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Hi Matt,
Thankyou for your reply, I have installed a 2" focuser to the Tal200k and was checking if my collimation was right that night. Next I need to find the correct focal point so I can attach the Pentax KX slr into the focuser and not freehand shots. Visually the image was sharper but just could not find correct place on eyepiece. This Tal version has a shorter focal length F 8.5 and fairly small central obstruction (about 35%) compared to the Chinese RC's. She may be ok for general astro pictures.
Den
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