Author Archives: Tom

SkyView updates

We are releasing a new version of SkyView today (2012-06-25). We’ve a separate article on the new INTEGRAL Galactic Plane surveys, but we’ve made some changes that affect many of the survey datasets. For each survey that we support, SkyView … Continue reading

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SkyView using Xamin

Recently the HEASARC released a new more powerful interface to its catalog and archive, Xamin. We have just updated SkyView so that SkyView catalog queries of tables in the HEASARC databases are now being made through this new Xamin interface … Continue reading

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New Fermi Surveys

We’re pleased to be able to provide a new set of Fermi surveys. Fermi is the highest energy survey in SkyView and heretofore we had been providing two bands of Fermi data, from 100 to 5450 MHz and 5450 MHz … Continue reading

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WISE All-Sky Data Available in SkyView

SkyView is now serving the data from the WISE All-Sky Data release. The main difference with the preliminary release is coverage on the ~40% of the sky that was missing in the earlier release. However the entire dataset has been … Continue reading

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SkyView Surveys Summary: I

Recently we’ve been updating and systematizing some of the metadata we have on SkyView surveys, trying to make sure that we have consistent, quantitative description of each one. Some of the key metadata are the resolution of the survey on … Continue reading

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What are people interested in? (2)

A few years ago we posted an image of the sky which showed what people have been looking at. Here’s an update giving the distribution of pixel centers for the last 10,000,000 or so SkyView images (about the last 18 … Continue reading

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WISE versus IRAS

Just to see the incredible improvement WISE makes over the IRAS data here are two images of the same region (0.2×0.2 degrees at RA=2h 40m, Dec=20). The IRAS image (from the IRIS 12 micron survey) is very pixelated… There’s almost … Continue reading

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SkyView links to WISE Preliminary Release Data

Data from the Wide-field Infrared Survey Explorer (WISE) Preliminary Release are now available in SkyView. WISE has made 4 all-sky surveys at 3.4, 4.6, 12 and 22 microns. The WISE surveys provide a remarkable picture of the sky in the … Continue reading

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How big is the universe?

Sometimes we can get a sense of the immensity of the universe from mundane things. The odometer on my 10 year old car is approaching 186,000 miles. That’s about as far as light goes in a single second. It takes … Continue reading

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