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Mr Spock

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    Controversy in highest usefull magnification

    in The Astro Lounge

    Posted

    2 minutes ago, johninderby said:

    I have noticed that the more experienced the observer the lower the magnification they seem to use.

    I'd like to think after 50 years observing I qualify for that!

    I have found that the best compromise between detail and contrast comes at x1 per mm. Anything above that is 'empty' magnification, so, larger image but no more detail. So, in my C9.25, x235 is ideal. It also fits in with UK observing conditions which rarely offer seeing good enough for higher powers regardless of scope size. Small and sharp is better than big and blurred :wink2:

    I do occasionally view the moon at x294, and double stars at x392, but they are exceptions.

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