William Optics GuideStar 61

The William Optics Guide Star 61 is a compact and versatile apochromatic refractor telescope designed for both autoguiding and wide-field astrophotography. With its high-quality optics and portable design, it offers excellent performance for a variety of astronomical applications.

Additional accessories may be required for optimal use in astrophotography or autoguiding setups. Check compatibility with your existing equipment before purchase.

Optical Design

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Features a 61mm aperture apochromatic triplet lens system, utilizing high-quality FPL-53 glass to minimize chromatic aberration. This design ensures sharp, color-true images across a wide field of view, making it ideal for both stellar guiding and capturing expansive celestial vistas.

Construction

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Built with a durable and lightweight aluminum body, featuring a sleek white finish with gold accents. The robust construction ensures stability during use while keeping the overall weight manageable for portable setups.

Focal Length and Ratio:

With a focal length of approximately 360mm and a fast focal ratio of f/5.9, the Guide Star 61 provides a wide field of view and excellent light-gathering ability. This makes it particularly suitable for capturing large deep-sky objects and for efficient autoguiding.

Versatility

Designed to excel in multiple roles, the Guide Star 61 can serve as a high-quality autoguiding scope for larger telescopes or as a primary imaging instrument for wide-field astrophotography. Its compact size also makes it an excellent choice for travel and portable setups.

Focuser

Equipped with a precise rack-and-pinion focuser, likely featuring a dual-speed design for fine focus control. This allows for accurate focus adjustments, critical for both guiding accuracy and image sharpness in astrophotography.

Mounting and Compatibility

Includes standard mounting options, likely featuring a Vixen-style dovetail plate for easy attachment to a variety of mounts. The telescope is designed to be compatible with common astrophotography accessories, including field flatteners, filter wheels, and various camera systems.

Portability

With its compact size and lightweight design, the Guide Star 61 is highly portable, making it an excellent choice for astronomers who frequently travel to dark sky sites or need a versatile instrument for various observing locations.