refractor Tasco 4VTE - 40mm refractor plus many more I cant remember the details for at the moment
Quote:Quote:If your refractor has a combination drawtube/r&p then focus will not be a problem with an adapter. Since many simple R&P's will not have enough in-focus to accommodate the extra length of the adapter, a hybrid diagonal such as this one on EBay might be a better solution. Bear in mind that you are still working with a .965" focuser, so long focal length 1.25" eyepieces, such as a 32mm Plossl, will be vignetted in the field of view. Ideally, one's scope has a full sized drawtube and only needs an adapter like the Vixen to use 1.25 inch eyepieces without vignetting. But some telescopes have a small diameter drawtube that can only use a hybrid diagonal or something like the Blue Fireball. Some though don't have enough back focus to focus with even a hybrid diagonal. Each scope is an individual challenge.My old Asahi-Pentax is a case in point. It has the full sized drawtube and the diameter is right for the Vixen adapter but the thread pitch is wrong. Scrounging through my parts boxes I discovered that the eyepiece end of the 1.25 inch diagonal that came with a Burgess Optical 102F/6 was a perfect fit. When I saw another diagonal available on Astromart I bought it just to be prepared and sure enough, one day another Asahi-Pentax showed up on Craigslist and I was already prepared.Jon
Michael Creature of the night. Asahi Jupiter (60mm f=800mm) Skywatcher Dob (200mm f=1200mm) ST 80 (80mm f=400mm) PST Ha Solar (40mm f=400mm)
4.5" f/10 A Jaegers Homebuilt Refractor,12"GSO f/5.3"Reflector,10"Meade LX-50 SCT, 8" Hardin f/6 reflector Yulin 5"f/9 refractor, 4.5"TASCOS Luminova,11TE-5 & 11TR Lunagrosso reflectors,Cel.100mm Reflector.3" Tasco 3TER 700mm 76mm reflector, Tasco 10TE 76mm 1200mm f/l Refractor 60mm TASCO 7TE-5 1000mm f/16.7 Refractor 60mm TASCO 9TE 700mm f/l refractor 60mm TASCO 9TE-0 710mm f/l Refractor www.vega-sky-center.com
Roger A. DeKing
Dave in West Michigan Tasco 10te (1959) 76.2x1200mm Tasco 7TE-5 60x1000mm f16.7 Meade 2045 sct Meade 312 80mmx900 (Japan) Polarex 114 60x900 Jason 313 SYW Yamamoto 60x900mm Orion 10 Inteliscope Dob, Nexstar C6, 102, and 80GT, Ultima C8, Coulter 8 dob, Meade ETX80, LXD75 Pentax 12x42 DCF, 16x50 PCF, Swift 8x40 Pentax ist DSLR, Canon sx110
Refractors Reflectors Two Cats A few eyepieces
Kmart 40mm-Thanks Mom|Jason60mm-Thanks Dad|C80SS-Thanks Wife|C90|C102|C6XLT|AP130EDFGT|C-11XLT EQ-2|EQ-3|CG5GT|Mach 1 & Eagle "For once you have tasted flight, you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return".-Leonardo da Vinci "We're all in the gutter, but some of us are looking at the stars."-Oscar Wilde ~RIP Dad, you were my best friend...Godspeed!~
Arcturus Observatory Belgium
Unitron 114 62mm Unitron 128 60mm Unitron 140 75mm Unitron 155 102mm Cave Astrola 10" f/5 (1959) Meade LX90 8" & LXD75 AR6-AT