8 inch telescope (200mm) – 7.5 magnitude. 4 inch telescope (102mm) – 6 magnitude. Typical values are 5.0 for a backyard site, 6.0 for a rural site, 7.0 for an excellent site. Magnitude you can see with a telescope = Dimmest star seen by naked eye + Your telescope magnitude How dark is my night sky? They can resolve double stars at .76 arcseconds and can be magnified up to 304 times the human eye. Celestron NexStar 6SE telescope: Full review The fuss-free Celestron NexStar 6SE is a high-quality telescope that offers clear and crisp views of … 10 inch telescope (250mm) – 8 magnitude. 6-inch Telescopes offer exceptional resolution for their size. Whether you can actually see to 15.5 shouldn't really matter here. Under typical conditions the following conversion table applies: SQM = 22.0 => NELM = 7.0 6 inch telescope (150mm) – 7 magnitude. This is the magnitude of the dimmest star you can see near the zenith. ; Perhaps the best beginner Dobsonian reflector telescope you can buy - big 6" aperture at an amazing price A beginner may use a 60mm telescope for a few months or years before deciding they need to upgrade to a better telescope - a 6" Dobsonian will give you a lifetime of wonderful views 5 inch telescope (127mm) – 6.5 magnitude. Make sure this fits by entering your model number. SQM reading Alternatively, you can measure the sky brightness with a SQM meter. 6" Optical tubes also make exceptional light gatherers by allowing an observer to see 14.7 magnitude stars!

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