Quote:
Originally Posted by strongmanmike
Cheers guys
Hmmm?..so is a 1.2m aperture F2.5 with a 400mm diameter corrected and illumated image circle, the ultimate imaging scope..? 
It's nice to see that modern technology has narrowed the gap considerably for the small fry though 
Mike |
It was designed for film, ie hypered tech pan from memory. Can you imagine what a colour/NB filter 400mm in diameter would cost? I would like to see it perform with a 400mm contiguous sized modern sensor as sensitive as Mikes. The needed exposures would be measured in a few seconds.
What also needs to be said is that the exquisite optical accuracy of Mikes 150mm optic with associated filters is barely matched by his sensor.
The old rule is still true. Nothing beats aperture!
There is also no point having more aperture and FoV than your sensor can collect!
How many of your sensors would it take to cover a 400mm plate Mike?
I think you will find it is about the same as the ratio of your optics aperture (in area) to the 1.2M UK Schmidt .
Bert