Re: (IAAC) FWD: What should I buy? (rich field scopes)


Just a comment that off-axis imaging on planetary detail is limited
because the area where coma/astigmatism is under 1/4 wavefront is only
several arcminutes across at f/5 or so.

Clear skies, Mel Bartels // Programmer/Analyst, amateur astronomer
Springfield, Oregon,     // USA homepage: http://www.efn.org/~mbartels
mailto:mbartels@efn.org  // atm, atm-digest list-owner
Motorize A Dob: http://zebu.uoregon.edu/~mbartels/altaz/altaz.html