Old Takahashi refractors are still amazing

Before the rise of modern apochromatic optics, before the dominance of computer-assisted mounts and carbon fiber tubes, the amateur astronomy world was lit by a different kind of star. In the 1960s and 1970s, Japanese manufacturers quietly built a reputation for crafting precision refractors that defined an era. These instruments, typically small in aperture but long in focal length, were achromatic refractors, designed to reduce chromatic aberration using simple lens designs and long tubes rather than exotic glass elements. Though many were modest in appearance, their optical performance and mechanical build quality continue to surprise seasoned observers to this day.

Are old Takahashi achromats any good? Old Takahashi refractors are still amazing

Brands like Swift, Monolux, Unitron, Tasco, and Sears all distributed refractors during this golden era, most often rebranded versions of optical systems produced by Japanese factories such as Royal Astro Optical Industries, Yamamoto, and Towa. These telescopes were typically made with heavy-duty castings, brass fittings, and finely polished lenses, often housed in long, slender tubes. One of the most iconic examples is the Tasco 7TE, a 60mm f/15 refractor that remains a common vintage find and is celebrated for its pinpoint star images and rock-solid mounts. Its massive equatorial mount and wooden tripod legs made it feel like a much more serious instrument than many modern counterparts in the same aperture class.

Unitron, meanwhile, established a premium reputation that still echoes through the community of vintage telescope collectors. Their 60mm and 75mm models, particularly the Unitron 114 (60mm f/15), became legends not just for their optical sharpness, but for the level of craftsmanship in every detail, from the smooth action of their slow-motion controls to the perfectly machined eyepiece holders. Some Unitron setups even came with solar projection screens and altazimuth or equatorial mounts so robust that they outlived the optical tubes themselves.

Another class of early refractors that quietly stood apart were those produced by Takahashi. Best known today for their ultra-premium apochromatic triplets and astrographs, Takahashi's origins are more humble. In the late 1970s, the company produced a line of achromats including the TS65, a 65mm f/12.4 refractor that embodied the same fastidious attention to detail seen in their modern products. The TS65 was never mass-distributed in the U.S. the way Unitron or Tasco models were, and it remained largely a domestic Japanese product, found occasionally through collectors or auction sites abroad.

What sets many of these early refractors apart, especially those from Japan, is the sense of care that went into their production. Their lens cells were often precisely collimated at the factory, many using foil spacers for air-spaced doublets that could be disassembled and cleaned without losing alignment. Long focal ratios, commonly f/12 to f/16, helped mitigate chromatic aberration, a critical concern for achromats that lacked modern ED or fluorite elements. The result was often startlingly sharp planetary and lunar views, especially when paired with the high-contrast orthoscopic eyepieces that were standard at the time.

Even accessories from this period tell a story of quality. Diagonals, finderscopes, and eyepieces were frequently made of solid metal and finished to a standard that feels luxurious compared to contemporary plastic components. Eyepiece cases, mount knobs, and even wooden tripods were designed with durability and tactile satisfaction in mind. Some models came in ornate carrying cases, often lined with velvet or foam, and packed with printed manuals, star charts, and maintenance tools. These weren’t just tools, they were heirlooms in the making.

One particularly telling example of this era’s craftsmanship is the inclusion of erecting prisms that, unlike today’s budget offerings, were often optically excellent. Even finder scopes, typically relegated to afterthoughts in modern budget refractors, were fully functional and often sharp enough to identify and center faint targets unaided. The attention to detail extended across the system, from the silky action of the slow-motion controls to the quality of the paint on the tube itself. These telescopes were not just scientific instruments, but showcases of pride and precision manufacturing.

Some observers today mistakenly associate names like Tasco with poor quality due to the brand's decline in the 1980s and 1990s, when it transitioned into a purveyor of mass-produced plastic scopes. But this was not always the case. Early Tasco refractors, especially those made in the 1960s and early 70s, were often rebadged versions of Royal Astro or Towa optics. When paired with wooden tripods, brass fittings, and heavy-duty equatorial mounts, they offered a surprisingly serious platform for both beginner and advanced observers alike. Many of these vintage instruments remain fully functional after decades of use.

