Quote:
Originally Posted by inertia8
My only experience with Barlows is the 2.5x GSO/Bintel that was provided with the loan scope. This seemed to make the view through the eyepiece much darker and only useful when looking at bright subjects.
I wanted to try something else and this little fella gets a good rap, worse case if I end up not liking barlows he can go back up on the classifieds.
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Higher power does make things darker, the light from the object you are viewing is spread over a larger area, so it dims it. But higher power also darkens the sky background so makes some dim objects start to stand out from the background. The end result is that for various objects there is an ideal magnification in many cases.
Malcolm