Helloooo :smile:

Does Astropy (or any of the affiliated packages) has a way to estimate the ellipticity and position angle? I tried with fitting a 2DGaussian model, but that doesn't seem to work very well for bad stars. I am looking for something which could replace IRAF psfmeasure routine.

Does Astropy (or any of the affiliated packages) has a way to estimate the ellipticity and position angle? I tried with fitting a 2DGaussian model, but that doesn't seem to work very well for bad stars. I am looking for something which could replace IRAF psfmeasure routine.

How good is this? https://photutils.readthedocs.io/en/stable/photutils/morphology.html

quite good, I must say.

Hi, I would like to make a symmetric gaussian2D model; I am guessing that the "tied" parameter will help me to do that.

`g_init=models.Gaussian2D(1,8,8,1,1)`

How do I tie the `y_stddev`

and `x_stddev`

together in the above function?

Hi prajwel

you can do something like:

```
def tie(model):
return model.ystddev
```

@mirca Is this a good place to ask questions about the gsoc projects?

and then

`g_init.x_stddev.tied = tie`

Hi @janga1997, well, I’m not the right person to answer this question, but I would say, don’t be shy ;-) Also, you may would like to checkout the OpenAstronomy gitter/slack/matrix channel and the OpenAstronomy Google group: openastronomy@googlegroups.com

@prajwel You may find this page useful: http://docs.astropy.org/en/stable/modeling/fitting.html ;)

@mirca Thanks again! :yellow_heart: :smile:

@eteq I see that you are mentoring for the project of implementing distribution support for quantity.

That seems like something I could do, as I am currently taking a course in Statistics and have done work in Python.

any tips to get started on forming an idea about the project?

@janga1997 - You may have seen that project in an ideas list for a previous year. Projects proposed for this year are listed here: http://openastronomy.org/gsoc/gsoc2017/

Yes, It was pointed out to me. Thanks anyway..

please note though that our organization is not yet accepted for gsoc, we expect to recieve google's decision next week, so projects may change.

I understand that. But I assume astropy has a very good chance of being accepted.

:)

Anyone know what's going on in this issue? https://github.com/astropy/astropy/issues/5736#issuecomment-275249084