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← Revision 17 as of 2013-06-17 16:44:24 ⇥
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| Deletions are marked like this. | Additions are marked like this. |
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| == Maps of Saturn at 1.25mm and 2.05 == .The contours shown are at fractions of the maximum of the map of 1/10, 1/100, 1/1000 and 1/10000 .The arms of the secondary miror can be seen as a cross |
.'''''Warning:''''' .Saturn is extended (about 20 arcsec) so we expect the main beam to be very large. .Saturn is so bright that it saturates at the center. == Using a decorrelation of the noise == === Maps of Saturn at 1.25mm and 2.05mm === .The contours shown correspond to 1/10, 1/100, 1/1000 and 1/10000 of the maximum of the map (which is not well calibrated) |
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=== Beam profiles at 1.25mm and 2.05mm === .The yellow dots are data points that are negative but for this log plot, we show their absolute value |
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| === Far side lobe at 1.25mm and 2.05mm === .The cross correpond to the arms of the secondary miror of the telescope. |
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| || [[attachment:1mm_satmap.pdf]] || [[attachment:2mm_satmap.pdf]] || | || [[attachment:1mm_satmap.pdf]] || [[attachment:2mm_satmap.pdf]] || === Using a logarithmic scale === || {{attachment:1mm_log.png}} || {{attachment:2mm_log.png}} || || [[attachment:1mm_log.pdf]] || [[attachment:2mm_log.pdf]] || == With no decorrelation at all (only projection) == .The map and the profile show no sign of plateau at 1mm. At 2mm, we have a weak extension (less than 1%) that might be due to a plateau, but which is not significant. || {{attachment:1mm_nodec.png}} || {{attachment:2mm_nodec.png}} || || [[attachment:1mm_nodec.pdf]] || [[attachment:2mm_nodec.pdf]] || || {{attachment:1mm_nodec_pro.png}} || {{attachment:2mm_nodec_pro.png}} || || [[attachment:1mm_nodec_pro.pdf]] || [[attachment:2mm_nodec_pro.pdf]] || |
Beam study using Saturn observation
Warning:
- Saturn is extended (about 20 arcsec) so we expect the main beam to be very large.
- Saturn is so bright that it saturates at the center.
Using a decorrelation of the noise
Maps of Saturn at 1.25mm and 2.05mm
- The contours shown correspond to 1/10, 1/100, 1/1000 and 1/10000 of the maximum of the map (which is not well calibrated)
Beam profiles at 1.25mm and 2.05mm
- The yellow dots are data points that are negative but for this log plot, we show their absolute value
Far side lobe at 1.25mm and 2.05mm
- The cross correpond to the arms of the secondary miror of the telescope.
Using a logarithmic scale
With no decorrelation at all (only projection)
- The map and the profile show no sign of plateau at 1mm. At 2mm, we have a weak extension (less than 1%) that might be due to a plateau, but which is not significant.
