Quote:
Originally Posted by barx1963
I think those simulators are more about the size of the moon, not the brightness!
Getting back to the original question. Having used an 8", 12" and 20" dob, I can tell you that the main difference in the abilities of a 12" versus an 8" is the ability to detect the fainter objects. You will see more of the fainter details in the 12" and the ability to use more power helps in doing things like detecting the E and F stars n the Trapezium in M42 or the lobes of Eta Carina.
That said there is big change in weight and convenience going to the bigger scope which must be weighed into the equation.
Cheers
Malcolm
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Thanks Malcolm; yes, I can see why a 12" Dob would pick up fainter objects. I assume that looking at Nebula etc would be quite superior than an 8"..(given conditions, EP's and all those variables)..am I correct in assuming that if I was looking at Jupiter (for eg) that I would see significant difference in details of cloud belts and GRS? This would seem to make sense to me given more light via aperture? As far as weight etc; this is not really an issue for me as I would have the scope on the same trolley I now use for my 8" and wheel it a few metres out the back garage door...so it would still get used alot...