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T0007 CFHTLS Released

The final (T0007) releaes of the CFHTLS processing from Terapix is now available

PI Regisrtation and access management

Image Cutout Service

The CFHT Image Cutout Serive is back. For Usage information please checkout the getCutout page.

PI Regisrtation and access management

Now, using the PI registrtion form, you can link your CADC user name to a list of CFHT Run IDs whose 'access codes' sent to you by the DADs system at CFHT. Each semester CFHT will provide individual PIs with an authentication code that can be used to provide access to PI data through the CADC web interface.

To use this system you must register for a CADC user account.

Registered and authenticated PI's can also assign access priviledges to other CADC accounts by using the Group Membership list on the PI registration form. This allows the PI to assign or remove access rights for groups of users who may be associated with a joint project, without having to share their CADC account password.

CFHTLS Terapix First World Data Release

The first world release of CFHTLS stacks occurred on Feb. 16 2007. TeraPix stacks are the co-addition of the 'Elixir detrended', astrometric alligned (Scamp) and resampled (SWarped) CFHTLS images acquired as part of the DEEP and Wide Surveies.

For each Field in this release we provide:

Single Filter Stack:
Addition of all images taken, grouped by filter.
Deep CHI2 image:
combined image using deep single filter stack (3 or 5 filters combined)
Weight Map:
An image that accounts for variying coverage of the stacks. Stacks are built from many 'dithered' images and individual pixels have varying sensitivity.
Catalogs
Photometric/shape catalogs of sources detected in the STACK images. Catalogs with the word 'chi2' in the catalog name are built from sources detected in the CHI2 images but measured in the STACK image. Catalogs with '_wo_' in the filename have had offsets applied to the photometric measurements to allign the measured stellar sequence to theoritical models.

For more information about the stack products please visit the Terapix T0003 Release Page

The [New] CFHT Archive

This page presents a World-Wide-Web link into the CADC's CFHT Catalog, the listing of observations obtained with the Canada-France-Hawaii Telescope on Mauna Kea, Hawaii, from February 1990 to the present.

These pages were redisgned in the Summer of 2006 to bring the CFHT archive pages into the same "Look-and-Feel" as the Gemini, HST and CGPS archive sites. Part of this transition included migrating the archive services to our new LINUX based www servers.

The forms inside the CADC:CFHT archive allows searches by observation meta-data, such as object name and project ID, and presents the results of the search in a tabular format. The Archive Data Retrieval facility allows CFHT users to request and receive archival data and, for some imaging data, also provides previews of CFHT data.

Note that proprietary data can be retrieved only by the Principal Investigator (PI) of the observing run in question. The current proprietary period for CFHT data is 1 year from the time of the observation. Proprietary data may be requested only if written authority from the PI is provided to the CADC.

You can search the entire catalogue of CFHT exposures, search by groups of instruments, or search an individual instrument catalogue.