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What PEGASUS OPTICS customers have to say! - Continued |
I have been using the 16-inch F/5 mirror (1" thickness) for the last five years, and I am absolutely delighted with the incredibly consistent optical performance every time I use it. The dry, extremely dark, and crystalline Arizona skies demand more than any other place in the continental United States, and I can say that your optics not only meet those demands, but far exceed them. I have even used my telescope under those rare observing conditions which would allow magnifications over 1000, and star images were still pinpoints! In my 19 years of observing, the only time I have seen optical performance to match that of my own telescope, was on telescopes with optical trains designed and executed by you. I thank you for providing me with the ultimate in high quality optics. Arizona
Thank you for the superb 18.5" (1.6" thick) mirror. It outperforms any telescope we have seen through in Texas or Riverside, save a couple of 20's and 25's, and I'm not sure the 20's did any better. Several of my astronomy friends who have a great deal of experience at the eyepiece said the images were the best they had seen with a telescope of its size or somewhat larger - to include many 20" telescopes. Needless to say, I am pleased. Pennsylvania
I had four telescopes before, but now, with your 18.5" primary, objects like the Helix Nebula, the Horsehead Nebula, I was able to pick up for the first time. The resolution of globular clusters and also open clusters is the most wonderful experience. Cassini's Division breaks out with clarity I have never experienced before. ..The mirror is everything and even more than you told me before I ordered it. You can be proud of your precision work. California
This 15" (tapered, .74" edge thickness) mirror has exceeded all my expectations. The image through my scope is nearly equal to the center photo of the 3 processed CCD images of Jupiter, p. 91 of Apr 92 Astronomy. Kansas
I am extremely pleased with the performance of the 18.5" F/4 (1.6" thick) mirror. There was no trace of astigmatism at any aperture. At full aperture using a 133 line diffraction grating with 3 lines visible inside and outside of focus, the lines were straight right to the edge. My independent Foucault test results indicated wavefront errors of 1/6 on the 9 zone [Coude mask] and 1/10 on the 8 zone. My readings were very consistent with the test results you provided with the mirror. On a night of excellent seeing, Jupiter was very impressive... belts, ovals and festoons were easily visible at full aperture. I was surprised to find that the detail on Jupiter was easier to observe at full aperture. The Orion nebula was spectacular, with pinpoint star images right to the edge of the field. The fifth and sixth stars in the Trapezium were easily visible and very sharp even with a 16 mm eyepiece. In fact, the fifth and sixth stars were still visible with a deep sky filter. The fact that all these observations were made with an F4 focal ratio mirror clearly demonstrates your ability to produce fine optics. I know this mirror will provide me with many enjoyable years of observing. Pennsylvania
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PEGASUS OPTICS
16426 Martins Ferry
San Antonio, TX 78247
(210) 267-9937 | | |
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