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Showing results for tags 'variable stars'.
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I would like to start photometry of variable stars and eventually would like to be able to contribute to the AAVSO . I am going to buy a CCD camera and need to match it to one of my two scopes. I understand that for photometry the FWHM of a star should cover 2-3 pixels. I’m not sure which scope is best for photometry. I have a Celestron 8 Edge HD and a Skywatcher 80 Equinox Pro. Which scope is likely to give a big enough field of view to pick up comparison stars yet also capture enough light to give scientifically useful data?
The first Binocular Sky Newsletter of 2019 is ready. In addition to the usual stuff on DSOs and variable and double stars, this month we have: Uranus still available Comet 46P/Wirtanen fading X Oph brightening Two (difficult) grazing occultations Here's hoping that 2019 brings us all an abundance of clear, dark skies. To pick up your free copy, just head over to http://binocularsky.com and click on the Newsletter tab. You can also subscribe (also free) and have it emailed each month.
The Binocular Sky Newsletter for November 2013 is now available. In addition to the usual selection of good DSOs and Solar System objects to observe, in this month's issue we also have: * Three comets * Two asteroid occulations for the UK * Many lunar occultations (including one of Spica) * A selection of variable stars To grab your (free!) copy, go to http://binocularsky.com/ and click on the Newsletter tab. I hope you find it useful.
The latest edition of the Binocular Sky Newsletter is ready. As well as the usual overview of DSOs, variable and double stars, this month we have: * Uranus and Neptune are back (just!) * A couple of Mira variables near maximum * Ceres is still available * Review of the Bino Bandit I hope it helps you to get the best out of these short summer nights with your binoculars or small telescopes. To pick up your free copy, just head over to http://binocularsky.com and click on the Newsletter tab. You can also subscribe (also free) and have it emailed each month.