These data were generated at the HEASARC in 1994. Certain
gaps and streaks in the image have been fixed by interpolating
over the the gap. Typically these gaps are no more than a pixel
or two wide. A brief description of the satellite and the
data analysis follows. The map used in <i> SkyView </i>
is the map designated <tt> 322_15_tot_ecl_samp.img</tt> in the
<a href=ftp://legacy.gsfc.nasa.gov/heao1/data/a2/maps/heasarc_med_hed>
HEASARC FTP area</a>. Many other maps are available. These differ
in epoch, resolution, energy band,
coordinate system and projection, and sampling methods.
Details are given in the README file in the archive.
<p>
See Allen, Jahoda, and Whitlock (1994) for full details about the
available maps, their processing, and methods for converting the
map intensities into familiar physical units. Provenance: NASA, HEASARC. This is a service of NASA HEASARC.
This survey is a mosaic of data taken at Jodrell Bank, Effelsberg and Parkes
telescopes. The data was distributed in the NRAO <i>Images from the
Radio Sky</i> CD ROM. Provenance: Max Planck Institute for Radio Astronomy, generated by Glyn Haslam. This is a service of NASA HEASARC.
The Canada-France-Hawaii Telescope Legacy Survey is a 5-year program carried out jointly by the Canadian and French agencies. It will use the Megaprime/Megacam instrument mounted at
prime focus of the 3.6m CFH telescope during the period 2003-2008. The Deep survey concerns 4 patchsof 1 square-degree. All will be observed in u,g,r,i and z, with very lon gexposure time<p>
This survey description was generated automatically from the <a href='https://alasky.u-strasbg.fr/CFHTLS-T0007b/Deep/UALLSKY/properties'>HiPS property file</a> Provenance: CFHT<br> HiPS generated by CDS. This is a service of NASA HEASARC.
The Canada-France-Hawaii Telescope Legacy Survey is a 5-year program carried out jointly by the Canadian and French agencies. It will use the Megaprime/Megacam instrument mounted at
prime focus of the 3.6m CFH telescope during the period 2003-2008. The WIDE survey concerns 4 patchs, 3 of about 7x7 square-degrees each and 1 of about 4x4 square-degrees. All will be observed in
u,g,r,i and z, with about 1 hr exposure time per filter<p> This survey description was generated automatically from the <a href='https://alasky.u-strasbg.fr/CFHTLS-T0007b/Wide/UALLSKY/properties'>HiPS property file</a> Provenance: CFHT<br> HiPS generated by CDS. This is a service of NASA HEASARC.
This is the TESS 2yr sky map. The Transiting Exoplanet Survey Satellite (TESS) is the next
step in the search for planets outside of our solar system, including those that could support life.
The mission will find exoplanets that periodically block part of the light from their host stars,
events called transits. TESS will survey 200,000 of the brightest stars near the sun to search for
transiting exoplanets. TESS aims for 50 ppm photometric precision on stars with TESS magnitude 9-15.
TESS launched on April 18, 2018, aboard a SpaceX Falcon 9 rocket. This dataset
is made of observations made during the first 2 years of the mission. See
<a href="https://ui.adsabs.harvard.edu/abs/2015JATIS...1a4003R/abstract">
https://ui.adsabs.harvard.edu/abs/2015JATIS...1a4003R/abstract</a>
for more information on the mission.
Funding for the TESS mission is provided by NASA's Science Mission directorate. Provenance: TESS Data were obtained by using the code provided by Ethan Kruse at https://github.com/ethankruse/tess_fullsky. HiPS generated by CDS. This is a service of NASA HEASARC.
HIPS Survey:Ultradeep survey using the ESO Vista surveys telescope: Band H
Short Name:
UltraVista-H
Date:
07 Mar 2025
Publisher:
NASA/GSFC HEASARC
Description:
UltraVISTA is an Ultra Deep, near-infrared survey with the new VISTA surveys telescope of the European Southern Observatory (ESO). Over the course of 5 years, UltraVISTA will
repeatedly image the COSMOS field in 5 bands covering a 1.5deg^2 field.\n \nESO acknowledgment: Data products from observations made with ESO Telescopes at the La Silla Paranal Observatories under
ESO programme ID 179.A-2005 and on data products produced by TERAPIX and the Cambridge Astronomy Survey Unit on behalf of the UltraVISTA consortium.<p> This survey description was generated
automatically from the <a href='https://alasky.u-strasbg.fr/VISTA/UltraVista/H/properties'>HiPS property file</a> Provenance: Origin unknown. This is a service of NASA HEASARC.
