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Your cart is empty. With teleextenders it is possible to extend the effective focal length of a telescope system, resulting in higher magnification for the observation of the moon, the planets or small Deep-Sky objects with the same eyepieces. So you can use the advantages of eyepieces with longer focal length - such as the bigger eye distance and the more relaxed observing comfort - at high magnifications also.
These teleextenders incorporate a telecentric optical design that deliveres a excellent image sharpness over the whole field of view and are premium choices for visual observations and astrophotography. The combination of excellent fully multicoating with superior optical design makes the Focal Extenders superior to classic Barlow lenses.
Features:
- Suitable for visual observations and astrophotography
- Doubling the effective total focal length of the telescope
- Four lens telecentric design
- Fully multicoated
- Filter thread for color or nebula filters
Jim Waller
2025-07-16 12:01:27
I have a growing number of Explore Scientific Eyepieces. This just double the power on all of them. Great addition and exceptional value!
GuyF
2025-07-03 10:02:32
Seems to be of good quality, but I'm not happy with the image with my astronomical binoculars. The image is blurrier with these lenses. I returned the product which does not seem to be compatible with my equipment. The seller refunded my purchase promptly.
Rylex
2025-04-24 12:59:17
Eyepieces is a bit large, very impressive but no better than my old meade Tele negative at half the cost.
Mathias
2025-04-21 15:45:40
Günstiger Preis, bin zufrieden. Foto ist mit einem C8 gemacht.
Gregory Baynton
2025-04-17 15:23:31
Very nice build and optical quality, solid piece of kit very well protected packaging
tmaxstella
2025-01-16 16:00:25
Pro: Un oculare serio, come tutta questa linea ES. Luminoso, con un campo eccellente e si adatta molto bene a tutti gli schemi ottici. Niente effetto parallasse.Contro: nessuno
De L
2025-01-05 18:00:03
Bei dem Preis ist eine Randscharfe Abbildung nicht zu erwarten und genau so ist es.Da ich aber eh nur die Mitte nutze, ist das Teil für meine Ansprüche aussreichen.
Pascal P
2024-11-29 10:33:34
Bonne qualité, perte de luminosité très correcte
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