Re: Planetarium app
David Attached is a list of the 1000 brightest stars. If you want more you can get lists by constellation from \ http://www.alcyone.de/brightest_stars.html On 22 May 2014, at 08:56, Astrovisuals 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 > --- > https://lists.uni-koeln.de/mailman/listinfo/sundial > --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Planetarium app
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" 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 --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Planetarium app
As mentioned on the list, there are several planetarium apps available already, for various OSs. But If you would like to write something custom, I am available as a programmer consultant. I wrote the first planetarium programme for Windows called 'MyStars!' which peaked in popularity around 2001. Writing an accurate planetarium programme requires numerous formulas, including those to do precession, nutation, and refraction calculations. If you want planets and moons as well, you also have to add formulas to calculate orbital positions then project these onto the celestial sphere. Most planetarium programs use the 'Bright Star Catalog'. Scientific data is generally free, as well as the formulas, if you know what you are looking for. David Patte P.S. I have also writen Sundial Simulators, by the way. On 2014-05-22 3:56, Astrovisuals 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 <http://www.astrovisuals.com.au> --- https://lists.uni-koeln.de/mailman/listinfo/sundial -- --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Planetarium app
Dear Fabio, I _think_ on reflection, that your Fullerene is also a 'truncated icosahedron'. ciao, Peter On 22/05/2014 7:09 PM, Fabio nonvedolora wrote: David, I’m looking for the same matter and I’ve found something to share with you. I replay here, may be others are interested, but without the files I describe (I’ll send them to you), if someone else is interested I’ll send the files to those who request them. My target is to make a fullerene, the 32 faces solid with 20 hexagons and 12 pentagons, with the stars and the constellation boundaries. I found the coordinates, RA & Dec, of the boundaries of the constellations. They are for the year 1879, when the boundaries were established, and the new values for 2000 due the precession of the equinoxes. I got these data from http://cds.u-strasbg.fr/ where you can find a lot of star catalogues. These files must be arranged to be used, so I transform them in a txt, to be read from my software. boundaries.txt contains the continuos sequence of the boundaries, separated from a comma. Every point has 6 data: RA 2000, Dec 2000, a progressive number, RA 1879, Dec 2000, the abbreviation of the constellations A friend send me a list of the 100 brightest stars with greek letter, constellation, RA, Dec and magnitude. I transform also this list in a txt with data separated by comma. I realize 100 stars are too few, although he says it is impossible to recognize more then 200 stars (about), so I think to look for a list of 300 - 400 stars. None of the files I found have the description of the links among stars of the same constellation, so I think I have to work to build it. This is not an urgent goal among my gnomonic interests so I’ve not finished it. If there is a file with these data I’m also interested. The image you see here is the fullerene as it is now, with the boundaries, no stars, and the ecpliptic. It is about 30 cm high, got from a paper sheet of 105 x 60 cm, to cut, fold and glue. With the same fullerene I made a phisical Earth globe, the Moon and Mars. constellations ciao Fabio Fabio Savian fabio.sav...@nonvedolora.it www.nonvedolora.eu Paderno Dugnano, Milano, Italy 45° 34' 10'' N, 9° 10' 9'' E, GMT+1 (DST +2) *From:* Astrovisuals <mailto:m...@astrovisuals.com.au> *Sent:* Thursday, May 22, 2014 9:56 AM *To:* sundial@uni-koeln.de <mailto:sundial@uni-koeln.de> *Subject:* Planetarium app 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 <http://www.astrovisuals.com.au> --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial -- -- Peter Mayer Discipline of Politics & International Studies (POLIS) School of History & Politics http://www.arts.adelaide.edu.au/historypolitics/ The University of Adelaide, AUSTRALIA 5005 Ph : +61 8 8313 5609 Fax : +61 8 8313 3443 e-mail: peter.ma...@adelaide.edu.au CRICOS Provider Number 00123M --- This email message is intended only for the addressee(s) and contains information that may be confidential and/or copyright. If you are not the intended recipient please notify the sender by reply email and immediately delete this email. Use, disclosure or reproduction of this email by anyone other than the intended recipient(s) is strictly prohibited. No representation is made that this email or any attachments are free of viruses. Virus scanning is recommended and is the responsibility of the recipient. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Planetarium app
Dear Fabio, What a fabulous image! Thank you so much for sharing it with us. ciao, Peter On 22/05/2014 7:09 PM, Fabio nonvedolora wrote: David, I’m looking for the same matter and I’ve found something to share with you. I replay here, may be others are interested, but without the files I describe (I’ll send them to you), if someone else is interested I’ll send the files to those who request them. My target is to make a fullerene, the 32 faces solid with 20 hexagons and 12 pentagons, with the stars and the constellation boundaries. I found the coordinates, RA & Dec, of the boundaries of the constellations. They are for the year 1879, when the boundaries were established, and the new values for 2000 due the precession of the equinoxes. I got these data from http://cds.u-strasbg.fr/ where you can find a lot of star catalogues. These files must be arranged to be used, so I transform them in a txt, to be read from my