Module-wide satellite selection in Gpredict

Up until now, users of Gpredict could click on a satellite in any view to make that satellite selected. For most views, selecting a satellite meant highlighting it and showing some additional info about it, or for the case of single satellite view to display the data for that satellite. In case you are not familiar with the terms module and view in Gpredict, a module is a logical object which groups a number of satellites and a ground station together, while views are the display widgets used to visualize the satellite data in different ways like map, list, polar plot, etc. A module can have any number of views laid out in a grid.

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Improved search in the Gpredict saetllite selector

Charles AA1VS has done some cool tweaking to the search functionality in the Gpredict satellite selector. Check out the video below to see how it works.

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Automatic update in the sky at a glance view

The Sky at a glance time line view in Gpredict 1.3 is updating itself as time passes. This video demo shows this feature in highly throttled simulated real time mode as well as in manual time control mode.

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Nice review of Gpredict

I stumbled upon this nice review of Gpredict Jack Wallen at ghacks.net : Track satellites with Gpredict.

It’s always good to hear what other people think about it and I was particularly happy to read that Gpredict is an incredibly simple to use tool that will allow anyone to track multiple satellites quickly and easily. This was indeed one of the primary objectives when designing the concept 🙂

In case you haven’t already seen them, check out some screenshots of the next version (1.2) to be released soon.

Satellite Tooltips

Satllite tooltip in GpredictYou may have already seen tooltips in the Gpredict user interface. I have made extensive use of them for providing short description of the functionality of the GUI controls all over the application. Lately, I have felt a desire to extend the usage of tooltips to also include graphical objects like satellites shown on the map or the passes shown in the “Sky at a glance” module.

Gpredict uses GooCanvas for graphics, which adds a the “missing” 2D canvas library to Gtk+. Since version 0.15 GooCanvas includes support for Gtk+-like tooltips for any objects on the canvas. This is really great since it simplifies the effort from messing with own popup windows to using single line API calls.

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UNITEC-1 Tracking Report

I’m sorry to report that despite coordinated efforts between Japanese and European teams we have not been able to receive any signal from UNITEC-1 over Europe. Japanese ground stations were able to receive both the orbit determination downlink and the major/minor data downlink during the first pass after launch; however, the signal has been lost during the first mission day sometime between LOS over Japan and AOS over Europe.

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