Welcome to TESS Asteroseismic Science Operations Center

The TESS Asteroseismic Science Operations Center (TASOC) provides asteroseismological data from the NASA TESS mission to astronomers who are members of the TESS Asteroseismic Science Consortium (TASC). It is also the platform used to facilitate the international collaborations within TASC.

If you are a member of TASC, please log in below...

In order to have access to TASOC you have to be a member of TASC. Please see the "New TASC member" page on how to become a member.


12th Nov 2018: Help for reading FITS files

We have added some small code-snippets on how to load in FITS files in various languages (Python, IDL, Matlab) under "Documentation and Help".

In the future, the plan is that the TASOC website will also provide ASCII versions of light curves, as an alternative to the FITS files. These do use more disk-space than their FITS counterparts and will contain less information, so we would recommend to use FITS if possible.

6th Nov 2018: Second data release

We are pleased to announce the second release of TESS data for asteroseismology from the TASC Coordinated Activity T'DA.
For this release 79 TOI targets from TESS sectors 1 and 2 have been analysed. These targets are primarily of interest to TASC WGs 1+2 (planet hosting stars and solar-like oscillators). Please note that this data is optimized for asteroseismology, and therefore the planetary transit signals have been intentionally removed.

19th Oct 2018: List of TOIs

We have added a "live" list of the TESS Objects of Interest in the sidebar to the left. Here you can find a complete list of all TOIs that is continuously updated as new TOIs are released or updated.

TESS mission clock

Launch Countdown:

Where is TESS right now?


4th Oct 2018: Preliminary Target Pixel Files from TESS Object of Interest Alerts Now Public at MAST

After completing commissioning and initiating science data collection on July 25th, NASA’s newest planet hunter, the Transiting Exoplanet Survey Satellite, has now completed its first two 27-day science observation sectors and has begun delivering its wealth of data to the ground. The TESS data are being passed through the …

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4th Oct 2018: TESS Special Session at Winter AAS

A Special Session "TESS: Early Results and Future Plans” is scheduled for Tuesday, 8 January, 10:00 AM - 11:30 AM at the winter AAS meeting in Seattle, WA.

The deadline for regular abstract submission of the 233rd AAS meeting to Wednesday, 10 October (9:00 pm ET). The session …

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23rd Sep 2018: Guest Investigator Program Cycle 2 deadline moved to February 2019

The TESS Guest Investigator Program Cycle 2 deadline is being pushed back to February 2019. At this time we will be soliciting programs that target Northern Ecliptic Hemisphere fields. The NSPIRES page is in the process of being updated. With the first release data planned for before the end of …

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