While most vintage achromats fell within the 60 to 75mm aperture range, some brands pushed boundaries with larger models. Unitron, for instance, offered 3-inch and 4-inch achromats, which were considered serious observatory-class equipment in their day. With focal lengths exceeding 1500mm, these scopes were purpose-built for lunar and planetary observation. They demanded stable mountings and careful collimation, but in the right hands, they produced images that could rival modern optics of similar aperture.

What remains remarkable about these early refractors is their staying power, not just in physical form, but in performance. When properly maintained, cleaned, and collimated, many continue to deliver high-contrast views of the moon, planets, and double stars that rival or exceed modern entry-level scopes. And in some rare cases, such as the Takahashi TS65, the telescope doesn't just hold its own, it transcends its age, showing what happens when craftsmanship, design, and optical know-how combine in perfect harmony. These are not relics, but reminders of a time when even the smallest telescopes were made to last a lifetime.

Rediscovering the Takahashi TS65 and the golden age of Japanese refractors

In Ed Ting's recent video he explored the Takahashi TS65, a 65mm f/12.4 refractor telescope from 1978. He undertakes a hands-on assessment of this vintage optical instrument to answer a question that has intrigued him for decades: whether the early, pre-ED glass Takahashi achromats hold any real value compared to their modern counterparts or even other vintage Japanese scopes.

Ting sets the stage by acknowledging the relative rarity of these early Takahashi achromats in the United States. While they occasionally appear on Japanese auction sites like Zen Market, the logistics, exchange rates, shipping, and risk, have historically dissuaded him from pursuing one. That changed when a viewer living temporarily in Japan contacted Ting after purchasing two of the TS65 units. Upon returning to the U.S., the viewer offered to send one to Ting, an offer he gladly accepted. A week later, a hefty 37-pound casket-style case arrived at his door.

This sort of case, Ting notes, was once standard among quality entry-level Japanese telescopes in the 1970s. Brands like Tasco, Swift, Mayflower, Monolux, and even Sears, were known for rebadging high-quality Japanese optics during that era. Ting nostalgically recalls a time when entry-level telescopes were genuinely well-made, in contrast to the cheaper, plastic-heavy models that flooded the market starting in the 1980s. Brands like Tasco, for instance, devolved into purveyors of low-quality Chinese imports by the end of the decade. Against that backdrop, Ting sought to find out whether the early Takahashi offerings stood apart from their peers or if they merely benefited from a prestigious nameplate.

Restoring the TS65: Craftsmanship, challenges, and creative solutions

Upon opening the case, Ting is immediately struck by the craftsmanship. The telescope shows consistent Takahashi design language, with styling cues, such as the knobs and compression rings, that persist even in their modern offerings. The instrument he received is dated to 1978 based on the nameplate, and despite its age, the cosmetic condition and tactile quality are impressive. Even small components like the screw-off caps for the finder scope and the visual back are better than they need to be. The mount feels over-engineered and precision-built, another marker of Takahashi’s commitment to quality.

The included accessories speak volumes. The eyepiece set comes with a 25mm Kelner, a 12.5mm orthoscopic, and a 9mm Kelner, all housed in a beautifully crafted case. Though standard for the time, the accessories appear unusually well-made. Ting is especially pleased with the 0.965" diagonal, something he had long sought in high quality. He also singles out the erecting prism, an often overlooked or cheaply made part, which in this case exudes the same meticulous craftsmanship seen throughout the scope.

However, the telescope wasn’t without issues. Two significant problems were immediately apparent: the lack of tripod legs and mold on the objective lens. Ting tackled both with help from his astronomy club members and a lens-cleaning expert named Mike. One club member went so far as to suggest that the mold had irreparably damaged the coatings and potentially even the optical surfaces, recommending that Ting discard the scope altogether. But Ting, unwilling to give up on such a promising instrument, opted instead for a full lens disassembly and cleaning.

