... The output timeseries has 4 columns (background subtracted source rate & error, background rate & error). ... Background corrections are not applied Input background rates table is empty ( warning ) corrective action : Background corrections are not applied Source and background rates les from di erent exposures ( warning ) corrective action : Background corrections are not applied (please, check the ODF les ) Background rates and region les have di erent EXP IDs ( ...

... HST . COS ETC Warnings for Cycle 18 . ... HST Overview . ... Version 18 of the ETC, which was installed in the Fall of 2009, contained a bug in the web forms for COS imaging ETC that affected calculations performed using a point source with a size other than the default. ... GOs preparing Cycle 18 phase I should do ETC calculations with G140L/1250, but use G140L/1280 in their APT phase I. Cycle 17 users should NOT change and re-submit their phase IIs in relation to this change in cenwave name. ...

Disastrous earthquakes happen 100 to 200 times a year. ... There is a chance that the data of ionospheric plasma observations hold an answer to the latter question. Satellites and ground-based facilities may detect earthquake precursors in the ionosphere a few hours or days before the main shock. ... ULF "Hz"-oscillations have been recorded several hours before the main shock in a narrow magnetic field tube (40...100 km along the satellite trajectory) conjugated with epicenter of the earthquake. ...

... One possible application of a solar sail is a spacecraft to warn Earth of approaching interplanetary disturbances and shocks. ... Spacecraft that can provide such a warning are currently stationed at (or near) the Lagrangian L1 point , between the Earth and the Sun--at about 4 times the distance of the moon and 1/100 times that of the Sun. ... Because of the greater distance from Earth, the Earth's pull there is weaker, not enough to make the spacecraft match the Earth's motion around the Sun. ...

One possible application of a solar sail is a spacecraft to warn Earth of approaching interplanetary disturbances and shocks. ... Spacecraft that can provide such a warning are currently stationed at (or near) the Lagrangian L1 point , between the Earth and the Sun--at about 4 times the distance of the moon and 1/100 times that of the Sun. ... Because of the greater distance from Earth, the Earth's pull there is weaker, not enough to make the spacecraft match the Earth's motion around the Sun. ...

Introducing BLoCXS and Using it to Estimate Calibration Uncertainties Hyunsook Lee Warnings Flow Charts Calibration Beyond ARF Introducing BLoCXS and Using it to Estimate Calibration Uncertainties Hyunsook Lee CfA April 10, 2007 Introducing BLoCXS and Using it to Estimate Calibration Uncertainties Hyunsook Lee Warnings Flow Charts Calibration Beyond ARF Acknowledgement and Warnings · Vinay Kashyap and BLoCXS developers! ... Prior to this, thorough understanding BLoCXS is a must. ...

. This section warns you against using the command in a way that might cause you problems.