Re: Mars model ; uranus model
Dear friends of XEphem,
I can see files with names similar to those mentioned by Elwood in the following directory:
This includes, among others, jupiter.2040, mars.2040, saturne.2040 and uranus.2040.
Would they help?
Yours,
Maxime
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Le 10/09/2021 ¨¤ 08:15, Bernie Walp a ¨¦crit?: It looks like those moon models came from the Bureau des Longitudes. The XEphem bdl.c code mentions an FTP site that isn't there any more. The Wiki Pedia says BDL's ephemeris functions have been taken over by Institut de M¨¦canique C¨¦leste et de Calcul des ?ph¨¦m¨¦rides but I can't get into imcce.fr by anonymous FTP to see whether they have a directory analogous to the one mentioned in the XEphem code.
Someone more knowledgeable than myself would have to look at this.? I haven't divined from the bdl.c code what all the various fields in the XEphem model files are.
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Re: Mars model ; uranus model
It looks like those moon models came from the Bureau des Longitudes. The XEphem bdl.c code mentions an FTP site that isn't there any more. The Wiki Pedia says BDL's ephemeris functions have been taken over by Institut de M¨¦canique C¨¦leste et de Calcul des ?ph¨¦m¨¦rides but I can't get into imcce.fr by anonymous FTP to see whether they have a directory analogous to the one mentioned in the XEphem code.
Someone more knowledgeable than myself would have to look at this. I haven't divined from the bdl.c code what all the various fields in the XEphem model files are.
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On 9/9/21 5:53 PM, Elwood Downey wrote: Those messages refer to the moons, not the planets. But yes, the last model I installed expired Jan 1 2021.
The models were generated by an observatory in France, the details escape me at the moment but there's another thread on here somewhere where someone was trying to track it down and get updates. There are separate files for moons of mars, jupiter, saturn and uranus named mars.1020 etc (where 1020 means the model is good from 2010 to 2020). Once you get the new model files in auxil, each instance of use_bdl() in the four corresponding *moon.c source code files also needs updating to accept the new date range of the models. Or better yet, continue with my file naming convention and change the code to infer the file name automatically, then no future code changes would be required.
Elwood
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Re: Mars model ; uranus model
BTW, don't be tempted to extend the date ranges of a model just to get something working again. These models are high-order polynomials and become wildly inaccurate even slightly outside their design date range.
Elwood
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Re: Mars model ; uranus model
Thanks, Elwood,
Bernie
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On 9/9/21 5:53 PM, Elwood Downey wrote: Those messages refer to the moons, not the planets. But yes, the last model I installed expired Jan 1 2021.
The models were generated by an observatory in France, the details escape me at the moment but there's another thread on here somewhere where someone was trying to track it down and get updates. There are separate files for moons of mars, jupiter, saturn and uranus named mars.1020 etc (where 1020 means the model is good from 2010 to 2020). Once you get the new model files in auxil, each instance of use_bdl() in the four corresponding *moon.c source code files also needs updating to accept the new date range of the models. Or better yet, continue with my file naming convention and change the code to infer the file name automatically, then no future code changes would be required.
Elwood
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Re: Mars model ; uranus model
Those messages refer to the moons, not the planets. But yes, the last model I installed expired Jan 1 2021.
The models were generated by an observatory in France, the details escape me at the moment but there's another thread on here somewhere where someone was trying to track it down and get updates. There are separate files for moons of mars, jupiter, saturn and uranus named mars.1020 etc (where 1020 means the model is good from 2010 to 2020). Once you get the new model files in auxil, each instance of use_bdl() in the four corresponding *moon.c source code files also needs updating to accept the new date range of the models. Or better yet, continue with my file naming convention and change the code to infer the file name automatically, then no future code changes would be required.
Elwood
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Mars model ; uranus model
XEphem 4.0.2 installed here effortlessly. Many thanks.
The messages "No Mars model" and "No uranus model" occur still. Is that because the data are not current in the auxil/ subdirectory files? I am poking through documentation without any luck so far.
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On 6/24/21 4:46 AM, Brandon Rhodes wrote: I¡¯ve now returned from some early Summer travel and have finished giving a talk that I¡¯d promised to give at a recent (remote) conference. Now that I¡¯ll be online for the rest of the summer and able to respond to any breakages I cause, I¡¯ve been emboldened to try my hand at an XEphem release from the GitHub source repository.
