Microwave data from the WMAP (Wilkinson Microwave Anisotropy Probe) mission are now available in SkyView. WMAP is the first fine-resolution (0.2 degree) all-sky map of Cosmic Microwave Background (CMB) radiation. For more information see our Survey Information page and the WMAP archive site.
Posts Tagged ‘surveys’
New SkyView Survey: WMAP
Wednesday, May 13th, 2009GALEX survey available!
Thursday, May 8th, 2008SkyView now includes data from GALEX. This is a major new survey for us. GALEX provides high resolution images in the ultraviolet for about a quarter of the sky. This fills a substantial hole in the resolution/regime coverage for SkyView. The GALEX data are accessed through the Web from MAST. Currently the fourth release of GALEX data (GR4) is being ingested and we will update the survey description to include new data as it becomes available.
By default GALEX uses a different image finder than other surveys. When it needs to choose which input image to sample for a given output pixel, it looks only at images whose center is under some maximum radius from the position of the output pixel and then chooses the one of those with the longest exposure time. The maximum radius is currently set to 0.58 degrees. These settings can be overridden if you use the SkyView-in-a-Jar locally, but are fixed for the Web interface.
A three color image of M81 with Red=DSS2R, Green=GALEX Near, Blue=GALEX Far
New RASS Diffuse Emission maps
Tuesday, April 29th, 2008A new survey including seven bands of data from the ROSAT All Sky Survey data has been added to SkyView. The RASS Background 1-7 data show the entire sky in diffuse X-ray emission. Point sources have been subtracted out. This new survey replaces the RASS 1/4, RASS 3/4 and RASS 1.5 KeV maps. Those data are still available but we no longer display the survey names on the Web page. You can still access them through the batch interfaces or using the Jar file. The new data sets have better spatial and energy resolution and were built by the Steve Snowden who also created the earlier maps.