Author Archives: Tom

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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Looking for Moving Targets? Try SkyMorph

One of the restrictions on SkyView is that you need to specify a fixed position in the sky to look at. For many years the SkyView machine has hosted a companion service, SkyMorph, that allows you to look for many … Continue reading

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SkyView and SkyMorph Problems 8/24/2014

SkyView‘s disk area for user-generated images filled up on the morning of August 24 (EDT) and the problem was not corrected until about 9 AM on August 25. SkyView and SkyMorph requests during that time failed. We apologize for any … Continue reading

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Babylon’s Legacy: Converting Decimal to Sexagesimal

It’s usually convenient to store and process angles and times in some simple decimal value, but we often wish to display them in a conventional sexagesimal notation or allow users to enter values that way. So we need to be … Continue reading

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V3.1.7: SkyView and Google Analytics

Today we will be releasing version 3.1.7 of SkyView. There are no changes to the user code, but the primary pages will now be instrumented so that usage will be tracked through Google Analytics. This implements the NASA general policy … Continue reading

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V3.1.6: RGB Images Bug Fix

The survey descriptions for a number of our surveys (notably including some of the DSS surveys and the IRAS and IRIS surveys) had an error in them that made it impossible to create RGB images if one of the affected … Continue reading

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SkyView 3.1.5: Update to ImageJ library

SkyView uses the ImageJ software library to generate all of the quicklook (JPEG, GIF, TIFF, PNG, …) images it uses. ImageJ is a very powerful public domain package for analyzing and manipulating images. A full implementation of ImageJ is included … 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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Release 3.1.3: SkyView, DS9, Aladin and SAMP

For some while we’ve supported the Virtual Observatory Simple Application Messaging Protocol (SAMP) for SkyView when you are using the jar file. The idea is that you can run a command like: java -jar skyview.jar position=3c273 survey=dss samp=true and any … Continue reading

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V3.1.2 released. Fixes to Mellinger survey

Version 3.1.2 of SkyView has been released. Three bugs all related to the Mellinger optical surveys have been fixed in this latest release. All relate to use of the the Mellinger data. The errors were present only in images of … Continue reading

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