<>
Thanks to all of you who have been sharing the tweaks and fixes that have gotten XEphem working for you locally, in particular removing the old |-lXp| compile flag and (for Linux users) switching away from the old Motif library bundled with XEphem¡¯s source code so that XEphem can use your distribution¡¯s own up-to-date Motif library compiled against its own X libraries.
I can confirm that XEphem 4.0.2 builds and runs just fine on Ubuntu versions from the old 14.04 all the way up to the current 21.04, with two simple commands:
|sudo apt install build-essential groff-base libmotif-dev libxext-dev libxmu-dev libxt-dev make|
A few questions for the list.
1.
Are there any Debian package maintainers among us? With its new license, XEphem can now qualify to be an official Debian and Ubuntu package for people to effortlessly |apt install|, but I would rather not go through all the steps to become a Debian maintainer myself as I have quite a few projects ongoing already.
2.
I will be happy for the install instructions to expand to cover all UNIX-like operating systems, though I only use Ubuntu myself. If you know of anything that should be added to this list of packages I¡¯ve created in the README <> and the updated compilation instructions in the INSTALL file <> (which currently focus only on Debian/Ubuntu and MacOS), let me know and I will be happy to update them.
3.
At least some MacOS users have been on GitHub discussing segfaults <> when they try compiling and running XEphem. I?do have an old Mac laptop here in the house, but might not have time this summer to try compiling and installing XEphem on it. If anyone knows how to resolve the various issues that have been reported, I¡¯ll be happy to update the repository with any fixes. I¡¯m not familiar enough with the MacOS ecosystem to know whether, for example, something like |brew| might provide the Motif libraries, or whether an XEphem recipe could be added to |brew| to make installing XEphem automatic for its users.
Thanks again to everyone for the helpful recent discussions. Hopefully we¡¯ll soon have XEphem running without snags for everyone who tries it on a modern operating system!
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Re: Xephem is going to the ISS!
Congratulations.
My best wishes, and save flying.
woeimun
On 2/8/21 5:39 am, John Perry via
groups.io wrote:
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--
John Perry
perry@...
Owner/Moderator of XEphem mailing list
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Re: Xephem is going to the ISS!
My best wishes to her!
Emilio
NYC
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On Aug 2, 2021, at 2:46 AM, Mathias Homann <Mathias.Homann@...> wrote:
Am Sonntag, 1. August 2021, 23:39:39 CEST schrieb John Perry via groups.io:
[email protected]
Xephem will be on ISS!
Sun, Aug 1 ? 16:16
SHOW MORE
Most of you have no idea who I am. I'm the maintainer of the Xephem mailing
list.
But I just got word from my *grand-daughter* that she will be flying to the
ISS sometime in the next 2 years and she will be packing a laptop with
Xephem installed.
Let's all wish her well! o7 fly safe to her from me!
and if that laptop is running openSUSE i want a mission patch XD
Cheers
MH
--
Mathias Homann
Senior Systems Engineer, IT Consultant, IT Trainer
Mathias.Homann@... (email,XMPP)
LinkedIn:
telegram:
keybase:
gpg key fingerprint: 8029 2240 F4DD 7776 E7D2 C042 6B8E 029E 13F2 C102
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Re: Xephem is going to the ISS!
Am Sonntag, 1. August 2021, 23:39:39 CEST schrieb John Perry via groups.io: [email protected]
Xephem will be on ISS!
Sun, Aug 1 ? 16:16
SHOW MORE
Most of you have no idea who I am. I'm the maintainer of the Xephem mailing
list.
But I just got word from my *grand-daughter* that she will be flying to the
ISS sometime in the next 2 years and she will be packing a laptop with
Xephem installed.
Let's all wish her well! o7 fly safe to her from me! and if that laptop is running openSUSE i want a mission patch XD Cheers MH -- Mathias Homann Senior Systems Engineer, IT Consultant, IT Trainer Mathias.Homann@... (email,XMPP) LinkedIn: telegram: keybase: gpg key fingerprint: 8029 2240 F4DD 7776 E7D2 C042 6B8E 029E 13F2 C102
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Re: Xephem is going to the ISS!
Of course we will wish her well and much more! God bless her!
Eric.
