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Model: es_1.25inch_2x_barlowPart Number: 0218750
With tele-extenders 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 tele-extenders incorporate a tele-centric optical design that delivers a excellent image sharpness over the whole field of view and are premium choices for visual observations and astrophotography. The combination of excellent fully multi-coating with superior optical design makes the Focal Extenders superior to classic Barlow lenses.
A top quality tele extender from Explore Scientific in the 1.25” size. Really well made and is a substantial piece of equipment. The images are nice and clear without any aberrations. The extender is better for stopping vignetting over the Barlow lens. Definitely a good buy. Top service from FLO again
I used this x2 focal extender with my C9.25 last night to image Mars at close approach. What a difference to the basic x2 Barlow that I was using. No significant light loss, or colour dispersion or reflections which I was having previously. Last nights data is the best I've had. I also tried imaging the craters on the moon as a test, and couldn't believe the improvement. Overall I'm very happy with this focal extender.
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