The Takahashi 7x50mm Finderscope is a doublet refractor [Image Credit: Takahashi] . Specifications Aperture :  2.0 in. [50 mm] Focal...

The TeleVue Ethos eyepiece line has redefined the ultra-widefield observing experience [Image Credit: TeleVue] . Introduction It took some time for me to realize that a seismic shift was about to take place in amateur astronomy when TeleVue announced a new eyepiece design at the 2007 Northeast Astronomy Forum. I had been using the Nagler Type 4 and Type 5 series for almost a decade; and like many owners of this venerable eyepiece line, couldn't really see how TeleVue could ma

The TeleVue Nagler eyepiece line is an industry standard in the field of astronomy [Image Credit: TeleVue] . Introduction I was working part-time at a bank when I purchased my first serious telescope and mount in 1997 - a Takahashi FS-78 and a Vixen Great Polaris. Back then, I could only afford more economical eyepiece designs that were available from Orion and TeleVue [first Plossls, then Wide-Fields]. While providing satisfying contrast and clarity, I realized there were si