NASA Exoplanet Science Institute

On July 4 (UT), the Deep Impact spacecraft intercepted comet Tempel 1. Director's time at the W. M. Keck Observatory was allocated in order to observe the comet with the High Resolution Echelle Spectrograph (HIRES) on Keck 1, as well as the Near Infrared Spectrometer (NIRSPEC) on Keck 2.

These data comprised an early public release of data from the Keck Observatory Archive (KOA), which began providing public access to non-proprietary HIRES data in July 2006.

For help downloading HIRES and NIRSPEC Deep Impact observations, please see the download user's guide, or contact the KOA Helpdesk.

HIRES Data

NIRSPEC Data

Weather Data

HIRES Data:

Pre-packaged TAR Files:
HIRES data are also available for bulk download as gzipped TAR files, including text logs and guide images:

July 4, 2005 (UT) - impact observations

Level 0 (uncalibrated) data - HIRES_20050704.tar.gz 1.4 GB
Contains:
- 21 science files (FITS)
- 64 calibration files (FITS)
- README
- Observing Log
- Observing Assistant's Log
- 16 guider images available from throughout the night

May 30, 2005 (UT) - pre-impact observations

Level 0 (uncalibrated) data - preDI_HIRES_20050530.tar.gz 1.2 GB
Contains:
- 4 science files (FITS)
- 62 calibration files (FITS)
- README
- Observing Log
- Observing Assistant's Log
- Guider image during one of the comet exposures: FITS (G-zipped), JPG (screenshot)
Level 1 (reduced) data - preDI_HIRES_20050530_reduced.tar.gz 141 MB
Contains:
- README describing directory contents and data reduction procedure
- FITS and PostScript versions of extracted spectra for each individual CCD (generated using makee)
- JPEG images of spectra from 3 CCDs stitched together (not for science use)
- "makee" pipeline intermediate products

NIRSPEC Data:

The NIRSPEC data from observation of the impact are available as a gzipped TAR file:

July 4, 2005 (UT):
- TAR file: k2nirspec04jul05.tar.gz 485 MB
- Observing log (imager): k2nirspec04jul05imageLog
- Observing log (spectrograph): k2nirspec04jul05specLog

Weather Data:

Weather data includes archived CONCAM webpages and images (when available), as well as WMKO-generated weather plots:

Impact - July 4, 2005:
- Guide star FWHM measurements: (PS) (PDF)
- Weather measurement plots: (PS) (PDF)
Pre-impact - May 30, 2005:
- CONCAM webpages for May 30 2005
- Guide star FWHM measurements: (PS) (PDF)
- Weather measurement plots: (PS) (PDF)

The Keck Observatory Archive has been made possible by funding provided by the National Aeronautics and Space Administration to Caltech and the W. M. Keck Observatory. The W. M. Keck Observatory Director Fred Chaffee is thanked for donating his director's time for the HIRES observations of Tempel 1 and for providing the data to the public. Thanks also to Dr. Mike Bolte for making part of his observing time available for the pre-impact observations.

Please contact KOA Support with questions or problems.