---------
On Sunday, August 1, 2021, 4:39:40 PM CDT, John Perry via groups.io <groups@...> wrote:
-- John Perry perry@...Owner/Moderator of XEphem mailing list
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Re: Xephem is going to the ISS!
That is so GREAT !! !! !!
Bernie
P.S. I have been using XEphem for ages but really came to love it during the 5 years I worked at SOFIA.
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On 8/1/21 12:12 PM, Elwood Downey wrote: Nice to hear from you John.
This is pretty cool. Thanks for the news. I wish her well.
Not quite as high, but XEphem is also used on SOFIA, they sent me a pin as thanks.
Elwood
On Sun, Aug 1, 2021 at 14:39 John Perry via groups.io <> <groups@... <mailto:[email protected]>> wrote:
[email protected] <mailto:[email protected]>
Xephem will be on ISS!
Sun, Aug 1 ? 16:16
SHOW MORE
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Most of you have no idea who I am. I'm the maintainer of the Xephem mailing list.
But I just got word from my *grand-daughter* that she will be flying to the ISS sometime in the next 2 years and she will be packing a laptop with Xephem installed.
Let's all wish her well!
BTW she has a doctorate in both Astronomy? and Astrophysics.
--
perry@... <mailto:perry@...>
--
John Perry
perry@... <mailto:perry@...>
Owner/Moderator of XEphem mailing list
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Re: Xephem is going to the ISS!
I'll see if I can get a pin or patch for you.
--
perry@...
http://www.jpunix.net
Aug 1, 2021, 17:12 by groups+xephem=groups.io@...:
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Nice to hear from you John.
This is pretty cool. Thanks for the news. I wish her well.
Not quite as high, but XEphem is also used on SOFIA, they sent me a pin as thanks.
Elwood
Most of you have no idea who I am. I'm the maintainer of the Xephem mailing list.
?
But I just got word from my grand-daughter that she will be flying to the ISS sometime in the next 2 years and she will be packing a laptop with Xephem installed.?
?
Let's all wish her well!
?
BTW she has a doctorate in both Astronomy? and Astrophysics.?
?
--
--
John Perry
Owner/Moderator of XEphem mailing list
| This email was sent to groups@... from elwood.downey@... and has been forwarded by
Click to deactivate this alias
|
-- John Perry perry@...Owner/Moderator of XEphem mailing list
|
Re: Xephem is going to the ISS!
Nice to hear from you John.
This is pretty cool. Thanks for the news. I wish her well.
Not quite as high, but XEphem is also used on SOFIA, they sent me a pin as thanks.
Elwood
Most of you have no idea who I am. I'm the maintainer of the Xephem mailing list.
?
But I just got word from my grand-daughter that she will be flying to the ISS sometime in the next 2 years and she will be packing a laptop with Xephem installed.?
?
Let's all wish her well!
?
BTW she has a doctorate in both Astronomy? and Astrophysics.?
?
--
--
John Perry
perry@...
Owner/Moderator of XEphem mailing list
|
Re: Xephem is going to the ISS!
No details yet as she is going into ISS training but I assure you I will post updates.
--
perry@...
http://www.jpunix.net
Aug 1, 2021, 16:52 by groups+xephem=groups.io@...:
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Please let the list
know the mission details near the launch date so we can follow
more closely.
Warmest regards,
trane
//
// Trane Francks trane@... Tokyo, Japan
// Practice random kindness and senseless acts of beauty.
On 2021/08/02 6:39, John Perry via
groups.io wrote:
Most of you have
no idea who I am. I'm the maintainer of the Xephem mailing
list.
?
But I just got
word from my grand-daughter that she will
be flying to the ISS sometime in the next 2 years and she
will be packing a laptop with Xephem installed.?
?
Let's all wish
her well!
?
BTW she has a
doctorate in both Astronomy? and Astrophysics.?
?
--
--
John Perry
Owner/Moderator of XEphem mailing list
| This email was sent to groups@... from trane@... and has been forwarded by
Click to deactivate this alias
|
-- John Perry perry@...Owner/Moderator of XEphem mailing list
|
Re: Xephem is going to the ISS!
Please let the list
know the mission details near the launch date so we can follow
more closely.
Warmest regards,
trane
//
// Trane Francks trane@...
Tokyo, Japan
// Practice random kindness and senseless acts of beauty.
On 2021/08/02 6:39, John Perry via
groups.io wrote:
toggle quoted message
Show quoted text
--
John Perry
perry@...
