Guiding Eyepieces

Guiding (or reticle) eyepieces are mandatory for guided astrophotography. They keep a guide star stationary during long exposures to avoid star trailing. #94169 and #94170 require an illuminator — choose from models #60001 and #60011.

12mm Kellner Reticle Eyepiece: 11/4" – #94170

The reticle pattern is a .0075" spaced double line system. The optics are fully coated and offer good eye relief. This type of reticle pattern allows you to position the guide star in the middle square or at the intersection of two lines,

whichever is easier for you. It has a 42° apparent field of view. Clockwise: #94171, #94169, #94170

10mm Plössl Reticle Eyepiece: 11/4" – #94169

This five element guiding eyepiece has the same pattern as the Kellner design above. The optics are multi-coated for increased contrast and have long eye relief. The high power is ideal for guiding and it has a 50° apparent field of view.

Micro Guide Eyepiece: 11/4" – #94171

This multi-function guiding eyepiece features a laser- etched reticle with a built-in, battery illuminator. The eyepiece is a multicoated 12.5mm Abbe (four element)

Orthoscopic. Usage possibilities include: direct guiding on stars outside the center of the field of view; greatly improved off-axis guiding to capture much fainter, sharply focused guide stars without reducing limiting magnitude; and measuring position angles and separation of double stars.

FPO

The Micro Guide Eyepiece is totally free of internal

reflections and offers sufficient eye relief for the reticle to be viewed easily, even with eyeglasses. Its finely etched micrometer scale has gradations 50 microns apart and 15 microns wide. Included are: the eyepiece, built-in cordless illuminator with adjustable brightness control, batteries and instructions. The apparent field of view is 42°.

Standard Illuminator — #60011

An adjustable brightness red LED which can be used in Celestron (and most other manufacturers) guiding eyepieces and the Polaris finderscope.

Pulstar Illuminator – #60001

Celestron’s Pulstar Illuminator is an innovative new design that takes pulsing illumina- tors to a new level of performance. Not only does it allow for easy adjustment of pulsing rates and timing intervals, it also has an adjustable brightness level and important automatic shutdown feature to save you the frustration of a dead battery.

The Pulstar Illuminator improves contrast while locating and using guide stars for CCD imaging and astrophotography, and helps in locating objects during viewing sessions. Fits most reticle eyepieces and Polaris finderscopes. Battery is included. Made in the USA.

93517, 93515, 93518 specifications

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