A quality barlow acts to change the focal ratio of your telescope and thus change the magnification of any given eyepiece. A handy and inexpensive way to increase magnification without buying a new eyepiece.
If you are doing astrophotography they are vital for increasing image scale.
Generally 2x, 3x or 5x
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- Barlows
Astrophotography 2″ extension tube
- $32.00
- Universal Extension tube to allow fitting of T Ring adaptors to telescopes with a 2" focuser.
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