Re: sunrise/set/twilight calculators ?
Thibaud Taudin Chabot tcha...@dds.nl wrote: for my coordinates 52.30N 4.85E sumwait gives the times using the Western European time. However on the continent for this longitude the Central European time is used. It just uses your computer's timezone setting - it doesn't have a geographical database of timezones. Speaking of time zones and hours of daylight, I have a modified version of sunwait that prints sunrise time tables, following the scheme I outlined in RISKS a few years ago. http://catless.ncl.ac.uk/Risks/25.10.html#subj1 Tony. -- f.anthony.n.finch d...@dotat.at http://dotat.at/ Forties, Cromarty: East, veering southeast, 4 or 5, occasionally 6 at first. Rough, becoming slight or moderate. Showers, rain at first. Moderate or good, occasionally poor at first. --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: sunrise/set/twilight calculators ?
My pc has UTC+1 + daylightsaving time. UTC+1 is Central European time At 10:32 5-9-2013, Tony Finch wrote: Thibaud Taudin Chabot tcha...@dds.nl wrote: for my coordinates 52.30N 4.85E sumwait gives the times using the Western European time. However on the continent for this longitude the Central European time is used. It just uses your computer's timezone setting - it doesn't have a geographical database of timezones. Speaking of time zones and hours of daylight, I have a modified version of sunwait that prints sunrise time tables, following the scheme I outlined in RISKS a few years ago. http://catless.ncl.ac.uk/Risks/25.10.html#subj1 Tony. -- f.anthony.n.finch d...@dotat.at http://dotat.at/ Forties, Cromarty: East, veering southeast, 4 or 5, occasionally 6 at first. Rough, becoming slight or moderate. Showers, rain at first. Moderate or good, occasionally poor at first. --- https://lists.uni-koeln.de/mailman/listinfo/sundial
sunrise/set/twilight calculators ?
Hi, I'm looking for an (open source) unix/linux command line tool that calculates sunrise/sunset and civil/nautical/astronomical twilights for a particular location and date. This will be used in a unix shell script so needs to be something I can install on the machine in question. Could be binary or source. I suppose it could be a remote web service, but would have to be easily callable from the command line, not something a human has to type in. On the other hand, if the same functionality is available from library routines that would be great, but they should be C-callable and not require buying into a heavyweight programming paradigm. Just enter lat/long and date/time (maybe timezone/altitude) and get the resulting number(s). Not too much more than this. Resulting accuracy to 5-10 minutes would be ok. Any ideas? Thanks! Rob --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: sunrise/set/twilight calculators ?
Hi Rob: Found the attached file in the archives on my computer. Can't vouch for accuracy. There is also the PyEphem Python suite, which can probably compute the required quantities from a command line call. I'll check, if you like. -- Richard SOFTWARE.SUNRISE.SUNSET.TWO Description: Binary data On Wednesday, September 4, 2013,247, at 10:11 AM, Rob Seaman wrote: Hi, I'm looking for an (open source) unix/linux command line tool that calculates sunrise/sunset and civil/nautical/astronomical twilights for a particular location and date. This will be used in a unix shell script so needs to be something I can install on the machine in question. Could be binary or source. I suppose it could be a remote web service, but would have to be easily callable from the command line, not something a human has to type in. On the other hand, if the same functionality is available from library routines that would be great, but they should be C-callable and not require buying into a heavyweight programming paradigm. Just enter lat/long and date/time (maybe timezone/altitude) and get the resulting number(s). Not too much more than this. Resulting accuracy to 5-10 minutes would be ok. Any ideas? Thanks! Rob --- https://lists.uni-koeln.de/mailman/listinfo/sundial - | Richard B. LangleyE-mail: l...@unb.ca | | Geodetic Research Laboratory Web: http://www.unb.ca/GGE/ | | Dept. of Geodesy and Geomatics EngineeringPhone:+1 506 453-5142 | | University of New Brunswick Fax: +1 506 453-4943 | | Fredericton, N.B., Canada E3B 5A3| |Fredericton? Where's that? See: http://www.fredericton.ca/ | - --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: sunrise/set/twilight calculators ?
It seems that PyEphem can also do the job: http://rhodesmill.org/pyephem/rise-set.html#naval-observatory-risings-and-settings -- Richard On Wednesday, September 4, 2013,247, at 10:11 AM, Rob Seaman wrote: Hi, I'm looking for an (open source) unix/linux command line tool that calculates sunrise/sunset and civil/nautical/astronomical twilights for a particular location and date. This will be used in a unix shell script so needs to be something I can install on the machine in question. Could be binary or source. I suppose it could be a remote web service, but would have to be easily callable from the command line, not something a human has to type in. On the other hand, if the same functionality is available from library routines that would be great, but they should be C-callable and not require buying into a heavyweight programming paradigm. Just enter lat/long and date/time (maybe timezone/altitude) and get the resulting number(s). Not too much more than this. Resulting accuracy to 5-10 minutes would be ok. Any ideas? Thanks! Rob --- https://lists.uni-koeln.de/mailman/listinfo/sundial - | Richard B. LangleyE-mail: l...@unb.ca | | Geodetic Research Laboratory Web: http://www.unb.ca/GGE/ | | Dept. of Geodesy and Geomatics EngineeringPhone:+1 506 453-5142 | | University of New Brunswick Fax: +1 506 453-4943 | | Fredericton, N.B., Canada E3B 5A3| |Fredericton? Where's that? See: http://www.fredericton.ca/ | - --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: sunrise/set/twilight calculators ?
