You searched for "Petzval design"
Top news results for Petzval design

Takahashi FCT-65D Triplet Refractor
Wednesday, July 9, 2025 by Richard Harris
There’s just something about a Takahashi telescope that makes you stop and look twice. It’s that mix of old-school craftsmanship and cutting-edge performance that’s hard to ignore, especially when they decide to shrink all that optical goodness down into a compact, travel-friendly ...

Ultra-Cat 76 coming soon
Friday, June 20, 2025 by Richard Harris
With the upcoming release of the Ultra-Cat 76 scheduled for July or August 2025, anticipation is building among dedicated astrophotographers and optical equipment enthusiasts. This compact but highly advanced refractor telescope is designed with a single purpose, delivering uncompromising optical pe...

Askar SQA106 review by AstroBackyard
Thursday, April 10, 2025 by Russ Scritchfield
The Askar SQA106 is a 106mm aperture refractor telescope with a focal length of 509mm and a focal ratio of f/4.8. It uses a fixed quintuplet Petzval design that includes two SD (super low dispersion) glass elements. This configuration is designed to minimize field curvature and maintain sharp focus ...

NOVAStar telescope brand emerges
Saturday, March 15, 2025 by Richard Harris
NOVAStar has entered the market as a new player in the realm of budget-friendly yet high-end APO ED refractors and other accessories. While little is known about the manufacturing company itself, 365Astronomy is launching these exclusively as a new "house brand", and they’ve already ...
