Originally posted by germar ...how do these very long SLR lens combinations compare to buying a nicer hobby telescope with a camera mount and shooting with that?
And the follow on, can a hobby telescope be used to shoot comparable long shots of static subjects on earth?
I have an Orion 127 Mak telescope that I use with my K-x. Here's a pic...
Long lenses work well, but when it comes to astrophotography, the bigger the aperture, the better. Even if a person puts teleconverters on a lens to increase the focal length, they can't make the lens larger. And a big aperture means more detail. The scope above has a 5" mirror (a mid-small size, when it comes to astronomy.) When the sky is calm and the seeing is exceptional, I can see mountain ranges on the moon, and the cloud bands of Jupiter.
For terrestrial use, telescopes don’t fare so well. Telescopes generally aren’t concerned with the orientation of the image. Most telescopes will invert or flip the image that you see. And if you’re shooting wildlife, then a real lens providing autofocus is an advantage. That said, using spotting scopes with a camera is popular for wildlife. Here’s my compact camera on my spotting scope…