software. boundaries.txt contains the continuos sequence of the boundaries, separated from a comma. Every point has 6 data: RA 2000, Dec 2000, a progressive number, RA 1879, Dec 2000, the abbreviation of the constellations A friend send me a list of the 100 brightest stars with greek letter, constellation, RA, Dec and magnitude. I transform also this list in a txt with data separated by comma. I realize 100 stars are too few, although he says it is impossible to recognize more then 200 stars (about), so I think to look for a list of 300 - 400 stars. None of the files I found have the description of the links among stars of the same constellation, so I think I have to work to build it. This is not an urgent goal among my gnomonic interests so I’ve not finished it. If there is a file with these data I’m also interested. The image you see here is the fullerene as it is now, with the boundaries, no stars, and the ecpliptic. It is about 30 cm high, got from a paper sheet of 105 x 60 cm, to cut, fold and glue. With the same fullerene I made a phisical Earth globe, the Moon and Mars. constellations ciao Fabio Fabio Savian fabio.sav...@nonvedolora.it www.nonvedolora.eu Paderno Dugnano, Milano, Italy 45° 34' 10'' N, 9° 10' 9'' E, GMT+1 (DST +2) *From:* Astrovisuals <mailto:m...@astrovisuals.com.au> *Sent:* Thursday, May 22, 2014 9:56 AM *To:* sundial@uni-koeln.de <mailto:sundial@uni-koeln.de> *Subject:* Planetarium app 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 <http://www.astrovisuals.com.au> --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial -- -- Peter Mayer Discipline of Politics & International Studies (POLIS) School of History & Politics http://www.arts.adelaide.edu.au/historypolitics/ The University of Adelaide, AUSTRALIA 5005 Ph : +61 8 8313 5609 Fax : +61 8 8313 3443 e-mail: peter.ma...@adelaide.edu.au CRICOS Provider Number 00123M --- This email message is intended only for the addressee(s) and contains information that may be confidential and/or copyright. If you are not the intended recipient please notify the sender by reply email and immediately delete this email. Use, disclosure or reproduction of this email by anyone other than the intended recipient(s) is strictly prohibited. No representation is made that this email or any attachments are free of viruses. Virus scanning is recommended and is the responsibility of the recipient. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Planetarium app (Astrovisuals)
A list of star catalogs is available here - http://www.projectrho.com/public_html/starmaps/catalogues.php There are many planetarium apps available from the iTunes store. This one is well-regarded - https://itunes.apple.com/us/app/the-night-sky/id475772902 On May 22, 2014, at 5:39 AM, sundial-requ...@uni-koeln.de wrote: > Date: Thu, 22 May 2014 17:56:13 +1000 > From: "Astrovisuals" > To: > Subject: Planetarium app > Message-ID: > Content-Type: text/plain; charset="utf-8" > > 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 --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Planetarium app
David, I’m looking for the same matter and I’ve found something to share with you. I replay here, may be others are interested, but without the files I describe (I’ll send them to you), if someone else is interested I’ll send the files to those who request them. My target is to make a fullerene, the 32 faces solid with 20 hexagons and 12 pentagons, with the stars and the constellation boundaries. I found the coordinates, RA & Dec, of the boundaries of the constellations. They are for the year 1879, when the boundaries were established, and the new values for 2000 due the precession of the equinoxes. I got these data from http://cds.u-strasbg.fr/ where you can find a lot of star catalogues. These files must be arranged to be used, so I transform them in a txt, to be read from my software. boundaries.txt contains the continuos sequence of the boundaries, separated from a comma. Every point has 6 data: RA 2000, Dec 2000, a progressive number, RA 1879, Dec 2000, the abbreviation of the constellations A friend send me a list of the 100 brightest stars with greek letter, constellation, RA, Dec and magnitude. I transform also this list in a txt with data separated by comma. I realize 100 stars are too few, although he says it is impossible to recognize more then 200 stars (about), so I think to look for a list of 300 - 400 stars. None of the files I found have the description of the links among stars of the same constellation, so I think I have to work to build it. This is not an urgent goal among my gnomonic interests so I’ve not finished it. If there is a file with these data I’m also interested. The image you see here is the fullerene as it is now, with the boundaries, no stars, and the ecpliptic. It is about 30 cm high, got from a paper sheet of 105 x 60 cm, to cut, fold and glue. With the same fullerene I made a phisical Earth globe, the Moon and Mars. ciao Fabio Fabio Savian fabio.sav...@nonvedolora.it www.nonvedolora.eu Paderno Dugnano, Milano, Italy 45° 34' 10'' N, 9° 10' 9'' E, GMT+1 (DST +2) From: Astrovisuals Sent: Thursday, May 22, 2014 9:56 AM To: sundial@uni-koeln.de Subject: Planetarium app 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 --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Planetarium app
Hi David, here http://www.astrofilibresciani.it/Meridiane/Ombre_del_tempo/Shadows.htm you can find some info, in english, about the contest, ciao Fabio Fabio Savian fabio.sav...@nonvedolora.it www.nonvedolora.eu Paderno Dugnano, Milano, Italy 45° 34' 10'' N, 9° 10' 9'' E, GMT+1 (DST +2) From: Astrovisuals Sent: Thursday, May 22, 2014 9:56 AM To: sundial@uni-koeln.de Subject: Planetarium app 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 --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Planetarium app
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--- https://lists.uni-koeln.de/mailman/listinfo/sundial