The IRIS data is a reprocessing of the IRAS data set
and has the same geometry as the IRAS Sky Survey Atlas (ISSA,
labeled as IRAS nnn micron in <i>SkyView</i>) surveys.
This new generation of IRAS images, called IRIS,
benefits from a better zodiacal light subtraction,
from a calibration and zero level compatible with DIRBE,
and from a better destriping.
At 100 micron the IRIS product is also a significant improvement
from the Schlegel et al. (1998) maps.
IRIS keeps the full ISSA resolution,
it includes well calibrated point sources and the
diffuse emission calibration at scales smaller
than 1 degree was corrected for the variation of
the IRAS detector responsivity with scale and brightness.
The uncertainty on the IRIS calibration and zero level
are dominated by the uncertainty on the DIRBE calibration
and on the accuracy of the zodiacal light model.
<p>
More information about the IRIS dataset is available at
<a href="https://www.cita.utoronto.ca/~mamd/IRIS"> the IRIS website</a>
whence most of the preceding description came. Provenance: Original IRAS data: NASA/JPL IPAC, <br>
IRIS Reprocessing: Canadian Institute for Theoretical Astrophysics/Institut
d'Astrophysique Spatiale<br>
See the
<a href="https://www.cita.utoronto.ca/~mamd/IRIS"> IRIS website</a>.. This is a service of NASA HEASARC.
The INTEGRAL observatory (Winkler et al. 2003, A&A, 411, L1) was
launched in October 2002. The spectrograph SPI (Vedrenne et al. 2003,
A&A, 411, L63) consists of 19 Germanium detectors and is capable of
imaging in the 20 - 8000 keV band because of a coded mask. Part of the
core program of the INTEGRAL mission is a study of the Galactic Centre,
the Galactic Centre Deep Exposure (GCDE).<p>
The SPI significance map is based on the public GCDE data and
uses data in the 20 - 40 keV energy range. The analysis of the data was
done using the SPIROS software (Skinner & Connell 2003, A&A, 411, L123).
This software uses the 'Iterative Removal of Sources' technique in order
to find the most significant sources. In the output significance map the
sources found in this process are put on top of the residual map as
points with a FWHM of 1 degree.
<p>
Current data respresent the combination of all public observations as of
September 1, 2004. Provenance: INTEGRAL Science Data Center, Geneva, Switzerland. This is a service of NASA HEASARC.
The IRAS data include all data distributed as part of the IRAS Sky Survey Atlas. Data from the four IRAS bands are shown as individual surveys in SkyView. Users should be aware that IPAC does not
encourage the use of data near the ecliptic plane as they feel that contribution from local cirrus emission is significant.
<p>
The data are distributed in sets of 430 maps. Each map covers approximately 12.5x12.5 degrees, and the map centers are offset by 5 degrees so that there is a 2.5 degree overlap.
IPAC has processed to a uniform standard so that excellent mosaics of the maps can be made. Users should be cautious of data in saturated regions. Known problems in the analysis mean that data
values are unlikely to be correct. Note that IPAC has optimized the processing of these data for features of 5' or more although the resolution of the data is closer to the 1.5' pixel size.
<p>
There are occasional pixels in the IRAS maps which are given as NULL values. Unless these are explicitly trapped by user software, these data will appear as large negative values. SkyView ignores
these pixels when determining the color scale to display an image.
<p>
Essentially the entire sky is covered by the survey. However there are a few regions not surveyed and the data values in these regions are suspect. These are given to users as delivered from IPAC. Provenance: NASA IPAC/Jet Propulsion Laboratory. This is a service of NASA HEASARC.
