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Originally Posted by drmorbius
Now assuming what I've said is roughly true... one last question... If I were imaging and therefore the photon collection capability of the scope was not a major factor... would the image typically be better from a refractor? Is it a case of optics quality? In other words, if I wanted the same image quality from a reflector I would end up spending the same amount of money to get similar quality optics (mirrors)?
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A smaller refractor will work BUT there is a formula for the resolution of a scope and its based on the aperture, the larger the aperture the finer resolution possible. This extends to better resolution in your final image from a larger aperture, whether its from a refractor or reflector, and this means a better image. Size matters!!
Another important factor is that a larger aperture will be gathering more light in a given time so your exposures will be shorter for a larger aperture. This will give you a better chance of grabbing more images in times of good seeing in a larger scope than a smaller scope allowing for a better image and to actually get to use the better resolution of the scope. Again, size matters
After saying that whatever scope you use most is the best.
Cheers