Rob Seaman sea...@noao.edu wrote: I'm looking for an (open source) unix/linux command line tool that calculates sunrise/sunset and civil/nautical/astronomical twilights for a particular location and date. http://risacher.org/sunwait/ Tony. -- f.anthony.n.finch d...@dotat.at http://dotat.at/ Forties, Cromarty: East, veering southeast, 4 or 5, occasionally 6 at first. Rough, becoming slight or moderate. Showers, rain at first. Moderate or good, occasionally poor at first. --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: sunrise/set/twilight calculators ?
On Sep 4, 2013, at 6:44 AM, Richard B. Langley l...@unb.ca wrote: http://rhodesmill.org/pyephem/rise-set.html#naval-observatory-risings-and-settings On Sep 4, 2013, at 6:45 AM, Tony Finch d...@dotat.at wrote: http://risacher.org/sunwait/ These both look like good candidates. I'll read the documentation and throw a dart at the dartboard. The wait part of sunwait is an interesting feature, though easy enough to implement with a wrapper script once you have the expected time of whatever event. I implemented a similar feature for heliocentric triggers for an asteroseismology project. Would have done barycentric, but the difference was negligible during the couple of months of observations. Thanks! Rob --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: sunrise/set/twilight calculators ?
Result from USNO website with coordinates entered to nearest minute (all that's allowable) Wednesday 4 September 2013 Universal Time - 4h SUN Begin civil twilight 06:28 Sunrise 06:53 Sun transit 12:40 Sunset18:27 End civil twilight18:51 -- Richard On Wednesday, September 4, 2013,247, at 12:49 PM, Rob Seaman wrote: And the winners are: Pyephem turns out to be layered on Elwood Downey's Xephem - can't go wrong there! However, rather than the usual python package management minuet, sunwait is an old-school software tool - just compile and run giving all the numbers I asked for with one command: % ./sunwait -p 30.1697S 70.8065W Using location: 30.169700S, 70.806500W Date:4 Sep 2013 Local time: 11:31 Day length: 11:39 hours With civil twilight 12:25 hours With nautical twilight 13:20 hours With astronomical twilight 14:16 hours Length of twilight: civil 0:22 hours nautical 0:50 hours astronomical 1:18 hours Current specified time zone: CLT (-4 from UTC) Sun transits meridian 1241 CLT Sun rises 0653 CLT, sets 1830 CLT Civil twilight starts 0629 CLT, ends 1854 CLT Nautical twilight starts 0601 CLT, ends 1922 CLT Astronomical twilight starts 0533 CLT, ends 1949 CLT Interested in the nights not the days so will have to run it for the preceding date, too. Will add moonrise/set/phase some other time :-) Thanks! Rob -- On Sep 4, 2013, at 6:44 AM, Richard B. Langley l...@unb.ca wrote: http://rhodesmill.org/pyephem/rise-set.html#naval-observatory-risings-and-settings On Sep 4, 2013, at 6:45 AM, Tony Finch d...@dotat.at wrote: http://risacher.org/sunwait/ --- https://lists.uni-koeln.de/mailman/listinfo/sundial - | Richard B. LangleyE-mail: l...@unb.ca | | Geodetic Research Laboratory Web: http://www.unb.ca/GGE/ | | Dept. of Geodesy and Geomatics EngineeringPhone:+1 506 453-5142 | | University of New Brunswick Fax: +1 506 453-4943 | | Fredericton, N.B., Canada E3B 5A3| |Fredericton? Where's that? See: http://www.fredericton.ca/ | - --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: sunrise/set/twilight calculators ?
And the winners are: Pyephem turns out to be layered on Elwood Downey's Xephem - can't go wrong there! However, rather than the usual python package management minuet, sunwait is an old-school software tool - just compile and run giving all the numbers I asked for with one command: % ./sunwait -p 30.1697S 70.8065W Using location: 30.169700S, 70.806500W Date:4 Sep 2013 Local time: 11:31 Day length: 11:39 hours With civil twilight 12:25 hours With nautical twilight 13:20 hours With astronomical twilight 14:16 hours Length of twilight: civil 0:22 hours nautical 0:50 hours astronomical 1:18 hours Current specified time zone: CLT (-4 from UTC) Sun transits meridian 1241 CLT Sun rises 0653 CLT, sets 1830 CLT Civil twilight starts 0629 CLT, ends 1854 CLT Nautical twilight starts 0601 CLT, ends 1922 CLT Astronomical twilight starts 0533 CLT, ends 1949 CLT Interested in the nights not the days so will have to run it for the preceding date, too. Will add moonrise/set/phase some other time :-) Thanks! Rob -- On Sep 4, 2013, at 6:44 AM, Richard B. Langley l...@unb.ca wrote: http://rhodesmill.org/pyephem/rise-set.html#naval-observatory-risings-and-settings On Sep 4, 2013, at 6:45 AM, Tony Finch d...@dotat.at wrote: http://risacher.org/sunwait/ --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: sunrise/set/twilight calculators ? TZM
A good chance for me to plug my Free Windows App (Time Zone Master) from relativedata.com, which gives Sunrise6:54 CLT Transit12:42:06 CLT Sunset 18:29 CLT Moonrise5:05 CLT Transit11:59:33 CLT Moonset 17:57 CLT Also has local mean and apparent time, phase times and season times for multiple desktop clocks at once, with timezone corrections back to the beginning of standard time --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: sunrise/set/twilight calculators ?
