Improve readme badges, add server status badge

README.md

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 # skycalc_ipy
 
-[![Documentation Status](https://readthedocs.org/projects/skycalc-ipy/badge/?version=latest)](https://skycalc-ipy.readthedocs.io/en/latest/?badge=latest)
-[![Workflow Status](https://github.com/AstarVienna/skycalc_ipy/actions/workflows/tests.yml/badge.svg)](https://github.com/AstarVienna/skycalc_ipy/actions/workflows/tests.yml)
+[![Build Status](https://github.com/AstarVienna/skycalc_ipy/actions/workflows/tests.yml/badge.svg)](https://github.com/AstarVienna/skycalc_ipy/actions/workflows/tests.yml/badge.svg)
+![Server Status](https://img.shields.io/website?url=https%3A%2F%2Fetimecalret-002.eso.org%2Fobserving%2Fetc%2F&label=ESO%20ETC%20server)
 
-[![](http://github-actions.40ants.com/AstarVienna/skycalc_ipy/matrix.svg)](https://github.com/AstarVienna/skycalc_ipy)
+[![Documentation Status](https://readthedocs.org/projects/skycalc-ipy/badge/?version=latest)](https://skycalc-ipy.readthedocs.io/en/latest)
+[![codecov](https://codecov.io/gh/AstarVienna/skycalc_ipy/graph/badge.svg)](https://codecov.io/gh/AstarVienna/skycalc_ipy)
+[![PyPI - Version](https://img.shields.io/pypi/v/skycalc-ipy)](https://pypi.org/project/skycalc-ipy/)
+[![Python Version Support](https://github-actions.40ants.com/AstarVienna/DevOps/matrix.svg?only=Tests.build.ubuntu-latest)](https://github.com/AstarVienna/ScopeSim)
 
 [![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)
 
 A python package which mirrors the functionality of 
-[ESO's ``skycalc_cli`` utility](https://www.eso.org/observing/etc/doc/skycalc/helpskycalccli.html),
+[ESO's `skycalc_cli` utility](https://www.eso.org/observing/etc/doc/skycalc/helpskycalccli.html),
 but can be used from within an ipython session or Juypter notebook.
 
 # Documentation