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?


6th Dec 2018: Sector 1 and 2 data now available at MAST

The first batch of TESS mission data is now available through MAST. This release includes all data from Sectors 1 and 2, observed between July 25 and September 20, 2018. This includes both FFI and 2-min cadence data.

The first release of the TESS instrument handbook is also available, as …

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4th Dec 2018: Web TESS Viewing Tool updated for Cycle 2

The popular tool for determining when a target will be observed by TESS -- Web TESS Viewing Tool (WTV) -- has been updated to include both year 1 and year 2 of TESS.

Below is an image of the first Cycle 2 sector, showing just camera 3. The Kepler field is overlaid …

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3rd Dec 2018: TESS Sector 1 and 2 data to be available on December 6

TESS data products from Sectors 1 and 2 will begin to go public starting Thursday December 6 at 9:00 AM US EST. These data will be available at the MAST archive. Both Full Frame Images and 2-minute cadence postage stamps will be included in the release.

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Tweets from TESS