Quote:
Originally Posted by Kirkus
Which would be more important when selecting a guide scope, aperture or focal length. I'm assuming aperture, but what I know so far wouldn't fill a thimble.  |
I think it depends a bit on what camera you're using for guiding. If you have a sensitive camera then your aperture is less important. I place more emphasis on focal length than I think many other people do. I use a 70x700 skywatcher which works well when imaging through my 80x480 megrez, and I use the 80x480 megrez for guiding when doing widefield photography. I don't have any problem with the F/10 of the 70x700 skywatcher - stars are easy enough to find with my Q-Guider. It was hard with a un-modified webcam, and a modified toUcam was inbetween those two in ease of use.
I think it largely comes down to what your scope/mount can handle without becoming unsteady, and how sensitive the camera is that you're guiding with.
Roger.