From rbaer25 at gmail.com  Mon Apr  4 04:26:56 2022
From: rbaer25 at gmail.com (Rudolf Baer)
Date: Mon, 4 Apr 2022 10:26:56 +0200
Subject: [AstroPy] astropy timeseries Gaia
Message-ID: <8F33B1AB-289C-4719-8FFC-8082846A5F2F@gmail.com>

I am trying to use the time series for light curves of Gaia DR2. The documentation shows only two formats: kepler.fits and tess.fits.
The Gaia data light curve data are originally in csv format; via topcat I can save them in .fits or votable formats, and I can read and plot them without problems. However they do not work with timeseries. I show a partial screen shot of the format   in topcat. The time is the Onboard time of Gaia.

 <https://user-images.githubusercontent.com/10469522/161422214-94a52e34-eac1-4517-9d53-3155e1626303.png>
Any specific advice will be highly appreciated
Rudolf Baer

PS: Are there any plans to have specific gaia format? A mayor Gaia DR3 release will be on June 13, 2022
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From adrianmpw at gmail.com  Mon Apr  4 16:05:41 2022
From: adrianmpw at gmail.com (Adrian Price-Whelan)
Date: Mon, 4 Apr 2022 16:05:41 -0400
Subject: [AstroPy] astropy timeseries Gaia
In-Reply-To: <8F33B1AB-289C-4719-8FFC-8082846A5F2F@gmail.com>
References: <8F33B1AB-289C-4719-8FFC-8082846A5F2F@gmail.com>
Message-ID: <CAEUL7mEtPkCxf-qWC+twjH2hHxC-qwDyXwexKOyEdPPcC6CmZg@mail.gmail.com>

Hi Rudolf,

I think it would be great to support reading Gaia data
in astropy.timeseries!

I have some questions about the implementation, but maybe we should move
this discussion into a GitHub issue -- do you want to open an issue about
this in the astropy repository?
https://github.com/astropy/astropy/issues

best,
Adrian


On Mon, Apr 4, 2022 at 4:27 AM Rudolf Baer <rbaer25 at gmail.com> wrote:

> I am trying to use the time series for light curves of Gaia DR2. The
> documentation shows only two formats: kepler.fits and tess.fits.
> The Gaia data light curve data are originally in csv format; via topcat I
> can save them in .fits or votable formats, and I can read and plot them
> without problems. However they do not work with timeseries. I show a
> partial screen shot of the format   in topcat. The time is the Onboard time
> of Gaia.
>
> [image: Screenshot 2022-04-03 at 11 42 17]
> <https://user-images.githubusercontent.com/10469522/161422214-94a52e34-eac1-4517-9d53-3155e1626303.png>
>
> Any specific advice will be highly appreciated
> Rudolf Baer
> PS: Are there any plans to have specific gaia format? A mayor Gaia DR3
> release will be on June 13, 2022
> _______________________________________________
> AstroPy mailing list
> AstroPy at python.org
> https://mail.python.org/mailman/listinfo/astropy
>


-- 
Adrian M. Price-Whelan (he / him)
Associate Research Scientist
Center for Computational Astrophysics
Flatiron Institute
http://adrn.github.io
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From rbaer25 at gmail.com  Tue Apr  5 05:47:10 2022
From: rbaer25 at gmail.com (Rudolf Baer)
Date: Tue, 5 Apr 2022 11:47:10 +0200
Subject: [AstroPy] astropy timeseries Gaia
In-Reply-To: <CAEUL7mEtPkCxf-qWC+twjH2hHxC-qwDyXwexKOyEdPPcC6CmZg@mail.gmail.com>
References: <8F33B1AB-289C-4719-8FFC-8082846A5F2F@gmail.com>
 <CAEUL7mEtPkCxf-qWC+twjH2hHxC-qwDyXwexKOyEdPPcC6CmZg@mail.gmail.com>
Message-ID: <CAJyeFFfzm0iGeKk-0quxSAMfFXz7Yci45zfR9BirdOSqcszU_g@mail.gmail.com>

Hi Adrian
I have done it as suggested. Please have a look at it and let me know
whether this is ok - I do not have a lot of experience with github.
With best regards
Rudolf


On Mon, Apr 4, 2022 at 10:06 PM Adrian Price-Whelan <adrianmpw at gmail.com>
wrote:

> Hi Rudolf,
>
> I think it would be great to support reading Gaia data
> in astropy.timeseries!
>
> I have some questions about the implementation, but maybe we should move
> this discussion into a GitHub issue -- do you want to open an issue about
> this in the astropy repository?
> https://github.com/astropy/astropy/issues
>
> best,
> Adrian
>
>
> On Mon, Apr 4, 2022 at 4:27 AM Rudolf Baer <rbaer25 at gmail.com> wrote:
>
>> I am trying to use the time series for light curves of Gaia DR2. The
>> documentation shows only two formats: kepler.fits and tess.fits.
>> The Gaia data light curve data are originally in csv format; via topcat I
>> can save them in .fits or votable formats, and I can read and plot them
>> without problems. However they do not work with timeseries. I show a
>> partial screen shot of the format   in topcat. The time is the Onboard time
>> of Gaia.
>>
>> [image: Screenshot 2022-04-03 at 11 42 17]
>> <https://user-images.githubusercontent.com/10469522/161422214-94a52e34-eac1-4517-9d53-3155e1626303.png>
>>
>> Any specific advice will be highly appreciated
>> Rudolf Baer
>> PS: Are there any plans to have specific gaia format? A mayor Gaia DR3
>> release will be on June 13, 2022
>> _______________________________________________
>> AstroPy mailing list
>> AstroPy at python.org
>> https://mail.python.org/mailman/listinfo/astropy
>>
>
>
> --
> Adrian M. Price-Whelan (he / him)
> Associate Research Scientist
> Center for Computational Astrophysics
> Flatiron Institute
> http://adrn.github.io
> _______________________________________________
> AstroPy mailing list
> AstroPy at python.org
> https://mail.python.org/mailman/listinfo/astropy
>
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From pdzwig at summaventures.com  Tue Apr  5 12:32:32 2022
From: pdzwig at summaventures.com (Peter Dzwig)
Date: Tue, 5 Apr 2022 17:32:32 +0100
Subject: [AstroPy] Noise region usage
Message-ID: <7a77a99f-321d-de45-1188-84acea84a62e@summaventures.com>

