Hi David, There's a pretty nice iOS app out there already called "Sky Walk" (https://itunes.apple.com/us/app/sky-walk/id543606710?ls=1&mt=8) which shows the night sky and satellite paths from anywhere in the world, but as I understand it, only from your current geographical location. A good enhancement to the app would be to allow to enter a location anywhere on earth - I didn't look too hard, but I didn't see that option anywhere in the app. Thank you, Paul Ratto SunClocks North America 438-793-6161 sunclock...@icloud.com www.sunclocks.net
> On May 22, 2014, at 3:56 AM, "Astrovisuals" <m...@astrovisuals.com.au> wrote: > > I wonder if anyone can help? I want to produce a basic planetarium app for > iPad that shows the appearance of the Night Sky anywhere on earth. > I believe I need: > A program to convert RA and Dec to Alt-azimuth co-ordinates. > A list of stars, plus details about how to add “constellation lines” between > selected bright stars. > A way of incorporating the Milky Way as a vector file. > Would be grateful for any help; am happy to pay for programs, lists etc. > > And on a different subject, I would like to enter a sundial in the Italian > Astronomers’ International contest for sundial makers, but cannot find the > form to fill in. Can someone supply a PDF or web address? > Thanks, > David Widdowson, Astrovisuals Australia > www.astrovisuals.com.au
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