I bought a Sunagor PATP 54038748 OP Telephoto lens adapter for my Canon Olympus telephoto lens with a 3 x converter. I don't know if they still make them. It is ...

thanks for the tip on tricking an EOS camera into using a teleconverter attached to a telescope! i had just tried this evening using my new 1.4 ...

Using auto teleconverters and auto extension tubes with manual lenses. A few years ago, my friend was working for a telescope company.

A NASA advisor quits after the agency keeps a $10 billion telescope named after James Webb, who was a senior State Department official during the persecution of ...

Canon EF lens mount connectors. Does anyone has a clue how the canon autofocus lenses are controlled by the camera? I need a fast and accurate focusing ...

Jul 5, 2007 · ViviCam 6300 lens stuck. I have a Vivitar ViviCam 6300. At some point, the telescoping lens got stuck, but the camera would still turn on ...

Search Developer. ASA Astrosysteme GmbH ( www.astrosysteme.at ) produce high end telescope systems for imaging. We had also software for using different ...

Half-hours with the Telescope (210 KB) How to Observe in Archaeology (201 KB) Indian Ghost Stories (244 KB) Said the Observer (68 KB) Six Lectures on Light ...

It depends on the length of your lens. Try shooting the moon at night with a 1000mm or 2000mm telescope. Then try stacking two teleconverters on the telescope.