[alocky (Andrew lockwood)]

Hi all, I'm about to take the plunge and buy a ccd for solar, lunar and planetary imaging. I'm looking for the best compromise to use on an 80mm Lunt for the sun, a 4"f15 for the moon, and a 25"f5 for planets. The Imaging Source 1/2" chip (DBK41) version seems to be about right for all three applications, and with the right juggling of barlows gives me about a half arc second per pixel on the big scope to 0.7 on the solar scope.

Question is, the bigger chip has a lower frame rate than the smaller chip - how much difference is that likely to make in practice?

thanks in advance,
Andrew.