Owner/Moderator of XEphem mailing list
|
Xephem is going to the ISS!
-- John Perry perry@...Owner/Moderator of XEphem mailing list
|
Please find attached the world magnetic model file valid for 2020-2025. Replace auxil/wmm.cof with this file and your declination value will function again. This should be the default in the various prepared packages.
Thanks for the reminder, I have confirmed at least that the `GUI/xephem/auxil/wmm.cof` file in the GitHub repository is up to date!
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Please find attached the world magnetic model file valid for 2020-2025. Replace auxil/wmm.cof with this file and your declination value will function again. This should be the default in the various prepared packages.
Elwood
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Re: New XEphem 4.0.2 release
On Wed, 7 Jul 2021 19:54:29 +0800 "How Woei Mun" <how.woeimun@...> wrote: Hi Mathias,
Mint is ubuntu based.
woeimun And in terms of the two major types, ubuntu is debian based. But Mint is highly customized for ease of use. I run Mageia, the successor to Gael Duval's Mandrake (an RPM-based distro) but I have Mint as well. There seem to be many scripts in Mint that make it "different." The OP might have more success with ubuntu itself. I downloaded the latest version, and everything works well, except for the Magnetic North, which doesn't matter to me anyway. Doug.
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Re: New XEphem 4.0.2 release
Thanks Emilio, that info will be very helpfull! ? Greetings from M¨¦rida, Yucat¨¢n, M¨¦xico Running Xephem on FreeBSD 12.2 Eric De La Cruz Lugo.
On Tuesday, July 6, 2021, 12:13:05 PM CDT, Emilio Ortiz Linux <emilioortizlinux@...> wrote:
Hello everybody,
First of all I would like to thank Brandon and Mathias for all the great work done with xephem. I compiled it on Debian 10 with no issues and installed the rpm file Mathias built, on my Fedora 34 VM without any problems. After Mathias announced the AppImage, I downloaded it on my Debian 10, but before I deleted the previous one I compiled, and deleted resources and the XEphem file to give a clean try to the AppImage. It got running but with the same issues that Woei Mun described. The program did not find the resources, so I recreated the resources folder and the XEphem file and the xephem AppImage got running without problems.
Regards, Emilio
On Jun 24, 2021, at 10:46 AM, Brandon Rhodes < brandon@...> wrote:
I¡¯ve now returned from some early Summer travel and have finished giving a talk that I¡¯d promised to give at a recent (remote) conference. Now that I¡¯ll be online for the rest of the summer and able to respond to any breakages I cause, I¡¯ve been emboldened to try my hand at an XEphem release from the GitHub source repository. Thanks to all of you who have been sharing the tweaks and fixes that have gotten XEphem working for you locally, in particular removing the old -lXp compile flag and (for Linux users) switching away from the old Motif library bundled with XEphem¡¯s source code so that XEphem can use your distribution¡¯s own up-to-date Motif library compiled against its own X libraries. I can confirm that XEphem 4.0.2 builds and runs just fine on Ubuntu versions from the old 14.04 all the way up to the current 21.04, with two simple commands:
sudo apt install build-essential groff-base libmotif-dev libxext-dev libxmu-dev libxt-dev
make
A few questions for the list.
Are there any Debian package maintainers among us? With its new license, XEphem can now qualify to be an official Debian and Ubuntu package for people to effortlessly apt install, but I would rather not go through all the steps to become a Debian maintainer myself as I have quite a few projects ongoing already. I will be happy for the install instructions to expand to cover all UNIX-like operating systems, though I only use Ubuntu myself. If you know of anything that should be added to and (which currently focus only on Debian/Ubuntu and MacOS), let me know and I will be happy to update them. At least some MacOS users when they try compiling and running XEphem. I?do have an old Mac laptop here in the house, but might not have time this summer to try compiling and installing XEphem on it. If anyone knows how to resolve the various issues that have been reported, I¡¯ll be happy to update the repository with any fixes. I¡¯m not familiar enough with the MacOS ecosystem to know whether, for example, something like brew might provide the Motif libraries, or whether an XEphem recipe could be added to brew to make installing XEphem automatic for its users.
Thanks again to everyone for the helpful recent discussions. Hopefully we¡¯ll soon have XEphem running without snags for everyone who tries it on a modern operating system!
|
John Perry