Tack Sharp Stars: Overcoming Eyesight Astigmatism

Simulated image of DIOPTRX™ astigmatism correction. Your experience may vary.

This guest blog post is written by Phil Ressler, a longtime amateur astronomer who lives in Los Angeles, though his observing life began on the east coast. Phil is a veteran software industry executive, currently CEO of Sixgill, LLC.

I had never seen pinpoint or round stars — apart from observing our round Sun.

I’m old enough to remember when “pinhole” eyepieces with “soda straw” views defined what a telescope offered to the average amateur astronomer. More than anyone, Al Nagler, and more than any company, Tele Vue, changed that by opening up the sky and making it easier to explore through wider field viewing. Mr. Nagler and his company also showed us that a relatively rich field refractor could not only capably serve as an amateur’s sole telescope: it is the best telescope to own if you’re only having one. We can thank Al Nagler and Tele Vue for laying the foundation for the way visual astronomy is pursued today. Yet despite all that, until I tried a DIOPTRX™ on my 22mm Panoptic last year, I had never seen pinpoint or round stars — apart from observing our round Sun. I’ve been observing the sky through scope optics since 1961, my astigmatism never absent. For people like me, DIOPTRX™ is arguably Tele Vue’s most essential product, because it makes all of Al Nagler’s original work in eyepieces and refractors unmistakably worthwhile to the astigmatic viewer.

Continue reading “Tack Sharp Stars: Overcoming Eyesight Astigmatism”

Cherry Springs Star Party: Afterglow with the NP101

What I like about star parties is meeting and speaking to all the fine people that travel long distances for great observing experiences.  Sometimes the conversations continue after the event. This is an excerpt from a note I received from Bob Danko, of Warren Ohio, soon after returning from the Cherry Springs Star Party this June. Continue reading “Cherry Springs Star Party: Afterglow with the NP101”

Cherry Springs 2017 in Review

Al Nagler at Cherry Springs Star Party 2017.

The ancient Allegheny Plateau formed from a long-ago regional uplift in the Paleozoic Era. Over the eons, rivers and minor waterways eroded the plateau to form mountainous terrain. The plateau arcs from central New York, through the top-half of Pennsylvania, dives though the heartland of Ohio and West Virginia, and terminates in Kentucky. Smack in the middle of this arc is Cherry Springs State Park in Pennsylvania. Continue reading “Cherry Springs 2017 in Review”

About the NEAF Night Vision Demonstration

Customer brought an original 13mm Nagler to try. Worked great with the Night Vision monocular.

NEAF has always been a great show for us.  It’s a wonderful chance for people to get their hands on our equipment and really see and feel the care and quality we put into our products.  While five of us were constantly busy showing scopes, making eyepiece recommendations, and enjoying talking amateur astronomy, no one was busier than my father.  He was giving show-goers a glimpse of what our eyepieces, adapted to night vision, could do. Continue reading “About the NEAF Night Vision Demonstration”