Skip to content
Daystar 62° 25mm Ortho Eyepiece - 1.25"

Daystar 62° 25mm Ortho Eyepiece - 1.25"

by Daystar Filters
SKU DAY-EP25WA
CA$139.00 - CA$139.00
CA$139.00
CA$139.00 - CA$139.00
CA$139.00
Price Match Policy!
  • 25mm Focal Length
  • 62° Apparent Field of View
  • 1.25" Barrel Diameter
  • Orthoscopic Optical Design
  • Internally Baffled for High Contrast
1 in stock
Qualifies for FREE Shipping in Canada on orders over $500.
Visual Simulator Preview
Visual Simulator Instant FOV Preview

Preview your eyepiece's FOV

Simulate the exact field of view of the Daystar 62° 25mm Ortho Eyepiece - 1.25" with your specific telescope.

Launch Visual Assistant
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Daystar 62° 25mm Ortho Eyepiece - 1.25"

    The Daystar 62° 25mm Ortho Eyepiece combines the high-contrast, sharp-on-axis views of a classic orthoscopic design with a modern wide field, fitting any standard 1.25" focuser. Its 62° apparent field of view offers a significantly more immersive window than traditional orthoscopics, making its 25mm focal length ideal for framing the full solar disk or expansive lunar landscapes.

    The 62° Orthoscopic: A Wide-Field Take on a Classic Design

    Orthoscopic eyepieces are renowned for their high light transmission and freedom from distortion, delivering some of the purest images possible. The Daystar 25mm Ortho builds on this legacy by expanding the apparent field of view to 62°, providing a wider, more comfortable viewing experience without sacrificing the core optical discipline of the design.

    Optimized for Solar: 25mm Focal Length and High-Contrast Baffling

    Engineered specifically for solar observation, this eyepiece features meticulous internal baffling. This design minimizes internal reflections and scattered light—a critical factor when viewing the intense brightness of the Sun—to produce a dark background and maximize contrast on subtle solar features like prominences and surface granulation.

    The 25mm focal length provides a versatile low-to-medium magnification in most telescopes, perfect for observing the entire solar disk within a single field of view when used with a Daystar filter system. This makes it an essential tool for monitoring solar activity or simply enjoying a full-disk white-light or H-alpha view.

    Daystar 62° Ortho vs. Traditional Eyepieces: A Wider Context

    While a traditional 25mm orthoscopic eyepiece delivers exceptional on-axis sharpness, its field of view is typically limited to around 42°. A standard 25mm Plössl offers a slightly wider 52° field. The Daystar 62° Ortho surpasses both, providing a panoramic perspective that makes finding and tracking objects easier while creating a more engaging "spacewalk" feel.

    • vs. Traditional Orthoscopic: The Daystar provides nearly 50% more field area, giving valuable context around the target without requiring you to move the telescope.
    • vs. Plössl: The Daystar's orthoscopic design and enhanced baffling deliver higher contrast, a noticeable benefit in the demanding conditions of solar observation.

  • Why is the Daystar 25mm eyepiece called an "Ortho" if it has a 62° field?

    This eyepiece uses a modified orthoscopic optical design that maintains the high-contrast and low-distortion characteristics of the original while incorporating elements to expand the apparent field of view to a modern 62°. It offers the benefits of an ortho with the immersive feel of a wider-field eyepiece.

    How does the Daystar 25mm Ortho perform for solar observing in a Daystar Quark?

    It is an ideal match. The Daystar 25mm Ortho provides a comfortable, full-disk view of the Sun in many refractors when paired with a Quark. Its internal baffling is designed to handle the high-brightness environment of H-alpha solar viewing, maximizing contrast on prominences and surface detail.

    Is the Daystar 25mm Ortho eyepiece good for anything besides solar?

    Absolutely. While optimized for solar, its high-contrast, sharp optics make it an excellent eyepiece for lunar and planetary observing. The wide 62° field is also very useful for framing bright deep-sky objects like the Orion Nebula (M42) or the Hercules Cluster (M13).

    What is the benefit of internal baffling in the Daystar 25mm Ortho?

    Internal baffling consists of sharp-edged rings and matte-blackened surfaces inside the eyepiece barrel. These features trap stray light and prevent it from reflecting off internal surfaces into your eye. This significantly darkens the background sky and increases image contrast, which is especially important for seeing faint details on bright objects like the Sun or Moon.

    Will this 25mm eyepiece show me the full solar disk in my 8" f/10 SCT?

    Yes. In a typical 8" f/10 Schmidt-Cassegrain with a 2000mm focal length, the Daystar 25mm Ortho will provide 80x magnification. This yields a true field of view of approximately 0.77°, which is more than enough to comfortably frame the entire solar or lunar disk (which are both about 0.5° in diameter).

    How does the Daystar 25mm Ortho compare to a standard 25mm Plössl eyepiece?

    The Daystar 25mm Ortho offers two main advantages over a standard 25mm Plössl. First, its 62° apparent field is noticeably wider than the typical 50-52° of a Plössl. Second, its orthoscopic design and specialized internal baffling provide higher image contrast, making it superior for detailed solar and planetary observation.

  • Focal Length 25mm
    Apparent Field of View 62°
    Barrel Size 1.25"
    Optical Design Orthoscopic
  • Daystar Filters Warranty