Orion Sirius Plossl 25mm (Pre-owned)

Focal Length: The Sirius Plossl 25mm eyepiece has a focal length of 25mm. This determines the magnification when used with a telescope.

Apparent Field of View: It typically offers a comfortable apparent field of view of around 52 degrees. This provides a moderately wide view of the night sky.

Eye Relief: The eyepiece provides adequate eye relief, making it comfortable for extended viewing sessions. This is beneficial for observers who wear glasses while observing.

Optical Design: Plossl eyepieces, including the Sirius series from Orion, are known for providing good image quality with sharpness and contrast. They are suitable for observing a variety of celestial objects, including planets, the Moon, star clusters, and some deep-sky objects.

Build Quality: Orion Sirius Plossl eyepieces are well-regarded for their solid construction and durability. They are designed to withstand regular use and provide reliable performance.

Compatibility: The Sirius Plossl 25mm eyepiece is designed to fit telescopes with a standard 1.25-inch focuser or diagonal. Ensure your telescope is compatible with 1.25-inch eyepieces before purchasing.

Usage: With its 25mm focal length, this eyepiece is particularly useful for observing large deep-sky objects like nebulae and galaxies, as well as for providing wider views of star fields and clusters. It can also be used for low to moderate magnification views of planets and the Moon.