Yes it was a crop, here is a full frame pic. The Tal only has a 27mm aperture in the supplied T-mount. The focuser is primitive (only 1 1/4") and almost impossible to get good focus. The guide scope only has 340mm focal length. I have made a focal reducer for the Tal. I don’t usually use it for imaging because of the focuser.
<FONT color=black><FONT size=2>I just wanted to get an idea how the camera would perform at 2000mm @ F10. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com[img] /><o:p></o:p></FONT></FONT></P><P style=[/img]
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The dust mote appeared soon after starting imaging as the sensor is exposed to the atmosphere (no filter) when on the Tal. I will clean it this morning.<o:p>
When the Moon is out it is time to test. </o:p>
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Under a dark sky and a decent Newtonian or SCT or RC the results with this camera should be quite good.</o:p>
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Bert</o:p>
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