Quote: No quarantee of working condition This is an auction therefore all sales are final.
Classic refractors incl. Unitrons, Zeiss, Goto Optical, Royal Astro, Edmund; visual observer.
"Toto, I have a feeling we're not in Kansas anymore!"
Quote:Any comments on the vintage 1963 Questar Standard 3.5 Telescope posted on e-bay? I have never looked through one but I have been told the optics are superb.
Uncle Rod Uncle Rod's Astroblog: http://uncle-rods.blogspot.com/
Refractors Reflectors Two Cats A few eyepieces
Solar Imaging Tutorial • Circa 1958 Gilbert 3" Reflector • Astro-Physics 105 EDT (Traveler) • Astro-Physics160 EDF • Astro-Physics175 EDF • Coronado 90/90/30 Hα • PSTs in Ha and CaK flavors • Circa 1810 Utzschneider,Reichenbach,Fraunhofer • Circa 1825 Merz,Utzschneider,Fraunhofer • Etc. etc.
Quote:Fine craftsmanship and quite collectible to be sure but, personal legends aside, optical magic always bows to the laws of physics. Paul
Scott my scopes: a few refractors (50-102mm), 2 Newts (4.5-12"), and an 8" SCT
1st Caveman Award!Maynard Clark 8" f/8The Horsetrail Cave 12.5" f/7.51975 Cave 8" f/7 Lightweight Deluxe1972 Cave 8" f/4.5 RFT DeluxeCriterion RV-6Logitech HD C615 Webcam for Imaging
Quote:Unless you have looked throuhg one for extended periods and have made serious observations with the comparison scope I would suggest you do not make any comments
Quote:I've seen M42 through both a Questar and a C5. The Questar won hands down. It was a good C5 and an average view of M42. The Questar presented what I could only characterize as superb. The contrast, definition, resolution of the trapezium, was handsdown, head and shoulders above the C5 view. Sure, you might see a few more faint fuzzys with a somewhat a larger aperture but you won't be seeing them through a Questar. Of course you won't be spending as much money either.Terra
Albert RV6's Celestron Ultima 2000 Royal Astro's Lafayette's 1950's 8" f/9 Edmund/Parks Newt 6" 1950's Edmund WF Newt Tasco 8V Coulter Odyssey 10
Quote:You know, there are those who are happy with double quarter pounders with cheese as well, I for on am not. I'll take 4 ounces of lightly seared Ahi tuna served on a bed of spinach leaves every time.
Furthermore, every time I hear someone compare a Meade ETX 90 to a Questar, I cringe. Again, if plastic parts, mass production, and a cheap facsimile look is to your liking, then that's fine for you. When the Meade ETX 90 came out is was nothing more than a Questar knock-off. Things haven't changed there either. If that is to your taste, or to your budget then fine. I for one, do not own a Questar, nor would I. I would rather spend that money on a fine refractor, preferably a long focal length classic one, made in Germany or Japan, or America prior to 1970. That is my taste and my preference.
Moreover, I hear a lot of quoting about the "laws of physics" without a lot to back it up. Again, this makes me cringe. Perhaps some who love to use this long overused and worn out cliche' do understand the laws of physics or at least some of them, many others who love to parrot this do not. The laws of physics with regard to aperture only apply if (1) you are on the moon, i.e., you are not looking through an atmosphere, and (2), everything else, and I do mean, everything else both optically and mechanically are equal. Seeing always trumps aperture. So does figure. We could also talk about statics and dynamics. I could go on and on here; I choose not to, because hopefully you get the point.
Finally, some of us thankfully, still appreciate truly fine hand craftsmanship, and artisanship. For me, the use of something that is truly fine adds to the pleasure of my experience. Taste and aesthetics count for me. We live in a culture of bigger is better, throw it away if you don't like it, change the channel, gimme now, I don't want to wait. That is a shame. Big gulps, big macs, and super-size me has done nothing for our culture in my opinion. These attitudes filter over into almost every aspect of our popular culture. And no, I don't have a Rolex but I do love my Victorinox Swiss watch. If I couldn't afford it, I would take a Timex with hands over a plastic digital watch with numbers, again I cringe at the thought. But that is in answer to your analogy.
So to me, statements like an "ETX90 is just as good as a Quester" or a "C5 is better than a Questar" are unfounded poppycock, where as, "I can afford an ETX90 or a C5, I could never justify spending that kind of money on a Questar" make sense.
A buffoonish fellow in our club told me at the last meeting "I was throwing money away to spend it on Unitron's and a Zeiss when I get a 16 inch dob like his," I just threw up my hands and walked away. He was dumbfounded. Not however, as dumbfounded as I was.
Quote:I hear a lot of quoting about the "laws of physics" without a lot to back it up. Again, this makes me cringe. Perhaps some who love to use this long overused and worn out cliche' do understand the laws of physics or at least some of them, many others who love to parrot this do not. The laws of physics with regard to aperture only apply if (1) you are on the moon, i.e., you are not looking through an atmosphere, and (2), everything else, and I do mean, everything else both optically and mechanically are equal. Seeing always trumps aperture. So does figure. We could also talk about statics and dynamics. I could go on and on here; I choose not to, because hopefully you get the point.
Obviously you did not get my meaning, I have nothing against the "Laws of Physics" I build a career on them. They certainly do not make me cringe. What makes me cringe is the blind quoting of the phrase without the understanding of the principles to back it up. They use this phrase blithely with the meaning that aperture is always better. In many cases, it is not.
Homemade 'scopes 8"f/7,6" f/5", 6"f/4, 4.25" Schiefspiegler,60mm Coronagraph,60mm H-alpha system, 4.25" White-light Solar Newtonian,solar spectroscope, 4" f/12, 4.5" f/16 & 6" f/12 Schupmann Medial refractors, 4" Celestar, 19 Stellafane awards 9 in optics Engineering = Taking what you have and making what you need.
Quote: When it comes to the optics quality of Questar and ETX-90 it's difficult to see any differnce on a double pass autocollimation test on the my optical bench of ones I have done. As for the one on Ebay, the optical design of this one looks to have the aluminized spot on the outside of the corrector since it is painted over with black paint. If that is the case then it using a design to get around the original Perkin Elmer/ John Gregory patent. This design is inferior to the original design that uses the spot on the back of the corrector since it introduce more color. So a modern day ETX 90 in theory would give a better image. When the patent ran out, Questar changed the optical design with the spot on the back of the corrector. Questar has a reconditioning service that starts out at about $500 and can restore a unit to as new condition. The one on Ebay could use a trip back to Questar in New Hope PA. I would be surprised if it doesn't sell for at least $1000. - Dave
Quote:This (a LOMO Astele 95) is a nice alternative that is far more affordable, tho far harder to find.
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"
Quote:I will never, ever in this lifetime or the next own a dobsonion telescope of any size, shape, color, or make. For those who do and will, fine for them. Not for me. I would also rather tour the country in a little sportscar rather than a big winnebago. Even if the big winnebago does have a bathroom, and even if I could afford the gas. Terra
"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:It's a small scope good for grab and go and suitable for casual inspection of the Moon and planets. For a lot of folks that is MORE than enough.
--------------------- --------------------- "Nothing exists but atoms and empty space. Everything else is opinion." Titus Lucretius Carus 99-55 B.C.