Quote:
Originally Posted by swannies1983
"maximum" useful magnification of ~400X.
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looking with eyeball is different to capturing lotsa bmps (ie a movie) and then trying to process the "seeing" conditions out.
400x is probably max for any eyepiece and telescope although on those rare occassions, you may push past this.
For my toucam acting as a 6mm eyepice in my 1250 focal length newt, 1250 / 6 = 208 x 7.7 (5x powrmate with 100mm extension) = 1600x.
another way to measure is 1250 x 7.7 = 9625mm. You will here most planetary imagers talk about focal length needing to be up around 10,000mm. Different cameras will change the physical size of the image depending on the size of the pixel area, so magnification is not really used as a term.
I would be keeping 1/25, setting the brightness to 50 - 60%, then upping the gain until you start to burn out the image, ie the white bands all become white. once you have focussed and about to image, then up the gain a little 10%, 20% etc.
The longer the focal length ie barlows and extension tube, the less light comes in and you have to up the gain or brightness.
I am at the limit of a toucam at 1600x with a 10" mirror etc. Mike here has a 12" mirror, hence more light and can push the mag further
I basically have to back the magnification off or have perfect transparency to do Saturn due to the relative dimness.
(Hey Mike, please feel free to split this thread if needed)