Quote:
Originally Posted by alpal
Hi Mike,
yes - with Paul's RCOS 16" at FL = 3,414 mm and
ZWO2600MM Pro pixel size of 3.76 microns
his arc-sec per pixel ratio is: 0.23 arc seconds.
https://www.wilmslowastro.com/softwa...m#ARCSEC_PIXEL
oo
With your telescope -
Just using the ideas of the Nyquist sampling theorem if you
ever got sub 1 arc second seeing you would need a minimum of
0.5 arc seconds per pixel to properly measure it.
So any measurement below 2 x 0.84"/pixel or 1.68 arc seconds seeing
is probably not accurate?
Paul's telescope could take full advantage of the seeing at your wonderful location.
Can anyone please correct me if I'm wrong?
cheers
Allan |
On the subject of sampling and seeing....one funny comparison is with my last effort on the
same galaxy back in 2015, from my last observing site at Wallaroo close to Canberra, with all the same imaging gear and processing software...bloody no comparison
looks like crap, I knew it wasn't my best work at the time and it's much less exposure, I remember it was a one night quicky... I now realise just how crap it was
Mike