Welcome to the Hubble Legacy Archive
The Hubble Legacy Archive (HLA) is designed to optimize science from
the Hubble Space Telescope by providing online, enhanced Hubble
products and advanced browsing capabilities. The HLA is a joint
project of the Space Telescope Science Institute (STScI), the Space
Telescope European Coordinating Facility (ST-ECF), and the Canadian
Astronomy Data Centre (CADC).
Enter Site here.
DR9.1 Release (2016 September 29)
NEW DATA PRODUCTS
- Newly processed ACS and WFC3 source lists. Almost all old source lists have been replaced in this catalog. The new source lists have higher quality astrometry and photometry, especially for SExtractor catalogs in crowded fields. These new source lists were used in the construction of version 2 of the Hubble Source Catalog, which is being released simultaneously with HLA DR9.1.
USER INTERFACE ENHANCEMENTS
- The interactive display's advanced HSC controls can be used to
show either the current HSCv2 catalog or the previous HSCv1 catalog.
-
The Gaia DR1 catalog is available
for overlay in the display.
- New controls can change the catalog overlay region to load sources
from only a small part of the image. This greatly improves performance
in large images and crowded regions.
-
See the display help for more information
on the new display features.
See the release notes for more details on this and past releases.
HLA ESSENTIALS
-
The HLA interface runs in Firefox,
Safari,
Chrome,
Internet Explorer
(versions 8* and 9),
and similar compatible browsers.
*IE8 limitations - the scatterplot and plotting tools do not work on IE8 as it does not support HTML5.
-
To fully realize all of the HLA's functionality, one must have
cookies and popups enabled.
-
The HLA includes enhanced data products (ACS, WFPC2,
& NICMOS images, ACS & WFPC2 source lists, ACS &
NICMOS extracted grism spectra, prototype ACS mosaics) and
also provides access to the standard HST data products when
HLA enhanced products have not yet been created.
-
Footprints, which graphically display
the sky coverage on a background
image from the Digitized Sky Survey, are available for both standard
and enhanced HST data products, including extracted grism spectra
and community-contributed high-level science products.
-
Here is a matrix describing what is and is not in the HLA:
|
Instrument/Product
|
Source
|
HLA Enhanced Products
1
|
Download
Format
|
Interactive
Display?
|
Notes:
-
Fraction of all HST data for which the
HLA currently includes enhanced products.
Note that the HLA searches and footprints also
include standard products. Proprietary data
and other data not yet processed by the HLA
project are available through
DADS
requests
(which may also be submitted using the HLA
cart).
-
Contains almost all ACS
data publicly available through 6/9/2015
(for WFC)
or 9/1/2015
(for SBC).
Also includes almost all data from the
HRC, which
ceased operation in January 2007.
-
This is the fraction of HLA-processed ACS/WFC and ACS/HRC visits that have
at least one SExtractor or DAOphot catalog.
-
There are 47,919 extracted ACS grism from 153 archival fields. The most recent data included in
the ACS grism were taken in February 2006.
-
This is the fraction of HLA-processed WFPC2 visits that have
at least one SExtractor or DAOphot catalog.
-
Contains almost all WFC3 direct imaging data (excluding
GRISM, spacial scan, and other non-direct modes) publicly available through 6/1/2014.
-
This is the fraction of HLA-processed WFC3 visits that have
at least one SExtractor or DAOphot catalog.
-
Reprocessed NICMOS data through the
latest STScI calibration pipeline. Data requiring SAAClean have undergone additional
processing and have now been released. See the
NICMOS
Data Handbook for details.
- Enhanced data products have been produced for some of the Early
Release Observation COS data and have been included in the HLA,
together with similar WFC3 data.
As for other HST instruments, standard raw and calibrated products
for non-proprietary COS data are available through both
the MAST
and the HLA interfaces.
|
|
ACS/combined images
|
STScI
|
93%2
|
FITS
|
✔
|
|
ACS/source lists
|
STScI
|
87%3
|
Ascii
|
✔
|
|
ACS/grism extractions
|
ST-ECF
|
70%4
|
FITS
|
|
|
ACS/mosaic images
|
STScI
|
143 images for 67 pointings
|
FITS
|
✔
|
|
WFPC2/combined
images
|
CADC
|
99%
|
FITS
|
✔
|
|
WFPC2/source lists
|
STScI
|
97%5
|
Ascii
|
✔
|
|
WFC3/combined
images
|
STScI
|
90%6
|
FITS
|
✔
|
|
WFC3/source lists
|
STScI
|
88%7
|
Ascii
|
✔
|
|
NICMOS/grism extractions
|
ST-ECF
|
80%, 1-D & 2-D spectra
|
FITS
|
|
|
NICMOS/images
|
STScI
|
100%8
|
FITS
|
✔
|
|
STIS/images and spectra
|
STScI
|
|
FITS
|
✔
|
|
FOS/spectra
|
STScI
|
|
Tar
|
|
|
GHRS/spectra
|
STScI
|
|
Tar
|
|
|
Contributed Products
|
Community9
|
|
FITS
|
✔
|
|
COS
|
MAST
|
|
FITS
|
Enter
Site here.
--- The HLA Team
September 2016
