Quote:
Originally Posted by AstroOz
I came for this comment. Am new to IIS, and had been recommended 7x50’s for visual astronomy. Thanks for the confirmation.
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I'd point out that for decades, most older books recommended the 7X50s as the best for beginners at astronomy. But the more recent books recommend 10X50s more often.
7X50s are great if one has a dark sky, and are especially good when looking at Milky Way star clouds in that dark sky. Their 7mm exit pupil gives one the brightest image one can get, and they have a wide field of view.
But 10X50s give nicer images in the more typical light polluted skies of nowadays, and will always show more faint deep sky objects in either type of sky than 7X50s. Their main disadvantage relative to 7X50s is that shaking will be more noticeable and that they'll have a narrower field of view.
Regards,
Renato