Notes
Scopes of the workshop
Understanding basic principle of Very Long Baseline Interferometry (VLBI)
Performing standard reduction, calibration and imaging of VLBA data using AIPS and DIFMAP
Target Data
The target data for the workshop is 1633+382 (4C 38.41). It is a flat spectrum radio quasar (FSRQ) with a redshift of z = 1.81407 (Ahumada et al. 2020). We will use archive 12 GHz observation data from VLBA, obtained during Nov 2008. 1633+382 has a clear core component with an extended component towards the west of the core. This makes the calibration and imaging of the source relatively simple and straightforward. Upon completion of the calibration and imaging processes, participants should be able to obtain a clean map of the source.
System requirements
Throughout the tutorial, Unix systems (Linux, mac,...) are required to run AIPS and DIFMAP.
Please allocate at least 30 GB space for the virtual machine to avoid any insufficient storage errors.
If you want to make the program running smoother and faster, please allocate at least 4 GB RAM before you start the Virtual Machine. You can re-allocate your desired RAM after the workshop.
To install Unix, AIPS and DIFMAP, moves to their respective tab for further installation steps.
VLBI Techniques
Please read the notes below before the tutorial for better understanding of VLBI techniques
Chapter 1: Principles of Interferometry
https://drive.google.com/file/d/1R3T1PMDs6I-HVwM1LPGv5x-2I8Ej9F4N/view
Chapter 2: Aperture Synthesis
https://drive.google.com/file/d/1B9o9M3s-N7MaDY-_ZERGevoR7O47eIjX/view?usp=sharing
Chapter 3: Calibration
https://drive.google.com/file/d/1i3fN8YMT23uzqEMpocrp-8NUMcr7WIzc/view?usp=sharing
Chapter 4: Imaging
https://drive.google.com/file/d/1m_gZ5EOome_PlBjxiwLMkd3T9YX9SiXH/view