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Baader Classic Ortho Eyepieces deliver reputable planetary and lunar images with low optical distortion and exceptional contrast. Their level field, high light transmission, and precise color correction make them perfect for crucial viewing. They are constructed with a 4-element Abbe design and multi-coated glass. It is essential to use a stable and ergonomic mount with Baader's Classic Orthos, as they have been optimized for high-contrast viewing. The Sky-Watcher HAC125DX is a great alternative; it is a sturdy, portable, and accurate alt-azimuth mount. Regarding delicate eyeglass work, its silky motion and sturdy support are outstanding.
When precision optics meet environmental challenges, the Baader Classic Ortho eyepieces shine even brighter. Sharp, high-contrast planetary and lunar views, these eyepieces naturally pair well with light pollution and correction filters to deliver exceptional clarity. Due to their minimal internal reflections and optimized coatings, Classic Orthos reveal fine detail.But when used in urban or suburban skies, adding a light pollution filter can dramatically enhance contrast, especially during deep-sky sessions. Additionally, correction filters complement Ortho’s performance by fine-tuning color fidelity and suppressing unwanted chromatic noise. Together, they form a powerful visual system.
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Highlighted Products
Featured Product 1
With its ColourMagic 2" Duo-band Filter Package, Askar has changed the game for astrophotography. Color camera users may now take amazing pictures in the SII, Ha, and OIII wavelengths without buying expensive filters or monochrome cameras. The C1 filter mixes Ha and OIII, and the C2 filter mixes SII and OIII. This lets you make lovely pictures in the popular SHO palette. These filters significantly reduce light pollution by only allowing specific wavelengths through, with a peak transmission of 90% in each band.
Featured Product 2
The Baader 2" Contrast Booster Telescope Filter enhances contrast and diminishes skyglow, making it ideal for observing the Moon and planets. Combining specialty Neodymium glass and sophisticated coatings eliminates the blue defocused haze produced by achromatic refractors. These materials allow over 95% of the visible light to flow through. This filter makes it easier to see Jupiter and Mars by boosting surface details (like the Great Red Spot) and color contrast. It has a standard thread size and is compatible with Baader UV-IR-Cut Filters, making it ideal for digital photography.
Featured Product 3
The Celestron 1.25" Lunar & Planetary Color Filter Set is ideal for novice astronomers and is compatible with most telescopes. This versatile set includes four filters: Wratten #12 Deep Yellow, #21 Orange, #80A Light Blue, and a #ND-96-0.3 Neutral Density Filter. The #12 Yellow is incredible for smaller telescopes, while the #21 Orange sharpens Mars' boundaries and enhances Jupiter and Saturn's details. The #80A Light Blue boosts contrast in Jupiter's cloud belts, and the ND-96-0.3 reduces brightness without altering color. Each filter has a 26 mm clear aperture, is mounted in a durable aluminum cell, and has a protective storage case.
Featured Product 4
Affordable, high-quality orthopaedic eyepieces like the Baader 18 mm Classic Ortho 1.25 Eyepiece are available. The Jena 0.965" Orthoscopics from Zeiss serve as the basis for these eyepieces, which have all blackened-edge optics and a complete 50° field of view. Compared to other planetary eyepieces, these ones provide better sharpness and contrast thanks to Baader's in-house expertise and Zeiss optical designs. The unique recessed volcano top provides eyelash clearance and a pleasant eyepoint.
Featured Product 5
An inexpensive and value-packed alternative is Baader's Orthoscopic Eyepiece Set, perfect for those requiring top-notch performance. Classic Ortho Eyepieces in sizes 6, 10, 18, and 32 mm are included in this set, which also consists of a 2.25x Baader Q Barlow, a Q-Turret, a quad eyepiece revolver, and storage in the form of Baader Astro Box #1. A less expensive substitute for the original Baader orthoscopic eyepiece, these orthoscopic eyepieces work just as well. Zeiss Jena 0.965" orthoscopics served as the basis for the design and manufacturing specifications, including a 50 ° field of vision (FOV) and darkened optic borders for improved contrast.
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The Baader Classic Ortho (BCO) Eyepieces are a tribute to the revered orthoscopic design, offering astronomers a blend of vintage performance and modern enhancements. Crafted for visual purists, these eyepieces are optimized for sharpness, contrast, and comfort, particularly in planetary and lunar observation. But what exactly makes the Classic Ortho lineup so appealing to discerning stargazers?
Baader is improving the conventional orthoscopic plan using cutting-edge technologies. Reduce internal reflections and improve light transmission with the Classic Ortho series of eyepieces, which have completely multi-coated lenses and darkened lens edges. This series has 6, 10, 18, or 32 mm focal lengths. All observers will greatly appreciate the resultantly darker sky background and crisper targets, whether they are novices or seasoned pros.
Could these be the orthoscopic eyepieces that redefine classic performance for the modern era? For many visual astronomers, the answer is a clear and focused yes. Comfort is often concerned with high-magnification orthoscopic eyepieces, particularly due to their typically short eye relief. Baader addresses this with thoughtful design tweaks. The rubber eyecups, removable in some models, offer added comfort and help block stray light. Even at shorter focal lengths, such as 6mm, the viewing experience remains manageable. Could this be the balance between ergonomics and performance that orthoscopic fans have been waiting for?
What about mechanical quality? The Baader Classic Orthos exhibits superb build quality, featuring machined metal housings with precision threading and smooth barrel finishes. Their lightweight design is also ideal for balancing small to mid-size telescopes, especially those mounted on manual alt-azimuth or equatorial systems. With such minimal weight, you can swap eyepieces without rebalancing your optical tube, a small but significant advantage in the field.
Another inclusion is the filter-ready 1.25" barrels across the lineup. This allows users to attach standard astronomy filters, neutral density, planetary, or color filters, without needing adapters. Whether you're improving contrast on Mars or toning down the glare of the Moon, the filter compatibility enhances the overall utility of the BCOs.All the eyepieces are parfocal, or very close to it, meaning minimal refocusing is needed when swapping between them.
Optical purity and practical utility are the principles behind creating the Baader Classic Ortho Eyepieces. They become their own when clarity, contrast, and resolution are paramount. Their performance more than makes up for the lack of unique glass varieties and ultra-wide fields. Experience the night sky through lenses designed for detail with the BCO series.
The affordability of the Baader Classic Orthos is another appealing factor. Compared to premium planetary eyepieces with similar specifications, the BCOs deliver a high performance-to-price ratio. This makes them especially attractive to visual astronomers seeking optical clarity without breaking their budget.
Interestingly, the 32mm Plössl in the series slightly diverges from the orthoscopic format but is included for those seeking low-power, wide-field views. It complements the shorter focal length eyepieces by enabling users to frame large objects like the Andromeda Galaxy or the Pleiades in a single view. What better way to complete a visual set than with both wide and narrow perspectives using the same design philosophy?
In terms of performance, these eyepieces excel under good seeing conditions. Observers frequently report enhanced resolution in planetary features, such as the festoons on Jupiter or the Cassini Division in Saturn’s rings. They also perform admirably for double-star observations, delivering clean separations with pinpoint stars, thanks to the tight on-axis resolution and minimal chromatic aberration.