for my coordinates 52.30N 4.85E sumwait gives the times using the Western European time. However on the continent for this longitude the Central European time is used. At 17:49 4-9-2013, Rob Seaman wrote: And the winners are: Pyephem turns out to be layered on Elwood Downey's Xephem - can't go wrong there! However, rather than the usual python package management minuet, sunwait is an old-school software tool - just compile and run giving all the numbers I asked for with one command: % ./sunwait -p 30.1697S 70.8065W Using location: 30.169700S, 70.806500W Date:4 Sep 2013 Local time: 11:31 Day length: 11:39 hours With civil twilight 12:25 hours With nautical twilight 13:20 hours With astronomical twilight 14:16 hours Length of twilight: civil 0:22 hours nautical 0:50 hours astronomical 1:18 hours Current specified time zone: CLT (-4 from UTC) Sun transits meridian 1241 CLT Sun rises 0653 CLT, sets 1830 CLT Civil twilight starts 0629 CLT, ends 1854 CLT Nautical twilight starts 0601 CLT, ends 1922 CLT Astronomical twilight starts 0533 CLT, ends 1949 CLT Interested in the nights not the days so will have to run it for the preceding date, too. Will add moonrise/set/phase some other time :-) Thanks! Rob -- On Sep 4, 2013, at 6:44 AM, Richard B. Langley mailto:l...@unb.cal...@unb.ca wrote: http://rhodesmill.org/pyephem/rise-set.html#naval-observatory-risings-and-settingshttp://rhodesmill.org/pyephem/rise-set.html#naval-observatory-risings-and-settings On Sep 4, 2013, at 6:45 AM, Tony Finch mailto:d...@dotat.atd...@dotat.at wrote: http://risacher.org/sunwait/http://risacher.org/sunwait/ --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: sunrise/set/twilight calculators ?
how about altitude - CTIO shows as 2200 meters... Sent from my iPad On Sep 4, 2013, at 8:49 AM, Rob Seaman sea...@noao.edu wrote: And the winners are: Pyephem turns out to be layered on Elwood Downey's Xephem - can't go wrong there! However, rather than the usual python package management minuet, sunwait is an old-school software tool - just compile and run giving all the numbers I asked for with one command: % ./sunwait -p 30.1697S 70.8065W Using location: 30.169700S, 70.806500W Date:4 Sep 2013 Local time: 11:31 Day length: 11:39 hours With civil twilight 12:25 hours With nautical twilight 13:20 hours With astronomical twilight 14:16 hours Length of twilight: civil 0:22 hours nautical 0:50 hours astronomical 1:18 hours Current specified time zone: CLT (-4 from UTC) Sun transits meridian 1241 CLT Sun rises 0653 CLT, sets 1830 CLT Civil twilight starts 0629 CLT, ends 1854 CLT Nautical twilight starts 0601 CLT, ends 1922 CLT Astronomical twilight starts 0533 CLT, ends 1949 CLT Interested in the nights not the days so will have to run it for the preceding date, too. Will add moonrise/set/phase some other time :-) Thanks! Rob -- On Sep 4, 2013, at 6:44 AM, Richard B. Langley l...@unb.ca wrote: http://rhodesmill.org/pyephem/rise-set.html#naval-observatory-risings-and-settings On Sep 4, 2013, at 6:45 AM, Tony Finch d...@dotat.at wrote: http://risacher.org/sunwait/ --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: sunrise/set/twilight calculators ?
On Sep 4, 2013, at 1:01 PM, Dave Bell db...@thebells.net wrote: how about altitude - CTIO shows as 2200 meters… I emailed Richard but didn't cc the list: On Sep 4, 2013, at 11:52 AM, Rob Seaman sea...@noao.edu wrote: Hi Richard, Pretty close. Haven't worried about altitude or refraction (not even sure what that means when the Sun is below the real or refracted horizon) or the limb versus the center of the solar disk, etc. (Not to mention neighboring mountain peaks :-) For this purpose just want something useful for observation tracking and scheduling and various figures of merit. It also needs to be inverted to give length of night rather than day :-) astronomical night = 9:43 nautical night = 10:38 civil night = 11:34 length of night = 12:21 The folks doing the photometry for the survey in question are modeling the moonless night sky brightness, etc. I explicitly didn't want that level of detail. Thanks to everybody! Rob --- https://lists.uni-koeln.de/mailman/listinfo/sundial
