Tag Archives: GALEX

SkyView v3.1.8 with GALEX DR7 released.

A new version of SkyView, v3.1.8, has been installed as the default version. The significant change from the user perspective is that the GALEX DR7 is included. New data is mostly in the NUV. To access these data through SkyView-in-a-Jar … Continue reading

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GALEX DR7 in SkyView

We’re testing out a new version of SkyView where we’ve upgraded the GALEX survey to include more GR7 data. There are a few minor internal changes. Most of the new data is for the NUV. When we release this survey … Continue reading

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SkyView V3.1.4: GALEX update, Memory fix

A user (thanks Steve U!) brought to our attention a problem with the GALEX survey in SkyView. SkyView uses the GALEX archive at MAST and only retrieves files when a user first requests data in a region. We keep files … Continue reading

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SkyView updates GALEX survey

Galaxy Evolution Explorer (GALEX) surveys have been updated to use the GALEX GR6 release. As mentioned in a previous post GR6 improvements include more sky coverage and a bit better calibration. Image generation for GALEX may be slow for a … Continue reading

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New Fermi and GALEX surveys soon in SkyView

Over the next week or two we’ll be releasing a new and an updated survey set. The Fermi all-sky data will give us a major new image of the gamma-ray sky. Fermi has higher sensitivity and resolution than the EGRET … Continue reading

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Features in the Gallery: Space Frisbees?

This image from 2009-04-27 22:10:22 seems to show a lot of disks in the sky. What’s going on here? The image is taken from the ROSAT pointed observations. The ROSAT mission comprised two phases. In an initial phase the satellite … Continue reading

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SkyView GALEX GR4: Off center images fixed.

A new version of SkyView has been installed to accommodate the issues that off center GALEX GR4 images presented. GALEX now uses a special GalexExposure Image finder. This uses knowledge of the GALEX survey to find the center of the … Continue reading

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Unexpected image offsets in the GALEX GR4

The underlying GALEX observations used in SkyView are 3840×3840 pixel images where only¬† a circle with a radius of about 2900 pixels is actually exposed.¬† In earlier releases the exposed region seemed to be centered with the image square but … Continue reading

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Full GALEX GR4 Available in SkyView

The operational version of SkyView now supports the full GALEX GR4 release. This includes a total of about 170,000 UV images of the sky. Total coverage is about 25,000 square degrees or well over half the sky. As discussed in … Continue reading

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Duplicate EPOCHs in GALEX data

If you’ve tried the new GALEX survey from the command line, you may have noticed some messages Warning: Multiple occurrences of key: EPOCH popping up. Many of the GALEX FITS files have two EPOCH keywords in their headers. Fortunately they … Continue reading

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