- SETI@home graphics. SETI@home graphics show information about the data analysis and about your account and team. Graphics can be shown in two ways: In a window: Using the BOINC Work Manager, you can open SETI@home graphics in a window: go to the Work tab, select an active SETI@home result, and click Show Graphics. You can interact with the.
- SETI@Home Click the Download Free Trial button above and get a 14-day, fully-functional trial of CrossOver. After you've downloaded CrossOver check out our YouTube tutorial video to the left, or visit the CrossOver Chrome OS walkthrough for specific steps.
System requirements. There is an initial download of about 10 MB. You'll need about 20 MB of free disk space and 64 MB of RAM. With a typical computer (such as a 2 GHz Pentium 4), you'll need to let SETI@home run for at least 2 hours per week (slower computers are fine but they'll have to run proportionally more).
Ursid shower outburst,
Ursid MAC mission (proposed).
December-January:
A chrismas comet(h)!
Parent comet 8P/Tuttle
visible in evening sky,
+5.7 magnitude in Pisces.
Report your observations:
Report your observations of 8P/Tuttle to: pjenniskens [at] seti.org.
Information for media:
Media inquiries should be directed at the NASA Ames Public Affairs Office: rachel.l.prucey [at] nasa.gov.
Ursids at a glance
When:Date: 2007 December 22
Peak time: peak at about 20 - 22.2 h UT (= 12 h a.m. - 2.2 h p.m. Pacific Standard Time).
Width: 5 - 8.5 hours above half the peak rate
What:
Peak rate: ZHR perhaps 40 - 70 per hour
Meteor brightness: mostly faint meteors?
Shower radiant: constellation Ursa Minor (Radiant at RA = 218.3, Decl. = +75.5)
Entry speed: Vinf = 35 km/s; Vg = 33.52 km/s
Where:
Visible from: N. Europe, N. Asia, Arctic
[see flux applet for visibility from your location]
Moon:
98 percent illuminated, in Taurus, high in the sky
Best viewing direction:
Best viewing: Keep Moon out of field of view (best to block behind obstruction such as telephone pole, then watch whole sky), avoid city haze that scatters moonlight
Best direction: North
Best time: Early evening and early morning when the Moon is low in the sky
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Important because:
Hard to see meteor shower outburst that only occurs when the parent comet 8P/Tuttle returns (due January 2008). Old dust that holds clues to how cometary dust weathers the space environment.
Public interest:
The Ursid shower is very hard to observe from the ground, but can be detected with intensified cameras and low-light-level cameras that adjust to the bright Moon background light.
A more direct way to participate in the mission is by observing the parent comet 8P/Tuttle with your telescope and CCD camera when it makes its favorable return in December of 2007 and January of 2008. More information.
More information:
General tips on observing meteor showers from the American Meteor Society and the International Meteor Organization.
Photo credit:
Banner photo shows Earth from the perspective of the approaching Ursid meteoroids, and the orbit of 8P/Tuttle as shown by the Orbit Viewer applet orignially written by Osama Ajiki (AstroArts) and modified by Ron Baalke (JPL).
SETI@home graphics
SETI@home graphics show informationabout the data analysis and about your account and team.Graphics can be shown in two ways:
- In a window:Using the BOINC Work Manager,you can open SETI@home graphics in a window:go to the Work tab, select an active SETI@home result, and click Show Graphics.You can interact with the graphics:to rotate,hold down the left mouse button and move the mouse;to zoom, hold down the right mouse button and move the mouse(On Macintosh, hold down the Control key and the mouse button to zoom).
- Screensaver:if you choose BOINC as your screensaver,SETI@home graphics will be shown when your computer is idle.Using the Settings button in Display Properties,you can tell BOINC to turn off graphics after a given time.In this mode, any mouse or keyboard activity exits the screensaver.
On most computers, SETI@home's graphics use thegraphics coprocessor (such as NVIDIA or ATI),and don't significantly slow down computation.
Customizing SETI@home graphics
SETI@home lets you control the graphics in various ways.The procedure for modifying graphics is:
- In your web browser,go to the 'Your Account' page on the SETI@home web site.
- Click on 'View or edit SETI@home preferences'.
- Click on 'Edit SETI@home preferences'.
- The form should look likethis.Fill out the form (explained below) and click 'Update preferences'(note: the form also lets you control other items,such as resource share).
- Open a SETI@home graphics window (see above).
- In the BOINC work manager, go to the Projects tab,select or right-click SETI@home, and click 'Update'.
- In a few seconds, the graphics will change toreflect your new preferences.
We'll now go through the various settings.The first one is Graphics preferences,a popup menu whose choices are Classic, Panels, Minalist and Custom.This controls the layout of the graphics:
Tahitian Sunset
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Water World
Choose your own background
You can specify a JPEG image to be shown in the background of the graphics.It must be online (i.e. it must have a URL).Paste the image URL into the preferences form.Here's an example:
Choose your own logo
You can also specify an image to be displayed as alogo in the lower right corner.Same rules as for the background.Here's an example, with the logo ofThe Knights Who Say Ni!
Advanced customization
But that's just the beginning!If you set your graphics preferences to Customand then edit your preferences again,you'll get a new range of choices:
- Text style: determines how text is displayed
- Pillars: 3D with cylindrical dividers
- Heads-up: 2D
- Panels: 3D on rotating panels
- Graph style: determines how the 3D graph is drawn
- Rectangles: vertical rectangles with small gaps
- Surface: continuous polygonal surface
- Wireframe: lines
- Planes: vertical planes
- Maximum frames per second
- Maximum CPU% for graphics (the frame rate will be reduced as needed to obey this).
- Graph grow time (the number of seconds it takes the 3D graph to grow from back to front)
- Graph hold time (the number of seconds the 3D graph remains at full size)
- Transparency of surfaces
- Horizontal oscillation period (how long it takes for the 3D graph to swivel back and forth. Set this to zero to turn off swivel.)
- Horizontal oscillation range (the angular range of the swivel).
- Vertical oscillation period (same, vertical swivel).
- Vertical oscillation range
- Number of stars (controls the starfield)
- Speed of stars (can be positive or negative... experiment!)
Advanced customization of color
To fine-tune your color scheme,set your Color preference to Custom,then edit your preferences again.
First, a quick explanation about color.'Hue' is number, ranging from zero to one, that determines color;0.0 is red, 0.2 is yellow, 0.4 is green, 0.6 is blue, 0.8 is violet,then it wraps around to 1.0, which is the same red as 0.0.
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You can set the following:
- Start hue in graph:This is the hue of the left edge of the graph.
- Hue change in graph:This is the change in hue as you go from theleft to right edges of the graph.It may be positive or negative.It can even be greater than one or less than minus one(this gives a multi-rainbow effect).
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SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.