Author Archives: Tom

Error accessing GRANT-SIGMA survey

A typo in the survey description had disabled the GRANT/SIGMA survey. This is now fixed. I apologize for the error.

Posted in Notices | Tagged , , | Leave a comment

SkyView access to UKIDSS survey data

SkyView users may now generate images using the public UKIRT Infrared Deep Sky Survey (UKIDSS) data. While UKIDSS data is available in only a fraction (14%) of the sky, it goes much deeper and has higher resolution than the 2MASS … Continue reading

Posted in Announce | Tagged , , , , | 2 Comments

SkyView support for ZPN projection

As part of integrating UKIDSS data into SkyView, we have added support for the Zenithal Polynomial, ZPN, projection. In this projection the angular distance between a point on the sky and the reference position is transformed to a distance from … Continue reading

Posted in Discussion, releases | Tagged , , , | Leave a comment

WMAP data accessible using SkyView Jar

We’ve made a small change to the way the WMAP data is described to allow it to be accessible either through the standard Web interface or to remote users using our SkyView Jar. Access isn’t quite the same as for … Continue reading

Posted in Discussion | Tagged , , , | Leave a comment

SkyView includes WMAP Nine Year Data

We have updated SkyView to use the new nine year maps for WMAP. These represent the full mission dataset for the Wilkinson Microwave Anisotropy Probe. The structure is unchanged from the earlier 7 year data. We provide a total of … Continue reading

Posted in Announce | Tagged , | Leave a comment

UKIDSS surveys to be added to SkyView

Early in January 2013 we shall be adding access to the UKIRT Deep Infrared Sky Surveys (UKIDSS). Their web site describes these surveys as the successor to 2MASS. Ultimately they will cover about 7,000 square degrees, or a bit more … Continue reading

Posted in Notices | Tagged , | Leave a comment

SDSS update

The FITS headers generated by the SDSS surveys will now reflect that these are using DR9 data rather than DR8 results. The SDSS site switched to using DR9 a couple of weeks ago. We’re told the primary difference is improved … Continue reading

Posted in Notices | Leave a comment

SDSS DR9 release

It appears that the SDSS servers have begun serving SDSS DR9 data. SkyView accesses the SDSS through the Virtual Observatory Simple Image Access protocol (SIAP). In this protocol a user first requests a list of the images available in a … Continue reading

Posted in Notices | Tagged , , , | Leave a comment

WISE and SDSS problems

Recently we’ve had some problems with access to the WISE and SDSS surveys (but not the SDSS DR7). We access these remotely using a standard protocol where we first find a list of the images in the region of interest … Continue reading

Posted in Notices | Tagged , , | Leave a comment

VLSS Redux available through SkyView

The VLSS sky survey has been updated to use data from the VLSS redux analysis described in Lane et al 2012. There is a slight increase in sky coverage and resolution and a substantial improvement in the noise due to … Continue reading

Posted in Announce | Leave a comment