Post by Ales - iStar Optical on May 1, 2018 18:34:50 GMT -5
Hello dear fellow amateur astronomers,
Some 4 years ago iStar Optical designed a truly revolutionary 180mm F/6 astrograph. The design achieves true apochromatic 3-color crossing without the use of expensive ED glass like FPL-53 or FPL-51. All this in a subcompact design with a perfect balance/weight distribution. The problem with the older version was a slight violet halo as well as overall mass/weight of the glass.
Couple years later I talked to Mike Jones (ex Lockheed Martin optical designer), I showed him our design and asked him for help. Some weeks later Mike presented me with a greatly improved version of our original idea. Weight reduced to nearly half and improved image quality up to 45x45mm sensor size!
It was always my dream to design and produce a truly unique apochromat in this aperture class capable of good quality images. Running at very fast F6, this system offers a clear advantage over any other 7" APO on the market.
The core of the system is a widely air-spaced quadruplet with built-in 4" triplet corrector/field flattener. Only fairly common and reasonably inexpensive glass types are being used resulting in projected retail price being only in $6,900 range.
For this particular astrograph, I designed a special type of lens cell capable of increasing lens assembly time and virtually eliminating "pinched lens" problems in transport or rough handling.
If anyone would be interested in such instrument please contact me directly at email@example.com with a copy to firstname.lastname@example.org