Hi! I have been looking at those German tests of refractors which was posted previously. Here are some of the images: http://rohr.aiax.de/foucault-bilder1.jpg ...
Tom, thanks for your input. It seems as if price always enters the picture somewhere along the way. I did look at the Orion 102mm but already having a 80mm,...
... 300mm fluorite lens. I am no expert on this, the question that pops up when discussing larger FPL-53 blanks; how optically uniform is the material? or, how...
Hi S0ren I have had and looked through ED triplets (High End) and TEC flourite triplets. I can see a difference. The TEC flourites have a little less "scatter"...
Is it to avoid "the float" on the large glass costs that AP decided to ask for 50% down on refractor orders when people "get the call"? Obviously AP wouldn't...
... I thought that the original question was on the price of a single 300mm FPL-53 blank of exceptional quality, Roland did not offer an estimate for the cost...
Hi Group, I just ran across this review posted on Astromart ( http://www.astromart.com/articles/article.asp?article_id=563 ). Sometimes people don't understand...
... I wish people would stop presuming things about the way a company operates. When we accept an order, the glass has already been purchased, is in inventory...
Hi Wes, What other 90mm fluorite triplet is there? I wasn't aware of any others. Tak Sky 90 is a fluorite doublet for example. Greg. ... flourite ... side ... ...
Hi everyone, I'm new to this group. Have a quick question; how does one remove an adjustable Synta lens cell from the optical tube? I'm assuming the whole...
Hi Greg I meant to say "another fluorite triplet, 90mm in diameter". Got the spelling correct this time. Wes ... ex- ... other "similar" ... side ... as...
Hi Wes, What brand was that? I am not aware of any other 90mm fluorite triplet. Greg. ... for ... little ... by- ... under ... darker ... and ... different? ...
... level ... lens ... taken ... Why not sell it some some "low/middle end" telescope company and earn some money? I do not mean to question you buissness...
Hi Tom I looked through a SV90T and expected it to have the same performance of the TEC fluorites since it was fluorite too. Around Jupiter, I could see a very...
... Overall color correction is totally dependent on the mating element plus secondarily on the aperture and focal ratio of the scope. Color correction is not...
... Greg, I have wondered why imported items in general have not gone up as much as I would have thought based on the decline of the dollar. The only reason I...
Soren, It's probably well beyond the scope of a simple post to try to delve into the science of Foucault test results interpretation...but, if you're really...
... performance ... in ... there ... Wes, A friend of mine has both versions of the Stowaways and both are great scopes but when comparing the short version...
Can anyone tell me why, when I look at some pictures that are described as coming from refractors, that I see a cross on stars that looks like a diagonal...
Tom Thanks for the info. If my hip could stand it, I'd have a larger aperture longer focal length telescope. And, I really did enjoy the FS-128 that I owned. ...
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