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Product description A versatile and inexpensive crosshair eyepiece with 1.25' barrel diameter for different areas of application such as astrophotography with short focal lengths, precise calibration of GoTo telescopes on stars, self-construction of finder telescopes. The crosshair has been laser etched and is very subtle. It does not interfere with the observation. The crosshairs is visible decemtly against the background. With an optional illumination unit, it is even lighter, then it shines discreetly red. Fits all APM viewfinders. Delivery: crosshair eyepiece 24mm with caps (w/o illumination) Products specifications Coating Multicoated Barrel size / Filter thread 1 1/4' with filterthread Focal length 24 mm Eyegard Rubber Field of view 55° Weight ca. 5 oz eye relief 22 mm Type of eyepiece Crosshair Eyepiece
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