It looks like Stellarvue will offer a the SV127 refractor that features a dual fluoro APO triplet. Is this more of a marketing thing (others have one "fluoro"...
Rich N
rnapo@...
Mar 1, 2007 4:58 pm
20873
I ask myself "...and you are contributing to the fun how exactly?" Yes, other groups can be 'more fun' in a general sense but how many of those 'other groups'...
It would be more fun if the post I sent earlier this morning would show up. I was asking about the SV127 dual fluoro. Rich...
Rich N
rnapo@...
Mar 1, 2007 6:58 pm
20875
... features a dual fluoro APO triplet. ... have two "fluoros"), ... triplet? ... I've known Vic Maris for about 5 years and have yet to see him do something...
Hello All, I hope its okay for this place and the moderators that me , a Dealer, open such a critical thread here. If its a problem, simply delay it and inform...
... Hi Rich I know that Tak made their FS series refractors with one true fluoride element calcium fluoride (CaF) & was wondering if the SV127 dual fluoro uses...
Markus, There seems to an increasing tendency for people here to shop based almost entirely on the lowest price, and other concerns have become far less ...
Hi Alan we have so many yahoo groups, but I think I missing one called : How to design, how to make your own Telescope, that would be a good toul on top of the...
... of ... Or people could visit their local library and borrow one of the classics. ... , ... Then the maker can tell the importer anything, which often...
Hi Markus, Yes, Apos are hot, and you and I are at fault there. We and others of the so-called elite manufacturers have been wetting the appetite of the huge...
Chris; Per a posting from Vic some time ago on the SV group it uses dual elements of Fluoro-crown glass. As it is a Russian designed and made lens I would...
Based on my yahoo Email, or lack thereof, this morning Yahoo is again having problems, very possibly due to another hacker attack. That seems to be the usual...
Markus; Discussions such as yours are always welcome whether you are a dealer or not. I merely request that no personal attacks be made on this group. Facts...
Markus; I agree with you here. For those truly interested the book "The Dobsonian Telescope" by Kriege and Berry can definitely show you how to build, and...
... <snip> I just want to make a clarification .. about the Tele Vue product mentioned above. We do all our own optical and metalwork designs. And the...
Markus and Rolando, Your technical points as skilled optical designers regarding the influx of so-called "doublet semi-apos" from Asian producers and OEM's are...
... Yes, but this is routinely done in all TMB, AP, TEC and Takahashi triplets. We all have the same issue! It is the nature of the beast, apo doublets,...
Alan; You got it and many of the importers know little or nothing about the equipment they are selling. The manufacturer can sell and tell them anything. One...
I am not a mass market manufacturer. I have limited capabilities. I can make between 200 - 500 scopes per year, that's it. I have in the past made larger...
... We all make many financial choices, and I think most people - certainly those in the middle class - could afford a high end APO if they really wanted one....
I am very interested in trying to find a high quality, multi-coated, 50-53mm objective with about a 450mm focal length. The best I have been able to find is a...
Hi Rolando, To build a small experimental scope. I do a lot of observing with smaller diameter scopes. The Stellarvue F50 (f4) is an excellent little travel...
... Alan, I always wondered who else might relate to their mileage in that manner. My Jeep has taken me just a bit over half way back now (1.97 light seconds)....
... Thank You Roland! You get what you pay for is exactly correct. High-quality optics require time and skill to produce. In my field, high-quality computer ...
Please help out the group by doing the following. Keep posts trimmed so the length does not get out of hand. This really helps those who receive daily...
Refractors@yahoogroup...
Mar 2, 2007 4:31 am
20899
I haven't been so emotionally drawn in to a discussion for quite a long time. I've read everyone's reply, then reread them again. The topic of this thread...
Preston; Look at Surplus Shed in their Precision Achromat lenses area. They have some 62mm or so diameter lenses in the focal length ballpark you are looking...
Mark; Unfortunately it seems to be true that there have ALWAYS been more mediocre to poor scopes on the market than good ones. Take a look at some of the...
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