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| In preparation for beam studies on Mars, we wanted to estimate the impact of Mars diameter (8 arcsec these days) on the determination of NIKA's FWHM. | Create on page per subject, but keep all update and new entry for the same subject in the same page otherwise discussions are too difficult to follow (e.g. below: subject Gaussian beam and Disk Planet, has 3 entries). |
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| We convolve a true gaussian by a disk and obtain an effective beam that is no longer gaussian. A gaussian can however be fit (with moderate accuracy) around the peak. Restricting to the region where the effective beam is larger than 0.7 times the maximum, we obtain the following distortion pattern | - [[PlanetConvol |Gaussian beam and Disk Planet: May 29, 2012, NP; May 31, 2012, RZ; June 1st, 2012, NP]] |
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| {{attachment:fwhm_planet.png ||width=400}} | - [[ZemaxSimul2012 |Zemax simulations: FOV geometry simulated with grid distortion, effect of focus on PSF: June 04, 2012, SL]] - [[attachment:NikaRun4/RZearlyResults.pdf|RZ early results]] |
Offline Processing Results
Create on page per subject, but keep all update and new entry for the same subject in the same page otherwise discussions are too difficult to follow (e.g. below: subject Gaussian beam and Disk Planet, has 3 entries).
- Gaussian beam and Disk Planet: May 29, 2012, NP; May 31, 2012, RZ; June 1st, 2012, NP