SDO, (Solar Dynamics Observatory) |
SDO, (Solar Dynamics Observatory) |
Guest_PhilCo126_* |
Feb 4 2010, 11:02 AM
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Guests |
So it's fingers crossed for the Solar Dynamics Observatory, destined to help the predictions of "space weather".
SDO promises to become an exciting mission as an orbiting solar observatory with multiple high-definition telescopes has never been attempted before… The prelaunch readiness press conference will be held at 1 p.m. EST, on Monday, 8th February 2010 from the Kennedy Space Center News Center. It will be immediately followed by the SDO science briefing, both briefings will be broadcast live on NASA Television. Launch is set for 9th February 2010 (10:30 – 11:30 a.m. EST). |
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Mar 17 2010, 09:46 PM
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#2
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Junior Member Group: Members Posts: 89 Joined: 27-August 05 From: Eccentric Mars orbit Member No.: 477 |
For part the way up, one channel of the EVE instrument was on. All the doors and filters were closed, though which means that its measurement was uncorrupted by light.
Every time the spacecraft went through perigee, the signal on that channel spiked by a factor of 10. The first perigee was less than 1 hour after we turned the EVE electronics on. It was kind of scary watching it the first time, wondering if it would ever turn around. We recognized almost immediately that we were seeing the protons of the inner Van Allen belt. Our instrument is relatively well shielded against the electrons of the outer belt, but we could (just barely) see that belt also. Now EVE is an ultraviolet instrument, not a radiation instrument, and is not calibrated to do an actual radiation measurement. We can't say that a particular measurement represents so many particle hits per second, particle energy, particle type, or really anything other than we got higher counts here than there. But it does make an interesting map. http://www.youtube.com/watch?v=vA4Y4kSzGNE |
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