Category Archives: Discussion

WISE versus IRAS

Posted on March 1, 2012 by Tom

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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How big is the universe?

Posted on December 16, 2011 by Tom

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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Features in the Gallery: Don’t look too close.

Posted on November 14, 2011 by Tom

We recently had a query about features in the image . You can see it in the Gallery. There images seems to have a very sharp but colorful transition between the bottom left and top right, but there are also … Continue reading →

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SkyView Image Gallery – over 10,000 images

Posted on April 27, 2011 by Laura

Did you know that the image displayed on the SkyView home page is a random image selected from the SkyView Image Gallery which features images created by SkyView users? If you click on the image you can see the specifics … Continue reading →

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Features in the Gallery: Image boundaries

Posted on November 5, 2009 by Tom

One of the images that had gotten temporarily concealed in our Gallery was DSS2 Red: 2nd Digitized Sky Survey (Red) Center: 12 53 36, -60 20 00 Created: 2009-10-20 02:48:39 There are a couple of weird things going on here. … Continue reading →

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RGB Image Overlays using SkyView clients

Posted on August 18, 2009 by Laura

SkyView provides two ways to generate images on local machines – the java based SkyView-in-a-Jar application and the Perl based skvbatch program. Most tasks are straight forward using either client. java -jar skyview.jar Position=m101  survey=DSS Return=jpg size=.25 Pixels=500 output=java_out skvbatch … Continue reading →

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Features in the Gallery: Saturn

Posted on July 16, 2009 by Laura

This recently submitted image looks nothing like the ringed planet Saturn we all know and love. It turns out that there is a planetary nebula named the Saturn Nebula.  SkyView displays images of objects outside our solar system so when … Continue reading →

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Features in the Gallery: Color

Posted on July 1, 2009 by Tom

There has been a whole series of beautiful color images posted to the Gallery recently. Some one (or ones) has been using SkyView‘s RGB capabilities to combine data from multiple surveys into color images. This first image of the center … Continue reading →

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Java for SkyView-in-a-Jar

Posted on May 4, 2009 by Laura

Every now and then we receive emails from SkyView users reporting problems running the SkyView-in-a-Jar application (skyview.jar) on a local machine. Most of the time the problems are due to a mismatched version of java being used to run the … Continue reading →

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Features in the Gallery: Sometimes you can do better

Posted on April 29, 2009 by Tom

The image from 2009-04-20 01:54:28 shows a typical IRAS 100 micron image: There’s a very detectable pattern of lines crossing the image from top left to bottom right. These are remnants of the scan lines used in taking the data. … Continue reading →

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