I am using correlation.template_correlate to compare a reference and an 
observed spectrum. In fact I am looking at a range which may contain 
several lines

As I understand it I have to provide an uncertainty with the observed 
spectrum. I estimate it using noise_region_uncertainty.

The docs say for noise_region_uncertainty:

"Parameters

     spectrum    Spectrum1D

         The spectrum to which we want to set the uncertainty.

     spectral_region   SpectralRegion

         The region to use to calculate the standard deviation."

Elsewhere on the Manipulation pages, under noise estimation it says to:

"estimate the uncertainty from the region that does not contain the line"

In other words use a sub-spectrum away from the areas of interest to 
estimate the noise.

However when I do so I get an error indicating that the two samples 
aren't of the same length. Surely the noise estimation region should be 
"long enough" to get a decent estimate of the uncertainty, but there's 
no need for it to be the same length as the whole spectrum.

An I correct or mis-reading the docs?

Thanks
-- 

Dr. Peter Dzwig

From pdzwig at summaventures.com  Sat Apr 23 11:18:55 2022
From: pdzwig at summaventures.com (Peter Dzwig)
Date: Sat, 23 Apr 2022 16:18:55 +0100
Subject: [AstroPy] specutils.analysis.correlation
Message-ID: <80e797cc-2551-77a5-65da-fd8d1035e2fd@summaventures.com>

Can people clear up a few points for me on this.

(i) Is specutils.analysis.correlation just scipy's correlation adapted 
to handle Spectrum1Ds;

(ii) Does it require the two input spectra to have been resampled before 
input, or is *all* necessary resampling done internally;

(iii) what technique is used for calculating the correlations?

I am trying to compare this to another approach and I can't find 
sufficient detail in the docs for what I need.

Many thanks,

Peter
-- 

Dr. Peter Dzwig

From pdzwig at summaventures.com  Sun Apr 24 06:13:36 2022
From: pdzwig at summaventures.com (Peter Dzwig)
Date: Sun, 24 Apr 2022 11:13:36 +0100
Subject: [AstroPy] RECALL:  specutils.analysis.correlation
In-Reply-To: <80e797cc-2551-77a5-65da-fd8d1035e2fd@summaventures.com>
References: <80e797cc-2551-77a5-65da-fd8d1035e2fd@summaventures.com>
Message-ID: <b41133b6-4ebe-f52c-9338-9cfb63f957ab@summaventures.com>

Please ignore last night's mail as the issues have most likely been 
resolved in the interim.

Many thanks,

Peter

On 23/04/2022 16:18, Peter Dzwig wrote:
> Can people clear up a few points for me on this.
> 
> (i) Is specutils.analysis.correlation just scipy's correlation adapted 
> to handle Spectrum1Ds;
> 
> (ii) Does it require the two input spectra to have been resampled before 
> input, or is *all* necessary resampling done internally;
> 
> (iii) what technique is used for calculating the correlations?
> 
> I am trying to compare this to another approach and I can't find 
> sufficient detail in the docs for what I need.
> 
> Many thanks,
> 
> Peter

-- 

Dr. Peter Dzwig

From simon at sconseil.fr  Sat Apr 30 17:27:31 2022
From: simon at sconseil.fr (Simon Conseil)
Date: Sat, 30 Apr 2022 23:27:31 +0200
Subject: [AstroPy] astropy v5.1rc1 ready for testing
Message-ID: <bb0b0ba46a4a09a9959e95b41c206d0a13366b8b.camel@sconseil.fr>

Hi everyone,

The first release candidate (RC) of the core astropy package for the
v5.1 release is now available and ready for testing!

If you are interested in trying it out, you can install this release
candidate by doing:

pip install astropy --pre

or

pip install astropy==5.1rc1

You can find the documentation corresponding to this release at:


https://docs.astropy.org/en/v5.1rc1/

including the full list of changes for this release:



https://docs.astropy.org/en/v5.1.x/changelog.html

as well as a 'What's new in v5.1?' page:


https://docs.astropy.org/en/v5.1rc1/whatsnew/5.1.html

We would appreciate if you could try out this RC and report back
any success or failure via the following wiki page:


https://github.com/astropy/astropy/wiki/v5.1-RC-testing

For example, you can try running the test suite as mentioned on the
wiki page. In addition, if you maintain any packages that use astropy,
please check that your package(s) works well with this RC and let us
know if there are any issues or whether everything works fine. There is
a section to list packages that work/don't work at the bottom of the
wiki page. Please also open an issue in the astropy core package issue
tracker for any issues you encounter (and open separate issues for each
problem you run into).

If you use conda, be sure to either remove the existing conda astropy
package or make a new environment before installing the RC. Note that
there are no conda packages for the RC.

Thanks!
Simon (release manager for v5.1)