Quote:
Originally Posted by silv
 oh, sooo angry! grrrrrrr!
in order to find a focal point for the lens-less camera in the telescope I would have to be able to find any focal point anywhere, right?
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No Silv, you don't get an image without a lens - the lens takes the jumbled light from a scene and makes an image of that scene on the sensor chip of the camera. Without a lens all you get is the jumbled up light. At prime focus, the scope is the "lens" and it forms the image on the camera sensor - you don't need any other lens. The camera plays no part in focusing anymore, since it does not control the scope - you focus by hand with the scope focuser.
to set the camera lens to infinity when doing the demo suggested in earlier post, use "manual" focus mode, not AF, and physically move the focus ring on the lens to the infinity mark.
When using the camera with the scope, you should only need to set ISO and exposure time in "manual" exposure mode (eg ISO200 and shutter around 1/500 will probably give you something recognisable in daylight). Aperture is determined by the f5 scope, so you can ignore that - focus should be set to "manual" and also ignored.