This page (revision-7) was last changed on 07-Dec-2016 14:14 by PeterYoung

This page was created on 19-Mar-2010 16:02 by PeterYoung

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BadExposureExample
BadExposureExample

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At line 50 changed one line
[{Image src = 'weird_exp26.png' width='400'}]
[{Image src = 'weird_exp26.png' width='700'}]
The left image is from the O V 248.95 window, the right from the O IV 279.80 window. The symmetry of the two spectra is striking. It's also noticeable that the two wavelength windows bracket 9 windows on the LW detector where all 6 exposures are dark. The two LW windows outside of these 'brackets' do not have all 6 exposures missing.
The spectra in the two weird windows have high values for about 75% of the window but then drop to zero. It is not clear if the bright pixels actually contain good data points as the lines in the windows are weak, however I believe they do not contain good data. Note that the magnitude of the spectrum in the two windows is different by a factor of about 2.3. This is close to the difference in effective areas between the two wavelengths (factor of 2.2, with 279.80 being more sensitive).
This page (revision-7) was last changed on 07-Dec-2016 14:14 by PeterYoungTop