... Here is a link to a couple of Dob mounts I built for my refractors: http://members.leapmail.net/~ericj/dobmounts.html They are based on the plans in...
... the diffrence between both is like comparing a Orion 80 ED against a TEC Fluorite triplet, if you know that diffrence, then you nknow the diffrence between...
... Booby, I do not have feeling that you do not know where to get sources for knoweledge - the books are the best ones. Manufacturers are too busy to write...
... busy ... short list ... paper with ... Additionally, here is the link to the company that does equipment for MTF measurements and as well offers the lens...
E. Abbe, for example, has a very short list ... paper with ... YURI: Thanks for link about the MTF testing services. I never know how these guys perceive the...
busy ... short list ... paper with ... Hi Yuri, So far I have only seen Abbe's theoretical work derived & applied by using physical optics. Like the sine...
... using ... heard ... a math ... course his ... rays ... - So far I have found the same, some coverage of Abbe's works was found in Applied optics Vol. 5,...
I wonder if anyone on this group is using an AP-180 f9 and a 6303 chip camera? I acquired one of these scopes yesterday and I am waiting for my STL-6303 to ...
My friend Tony Donnangelo and I were fortunate enough to witness this morning's occultation of Antares (Alpha Scorpii) from his residence. It was quite cold...
... CHIP? Camera? Good grief. Ok, if you must... try Richard Crisp. http://www.narrowbandimaging.com/ic443_s2hao3_pentax150_st10_page.htm Rich...
rnapo
rnapo@...
Mar 3, 2005 4:07 pm
14399
... very ... original ... it ... in ... - I am getting a few old books next week, not originals, but in english...what ever comes I will share the info too. ...
Comet 9P/Temple 1 is 122 days from impact with the NASA Deep Impact spacecraft. On July 4th the spacecraft will smash into 9P. The impact is hopefully going...
... does not ... -I do not agree here, a seller could name/rename product the way he wont. And there is an iron logic for the LOMO lens to be caled only simple...
In a message dated 3/3/2005 10:40:04 AM Central Standard Time, yp35@... ... in ... Hi Yuri, I read the Volkmann paper in Applied Optics. It was very...
... http://tinyurl.com (Zeiss) Hi Jim, before I answer, could you give the correct link you are refering second time to? The above one does not go to Zeiss,...
Hi, Until you are actually involved with making a lens, or designing a lens, or actually get your hands wet grinding, polishing and measuring a lens, you...
... wrote: One cannot claim that only one color ... a mirror, everything else departs from that. ... Mirror? - I do not think so, if it is infolve in image...
... is not a color free, thatnks to wve nature of light and Airy formula that contains the wave length. (-: Yuri>> PLPLPLPLPLPLPLPLPL (that's a raspberry for...
I had a WO 80mm f/6 triplet (fluorite). Engraved in the lens cell was SUPER APO. Actually, it wasn't engraved in integral part of cell, but in cover. I think...
Hi Jim, do you know what ? You writing here a statement, without knowing anything ! Your statement is wrong, false and missleading, let me explain why, okay ? ...
... the ... aberrations ( ... Hi Markus, did your partners supplied any real objective color correction measurements, before called their product SAPO ? - I...
In reference to the term "superachromat" I looked up info on Zeiss'85mm T*FL Diascope - a spotting scope. Here is what is written on the quality of the lens...
... Advanced Optics System (AOS) use glass material containing fluorine ions, which provides the objective lenses with superachromatic properties>> Yes, all ED...
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