Binorum Kellner 6 mm Eyepiece 1.25

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Binorum Kellner 6mm 50° 1,25″ Eyepiece

Article No.: 77038
Manufactured by: Binorum
Shipping weight: 0.07 kg

Our price: 24.30 €

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This product is available in the following variants:
Binorum Kellner 6mm 50° 1,25″ Eyepiece	24.30 €
Eyepiece Binorum Kellner 10mm 50° 1,25″	24.50 €
Binorum Kellner 15mm 50° 1.25″ Eyepiece	24.95 €
Binorum Kellner 20mm 50° 1.25″ Eyepiece	25.15 €
Binorum Kellner 25mm 50° 1.25″ Eyepiece	25.15 €

Kellner 6 mm Eyepiece 1.25"

The Kellner 6 mm eyepiece is a great choice for anyone who wants to get more enjoyment from their telescope without spending a fortune. With a comfortable 50° field of view and a standard 1.25-inch eyepiece barrel, it fits most popular telescopes and delivers clear, easy-to-view images. Its classic optical design has been trusted by generations of amateur astronomers and remains popular thanks to its excellent balance of performance and price.

This eyepiece is suitable for both refractor and reflector telescopes with aperture sizes of approximately 60 to 114 mm. It is an ideal option for observing the Moon, brighter planets, and selected deep-sky objects such as star clusters and nebulae. The 6 mm focal length provides higher magnification, allowing you to see more detail on planetary surfaces and lunar features while still keeping the image comfortable to view.

Thanks to the standard 1.25" barrel size, compatibility is simple and hassle-free with most focusers and star diagonals. Whether you are just starting out or looking to expand your basic telescope setup, this eyepiece offers a reliable and budget-friendly way to improve your observing experience and discover more details in the night sky.

Specifications

Type of eyepiece: Kellner

Focal length: 6 mm

Connection type: 1.25″

Apparent field of view: 50°

Telescope parameters using this eyepiece

Aperture mm

Focal length telescope mm

Specifications:

Magnification:

Telescope magnification is calculated by dividing the telescope's focal length by the eyepiece focal length. A Barlow lens also affects magnification: the power increases according to the Barlow's multiplication factor.

Field of View:

The field of view is the angular size of the sky area visible through the telescope with a given eyepiece. It depends on both the magnification and the eyepiece's apparent field of view. For comparison, the Moon's average apparent diameter is 0° 31' 5" (0.518°).

Exit Pupil:

The exit pupil is the diameter of the light beam that exits the eyepiece and enters your eye. A larger exit pupil produces a brighter image. Exit pupil is calculated by dividing the aperture diameter by the magnification.

Focal Ratio:

The focal ratio (also called f-number or f-stop) is the ratio of the telescope's focal length to its aperture diameter. Telescopes with focal ratios from f/4 to f/6 are typically called "fast" telescopes, suitable for both visual observation and astrophotography. Telescopes with focal ratios between f/6 and f/15 are better suited for visual observation than photography, and generally make it easier to achieve higher magnifications.

Resolution (Dawes Limit):

Resolution is the angular size of the smallest details and objects that can be distinguished through this telescope under excellent observing conditions. This theoretical limit assumes perfect optics and atmospheric conditions.

Limiting Magnitude:

This is the faintest star magnitude visible through this telescope under excellent observing conditions with dark, clear skies and a fully dark-adapted eye.

Magnification with this eyepiece

330

360

400

420

450

480

500

600

650

660

700

750

770

800

55x

60x

67x

70x

75x

80x

83x

100x

108x

110x

117x

125x

128x

133x

880

900

920

1000

1200

1250

1400

1500

1800

2000

2350

2800

3000

3910

147x

150x

153x

167x

200x

208x

233x

250x

300x

333x

392x

467x

500x

652x

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Specifications

Specifications:

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