Quote:
Originally Posted by Peter Ward
Nice.
I'm of the understanding that the limiting stellar values are aperture driven (with the 12" having about 3.5x more flux gathering than the 6" AP)...and not to take anything away from the AG12.... but that's why the AP152 had to work so hard.
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Yep taking into account the central obstruction you are correct plus the singnal to noise ratio is improved by focal ratio too so F3.8 helps a lot with the extended faint features compared to the F8.3 of the Starfire.
Mike