Customer Feedback

Thru the 30" F/3.75, Canis Major's NGC 2359 proved a big surprise. With Oxy-3 filter, it resembled a giant ring with windswept outliers. The trade-off (with a large short F/ratio) -- collimation of the optics has to be near-perfect. A problem with the secondary's tuning was solved and "light bucket" blips returned to precise star points as the diagonal afterwards kept its tune.
-- California
The two telescopes you made for me, a 24" Newtonian (1.6" thick) and a 12.5" ultra-light, have substantial design innovations. The 12.5" F/4.8 has a plate glass mirror only 1/4-inch thick at the edge of the central perforation yet performs extremely well on the cell you designed. The tube assembly is rigid although it weighs only 25 pounds, even with the 2" focuser and substantial top end components. Your knowledgeability in telescope design and particularly of optical fabrication has given me two very versatile telescopes. They perform extremely well optically, and I have yet to exhaust their full potential.
-- Arizona
I went to a small star party last Saturday night with 20" F/5 (1.5" thick mirror) telescope. Comments went like this: You mean you use full aperture on planets? Really, at moments of good seeing there is more detail than I can describe. The independent test performed by a qualified optician established the extremely accurate figure and confirmed the accuracy of the results you supplied.
-- Florida
Just a friendly reminder to make sure I'm on "The List" for a 24" (1.6" thick mirror) Starmaster w/GOTO. I was fortunate to spend a little time with Pierre and his new 24". The optics and scope were AWESOME - best views out there of M51 (and everything else). The tracking made multi-person viewing a total snap. The scope owner could stay in a big BS session down below while a long line of people viewed from the fairly short ladder. I did track down the newly discovered pulsar XTE J1118/480. I had previously tracked it down with a 16" and a 20" and was familiar with the starfield. I couldn't believe all the "extra" stars (and an extra galaxy!) I could see easily with 24 that weren't even there in the other scopes. The pulsar is bright at about mag 12.6, but the difference in fainter stars was amazing. Sharp and tight. I'll bet the planetary images are real good too.
-- From a May/2000 Texas Star Party attendee
As you can see, the silver tube is a happenin' thing... when the sun shines on it, it glows..I saw the pulsar in M-1 (the two 16th mag. stars). Check out page 1855 of Burnham's - top picture. Actually, page 1857 - infrared picture is just about how it looks. ..Also, could see two of a string of three stars (really 4, the center are a close pair -- see page 1855, top picture) at the other side of the nebula plus the four that make a rhombus shape around it. I really have to thank you for an absolutely splendid mirror and the joy that it is going to bring. Ya really done good, man!!!
-- California
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
The process of shopping for quality optical components can be very confusing and complicated..so it's been educating, if not downright entertaining on occasion, to find out who could sell me what I needed to fulfill my initial abstract ideals. As it was, through this process of researching and calling, you and your company had an unsolicited reputation for quality and honesty...and it was for these reasons, and my own preferences towards the individual craftsman over the high production shops, that told me to take a closer look. I don't part with $1500 easily! Finally, it was my personal dealings with you, and your immeasurable and invaluable assistance with my design problems, clarifying my misunderstandings and pointing me in the right direction for other services and answers, that impressed me the most! Doing business with you has truly been a pleasure. My sincerest thanks!
-- New York
Received my 20" f4.8 mirror (1.5" thickness) and set up under clear, but cold and damp skies. I promptly split Castor, then found the planetary NGC 2371-72 in Gemini. It was clearly defined into two components and the central star (v. mag 15.55) could be held without averted vision. The Owl (M97) exhibited detail but the damp night didn't yield very dark 'eye holes'. The central star (v. mag 15.88) could be glimpsed most of the time even through all that nebulosity. Doubles were beautiful when they exhibited color differences. I could not believe how similar the views were to a 12" refractor that I've used in Ocean City. That scope is a 12" f10 and the image size is fairly similar, so quality comparisons are easy. Thank you for a caring job on a mirror that marked the finish to a three year project. I know that I made the right decision when I chose Pegasus and John Hall as my mirror maker! Maryland. P. S. Your 20" f4.8 mirror was a big hit at the DSP. There were two other 20's, 120 people and scopes from 50 mm to 20". The images were said to be the best many had seen in any 20 inch scope. "Stars snap to a tight focus" said one...You wouldn't expect the quality of star images to be competitive with a refractor, but everyone seemed to marvel that there was no tradeoff. Everyone...would ask "Is that a [Company X]?" I would reply "No, I went with Pegasus. You can't beat the personal attention and care that John puts into a mirror. His specs and testing philosophy guarantee these kind of images." Of the 50 or so scopes there, my scope and a 10 inch were said to have the best quality images. I know you produced a diffraction limited optic for me. P. S. I gave you a plug on internet:sci.astro when mirror makers came up.

I finally got around to sending you some pictures of our [22-inch] telescope. I have since added digital setting circles (Lumicon Skyvector II). I recently observed the Veil Nebula from my back yard and it was more spectacular than any photograph I've seen of this object.
-- Michigan

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