Quote:
Originally Posted by Lismore Bloke
Hey SAB, what are the optics like on that Skywatcher 120 refractor? They seem like a pretty good buy.
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Now that I've used it I can answer this question. For low magnification wide field, it's excellent. Nice crisp stars and bright views of starfields and nebulae thanks to the large aperture. I've used mags upto 75x with the image holding its clarity, but at 120x things are noticably fuzzier and less crisp due to chromatic abberation. I'd estimate around 100x is the maximum useful mag for this scope.
So in short, if you want something for low power Milky Way sweeps without burning a hole in your wallet, you can't go wrong with this.
I don't recommed it for planetary observing however as it can't support high powers and chromatic abberation does become a problem.
cheers