Absolutely. Then again, there are limits. I remember an old Meade model (no longer available) that was a 20", $36k monster. I was beautiful, and they sold it as an observatory-grade instrument. But the 16" models were priced close to $10k, so it sort of made sense (in that particular case) to duplicate the rig. My "napkin analysis" was:
20" diameter, ~315 squared inches of area[0], $36k
2x 16 inches diameter, ~402 squared inches of area, $20k
This prices did include mounts, but back then (more than 10 years ago) I wasn't very knowledgeable and I honestly don't know if they were good mounts. So there was margin to increase the light gathering and having spare money for the new camera.
Still, the most interesting use for multiple telescopes would be building and interferometer. I'll keep looking into that, with the procesing power available in todays machines it should be doable.
[0] I know the secondary mirror obstructs the light gathering, but I don't have precise figures, so let's go with it the area of the main mirror.
20" diameter, ~315 squared inches of area[0], $36k
2x 16 inches diameter, ~402 squared inches of area, $20k
This prices did include mounts, but back then (more than 10 years ago) I wasn't very knowledgeable and I honestly don't know if they were good mounts. So there was margin to increase the light gathering and having spare money for the new camera.
Still, the most interesting use for multiple telescopes would be building and interferometer. I'll keep looking into that, with the procesing power available in todays machines it should be doable.
[0] I know the secondary mirror obstructs the light gathering, but I don't have precise figures, so let's go with it the area of the main mirror.