"Mayer Duda" <Mayer@duda.com> wrote in message news:<6HGqd.19186$VL6.12462@clgrps13>...
> At what magnification should I be able to see the platerlets with
> an 80mm F 7.5 refractor?
80-100x should show some on a good night. I've gotten the brightest
central one at 80x in my TV Ranger. By "gotten" I mean seeing it as a
bright dot. I've "gotten" 5 in my TV85, but 3 is more the norm.
I've not been able to resolve the double craterlet in my 6" scope,
though some have reported doing so.
Re: Tal 2m or Explorer 150/200? ... The scope seems to bear some ... The eyepiece screws,should make no difference to the focussing. ... > observing but the chaps at Telescope House stillreckoned it would ... > tempting to push the magnification beyond the 10mm Plossl and 2x Barlow ... (uk.sci.astronomy)
Re: Help w/ a Galileo 1000mmx120mm, mars observation ... >You are indeed correct that 400x is too much magnification.... This means the scope would ... The best viewing is when it is nearly overhead. ... >When conditions are bad for viewing the planets, that is the time to go ... (sci.astro.amateur)
Re: true magnification of Televue 3x? ... do have the JMI installed between the scope and the Televue, ... image scale was smaller than with the 3x barlow.... Powermate 5x (and thereby get less overall magnification once the filter ... these are effectively complete 'scope' assemblies used to ... (sci.astro.amateur)
Re: Viewing by eye versus astrophotography ... achieve a high effective exposure time,... Is that where the scope tracks on both axis, in case you haven't pointed the scope correctly at the Pole? ...magnification is presumably determined by the focal length of the ... For high resolution, with the sort ... (sci.astro.amateur)
Re: refractor 120mm : f/5 or f/10 ? ... because I couldn't get enough magnification for planets and the moon, with eyepieces or a web camera. ... This new scope will be mainly used for visual ovservations, and casually. ... I wonder if in purchasing a f/5 I will not regret the f/10 with its greater magnification on planets and if I buy the longer one, if it will not be too dark visually. ... (sci.astro.amateur)
