Here I put some useful links.

## Astronomy resources

Daily astro-ph updates: astro-ph

astro-ph thumb-up/down (aka astronomers' facebook): VoxCharta

New ADS: ADS 2.0

SIMBAD astronomical objects database: SIMBAD Astronomical Database

Astrobetter (and rumor mill): AstroBetter - Tips and Tricks for Professional Astronomers

Discussions and comments of astro-ph posts: astrobites - the astro-ph reader's digest

Another astro-ph discussion group in Chinese: Astroleaks - Enjoy Astronomy Everyday!

Radio astronomy course at NRAO: Essential Radio Astronomy

Monthly star formation news and reviews: The Star Formation Newsletter

News, resources, and publication list of astrochemistry: The Astrochymist

Harvard Ay201b course site: ISM and Star Formation

Astronomy (mostly star formation) wiki at PMO: SFIG wiki

Circumstellar disks: Catalog of Circumstellar Disks

## Astronomy tools

Molecular spectral lines catalogue: Splatalogue

Intepreting SEDs from YSOs: SED fitting tool

Online object visilibity: Object Visibility - STARALT

Live solar system objects: Solar System Live

LST clock: Local Sidereal Time Clock

GAL/EQU coordinates converter: Astronomical Coordinate Calculator

Reconstructing data from graphs: Dexter for your data

Another option: Plot Digitizer

## Python

A Python tutorial for CfA: Practical Python for Astronomers

A Python course for MPIA: MPIA Python workshop

Python lectures provided by Enthought: Tools to Learn and Develop in Python

AstroPython resources: Astropython: Python for Astronomers

Matplotlib quick tutorial: Matplotlib tutorial

Better plotting design for matplotlib: Implementation of typographic and design principles in matplotlib and iPython notebook

Make plots with Python/IDL/Mathematica: astroplotlib

Examples of visualisation with MayaVI: Python for Research - Visualisation

Another example of visualizing 3D electric field with MayaVI: The beauty of Mayavi

XKCD style plots with matplotlib: XKCD Plots in Matplotlib: Going the Whole Way

Common Python mistakes: 10 Most Common Python Mistakes | Toptal

Some useful Python features and tricks: 30 Python Language Features and Tricks You May Not Know About

'Magic methods' of Python: A Guide to Python's Magic Methods

Use Python for Bayesian inference: Bayesian-Python

Quick Python commands in shell: pythonpy

Python plotting contest: John Hunter Excellence Plotting Contest

## IDL

A guide to IDL for astronomers: Introduction to IDL

IDL astrolib: The IDL Astronomy User's Library

AICer: aicer - Astronomical Image Compounder

Coyote IDL: Coyote's Guide to IDL Programming

IDL mpfit routine: IDL Curve Fitting and Function Optimization

IDL-Python mapping table: Mapping IDL to Python

Use IDL within IPython notebook: IDL Magics for the IPython Notebook

## Miscellaneous

Extreme examples of what you can do with TeX: The TeX showcase

Use Mathematica to make a formula for Sir Issac Newton: Making Formulas for Everything - From Pi to the Pink Panther to Sir Isaac Newton

Mathematica astronomy demonstrations: Astronomy - Wolfram Demonstrations Project

Why should we use A-D test instead of K-S test: Beware the Kolmogorov-Smirnov test!

VisIVO for 3D rendering of astrophysical data: VisIVO Gateway

Display FITS images as 3D surfaces: AAOGlimpse