infinity focus only lens for astro photography

[TominNJ]

my optics knowledge is almost zero but it seems to me that there would be a market for a wide fast lens that focuses only at infinity and Is corrected for coma. It would need a small focus adjustment to correct for temperature. The limited focus movement should make the lens cheaper to manufacture.

i think a 3rd party company that made it for various mounts could sell enough to make a profit. Someone should get right on this and have it ready for the next new moon.

 

[Joules]

But especially for wide angle astro you usually want some piece of landscape in the frame, and often in the foreground. So there is a disadvantage in loosing focus ability.