Disassembling a 1978 lens cell proved difficult, with various rings and retainers stubborn from decades of dormancy. Mike demonstrated a careful cleaning method involving alcohol and proper lens orientation marking, done in pencil to avoid dissolving marks during cleaning. Once the lenses were separated and cleaned, including the removal and later replacement of foil spacers, the visible mold was gone, though some permanent damage remained. Ting also took the precaution of thoroughly disinfecting the case and interior of the tube with Lysol, practically emptying the can in the process.

To address the missing tripod legs, Ting repurposed legs from a previous telescope project involving a Galileoscope. Ironically, this ad hoc solution worked surprisingly well and even looked appropriate. The lighter weight of the Galileoscope tripod was a drawback in terms of stability, but it was adequate for initial testing.

Optical excellence and lasting legacy of the Takahashi TS65

From the moment Ting first peered through the restored TS65, he knew it was exceptional. Over decades of experience, he’s used and reviewed countless vintage scopes, but this one stood out immediately. The optical performance was strikingly good: stars appeared sharp and high in contrast, and color fringing, normally a major issue with achromats, was shockingly minimal. Using a 7mm Nagler eyepiece, Ting even captured shadow transits on Jupiter with ease.

The explanation for the low chromatic aberration, Ting speculates, may lie in the lead glass used during that period. Though lead glass has fallen out of favor due to environmental and manufacturing concerns, its optical properties in the hands of a skilled designer might have helped mitigate false color. Whatever the reason, the TS65 produced images that defied expectations for a vintage achromat.

Intrigued, Ting pushed the limits of the telescope further by using it with planetary imaging cameras, including the monochrome ASI 120MM-S and the color ASI 662MC. Typically, achromats perform poorly under the scrutiny of planetary imaging due to their inherent chromatic issues. Yet even here, the TS65 delivered. Jupiter images showed minimal color fringing, and lunar images looked excellent.

To contextualize the Takahashi's performance, Ting brought out two other vintage refractors: the Tasco 7TE and the Unitron 114. The Tasco is one of the most common vintage telescopes and a good reference point, while the Unitron enjoys a stellar reputation for both build and optical quality. Ting also revisited the Unitron’s alt-azimuth mount, which, while classic, felt dated compared to more modern options.

Over multiple observing nights, Ting formed a consistent opinion. While both the Tasco and the Unitron delivered solid performances, ranging from good to very good, the TS65 simply operated on another level. It outperformed its peers in optical clarity, mechanical stability, and overall usability. The mount was smoother, the finder scope significantly better, and the overall build quality unmistakably superior.

Despite the less-than-scientific nature of the comparison, differing apertures, focal ratios, and varied states of preservation, the trend was clear: the Takahashi TS65 was not just another 1970s Japanese refractor. It was something special, an outlier in a sea of good instruments. What had started as a curiosity turned into genuine admiration. Ting even began to consider acquiring a genuine set of Takahashi tripod legs to complete the setup, though he acknowledged the market for these items is erratic, with prices ranging wildly between $150 for a complete setup and $300 for just the legs.

In closing, Ting confessed his initial assumption had been that the TS65 would be more or less equivalent to other Japanese achromats of the same era. That notion was thoroughly disproven. The TS65 offered a rare combination of mechanical precision, optical performance, and design consistency that elevated it well beyond the norm. So much so that what began as a vintage oddity intended for display on his sun porch might now become part of his regular observing rotation. Experienced astronomers and beginners alike have praised its views, and Ting sees it as an ideal complement to his main Dobsonian setup.

The Takahashi TS65, then, is more than just an old telescope. It’s a reminder of a time when even entry-level instruments could be built with care, precision, and pride. And for those lucky enough to come across one, especially in good condition, it’s a compelling case for the enduring value of vintage Takahashi achromats.

Are old Takahashi achromats any good? Review of the Tak TS65, 65mm f/12.4 refractor from 1978