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MN56 vs. MN55 vs. MN58 models Mak-Nwt.

Started by paulsky, 09/20/2007 04:09PM
Posted 09/20/2007 04:09PM Opening Post
Hello,
I am intrigated with this telescopes, there is three models with 5" aperture: MN55 F/5.5-MN56 F/6-MN58 F/8.
There is very much difference between this models? Same aperture, but focal lenght....5.5,6 and 8! I have reading that the F/5.5 is optimized for photography, the F/6 is more generalist telescope, and the F/8 is optimized for pure visual use...this is correct?

Thanks,
Paulo