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Yuri Petrunin: The man behind TEC Telescopes
Thursday, December 18, 2025 by Richard Harris
When you sit down with Yuri Petrunin, founder of Telescope Engineering Company, the first thing you notice is his strong Russian accent. The second is how little he seems to care whether or not you’re impressed by it. He speaks modestly, carefully, and without pretense. He’s not trying t...
TEC launches a new website: A new era for a legendary telescope maker
Tuesday, May 13, 2025 by Richard Harris
There are few names in high-end amateur astronomy that stir as much respect as Telescope Engineering Company—better known simply as TEC. For decades, TEC has stood quietly at the top of the refractor world, crafting some of the finest apochromatic telescopes ever made. Today, TEC has take...
TEC 140 F9.6 Fluorite Doublet announced
Wednesday, November 27, 2024 by Richard Harris
At the beginning of October, Telescope Engineering Company (TEC) introduced its new 140mm F9.6 Fluorite Doublet. Originally designed with a 140mm F10.5 glass combination, the initial materials did not meet long-term reliability standards. Upon advice from the glass manufacturer that the original cho...
TEC Yellow Submarine updates
Thursday, December 14, 2023 by Richard Harris
The newly released update to the classic TEC APO160FL “Yellow Submarine” offers a refractor telescope with 160 mm free aperture and 1760 mm focal length. This updated f/11 version introduces key design changes to optimize color correction offering an apochromatic doublet lens with a fluo...