![Telescopes / Vixen / Crayford focuser / Telescopic sight / Camera lens / Refracting telescope / Digital single-lens reflex camera / Focal length / Astrophotography / Optics / Observational astronomy / Physics Telescopes / Vixen / Crayford focuser / Telescopic sight / Camera lens / Refracting telescope / Digital single-lens reflex camera / Focal length / Astrophotography / Optics / Observational astronomy / Physics](https://www.pdfsearch.io/img/24256d34197be3db12b94d33a8a49750.jpg) Date: 2010-03-31 23:34:41Telescopes Vixen Crayford focuser Telescopic sight Camera lens Refracting telescope Digital single-lens reflex camera Focal length Astrophotography Optics Observational astronomy Physics | | Explore Scientific 127 ED Craig Stark Last summer while on my second trip to the Julian Starfest here in southern California, I got a chance to spend some time with Scott Roberts of Explore Scientific as we were both staAdd to Reading ListSource URL: explorescientific.comDownload Document from Source Website File Size: 856,11 KBShare Document on Facebook
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