![background image](http://html1.mh-extra.com/html/orion/shorty-08711d/shorty-08711d_instruction-manual_1652608001.webp)
INSTRUCTION MANUAL
ORION
®
BARLOW LENSES
IN 017 Rev D 03/09
Corporate Offices:
89 Hangar Way, Watsonville CA 95076 - USA
Toll Free USA & Canada:
(800) 447-1001
International:
+1(831) 763-7000
Customer Support:
Copyright © 2020 Orion Telescopes & Binoculars. All Rights Reserved. No part of this product instruction or any of its contents
may be reproduced, copied, modified or adapted, without the prior written consent of Orion Telescopes & Binoculars.
A N E M P L O Y E E - O W N E D C O M P A N Y
Español
Francais
Deutsche
➊
Pour obtenir le manuel d'utilisation
complet, veuillez vous rendre sur le site Web
OrionTelescopes.eu/fr et saisir la référence
du produit dans la barre de recherche.
➋
Cliquez ensuite sur le lien du manuel
d’utilisation du produit sur la page de de-
scription du produit.
➊
Wenn Sie das vollständige Handbuch
einsehen möchten, wechseln Sie zu
OrionTelescopes.de, und geben Sie in der
Suchleiste die Artikelnummer der
Orion-Kamera ein.
➋
Klicken Sie anschließend auf der Seite mit
den Produktdetails auf den Link des entspre-
chenden Produkthandbuches.
➊
Para ver el manual completo, visite Orion-
Telescopes.eu y escriba el número de artí-
culo del producto en la barra de búsqueda.
➋
A continuación, haga clic en el enlace al
manual del producto de la página de detalle
del producto.
An Orion barlow lens is a simple concave (negative) lens that amplifies the magnifying power of
any telescope eyepiece it’s used with. It works by reducing the convergence of the light cone
heading into the eyepiece. In this way it increases the focal length of the telescope. Since mag-
nification is determined by dividing the telescope’s focal length by the eyepiece’s focal length,
you can see that by doubling the telescope’s focal length, a 2x barlow lens doubles the magni-
fication of the system for a given eyepiece.
In this way, a 2x barlow can effectively double the number of magnifications available to you from
a set of eyepieces. For example, if you have eyepieces with focal lengths of 26mm, 18mm, and
10mm, using a 2x barlow will give you the equivalent of 13mm, 9mm, and 5mm eyepieces—like
getting three more eyepieces for the price of one barlow!