[QUOTE=Renato1;1086225]
Quote:
Originally Posted by Tropo-Bob
I still think it darn strange. Using those lower powers/bigger exit pupils is going to make it pretty tough to find many of those faint galaxies.
Are we perhaps talking "image" in relation to two different things? When looking at brightish DSOs like open clusters (especially before the telescope has cooled down) and one sees lots of big blobby stars, I can see why lower power delivers a nicer, more pleasing overall image. But when looking at very faint stars trying to just discern a tiny fuzziness from the background - well, that's a different situation. It never matters to me whether the telescope has cooled down or not. In most cases, 2mm exit pupil is the optimal way of easily discerning those faint fuzzy galaxies or pieces of nebulosity.
Regards,
Renato
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All true. And with an experienced observer, I would certainly cover those points. But with a beginner, they are looking for eps suitable for big bright objects. High power EPs with small exit pupils do take a little getting used to. And this was a query from a beginner with their first scope!
Cheers
Malcolm