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Yep, age, genetics, observing skills and sex (yep woman can see colour better than men, lucky ladies) can all play a big part in this. To me the blue planetary is definately very blue and M42 is definately greenish (most of the time and depending on what scope I'm looking through). Yet a friend of mine can only see the blue planetary as greenish and sees faint pink in M42. The bottom line is some eyes cant, some eyes can and much of that depends on conditions.
Last edited by [1ponders]; 30-01-2006 at 11:31 PM.
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