1. PyMorph: Automated Galaxy Structural Parameter Estimation using Python - Vivek, VO-India

2. PyMorph Developed by Vinu Vikram (IUCAA)
Does parametric fits through two dimensional bulge disc decomposition
Uses SExtractor (Emmanuel Bertin) & Galfit (Chien Peng)
Also supports structural parameter measurements
Concentration Index, Asymmetry, Clumpiness, Gini coefficient, M20
Uses SExtractor, algos from Consoleice (2003) and Lotz et al. (2004)

5. 3) Mosaic web application output tab. We see a list of jobs submitted
3) Mosaic web application output tab. We see a list of jobs submitted .. Clicking job number shows the results in a table below the submitted jobs table

6. 4) The results of the job submitted – files retrieved and cutout/mosaic made can be loaded in Aladin. PNG image previews are also provided

7. == PYMORPH SCREENS START ===
Simple pymorph form. User can configure more parameters by clicking Show/Hide all config params option

8. Part of the full configuration of pymorph

9. User can select the image file to be fed to pymorph and its weight map by clicking “Select file from VOI userspace”. (the popup shown comes up upon clicking)
Note that here I am selecting the files which were produced by the mosaic service. Clicking the file link to select a file.
User will be able to instead simply paste an URL in the image / wheight text boxes.

10. Pymorph JOB SUBMITTED

11. Pymorph – output tab showing the jobs submitted
Pymorph – output tab showing the jobs submitted. Clicking the job number will show the progress/results of the job.

12. Sample results showing the details of galfit run

13. Another good fit.

14. Implementation details
SIA for fetching images
Code for fetching weight images though is a hack as of now
OpenAM (OpenSSO) for single sign on between mosaic and pymorph web-apps
VOSpace over a local file system
Need to add support for credential delegation between applications and VOSpace

15. Still to be supported in the web version
Manual confirmation of the PSFs selected
Rerun the pipeline with a modified set of parameters upon a bad fit

16. VOIPortal

17. Thanks !