1. UVIS Data Analysis and Modeling: Saturn FUV images*
07/16/96
UVIS Data Analysis and Modeling: Saturn FUV images
R. West and D. Tice
With help from many team members *

2. Nine EUVFUV sets Row -> Integration number ->*
07/16/96
Nine EUVFUV sets
Row ->
Integration number ->
Residual vertical striping is apparent *

3. Data Reduction Cube Generator (includes flat field)*
07/16/96
Data Reduction
Cube Generator (includes flat field)
Image geometry is a product
Divide by a solar spectrum from Amanda Hendrix and processed by D. Shemansky’s simulator software, then factor in `99 calibration and red patch to get I/F
Subtract a background from off-planet pixels
Extract data in a latitude band and fit to Minneart function to improve signal/noise *

4. Selection of Pixels in a Latitude Band
Deg.

5. *
07/16/96
Minneart Fit *

6. Model Å
Multiple Scattering radiative transfer, including polarization
Rayleigh scattering by molecular H2 and He
Absorption and scattering by aerosols
Absorption by (mainly) C2H2, PH3, other hydrocarbons
Gas profiles from Moses et al. (2000) and Prange et al

7. Relevant Absorbers (from Prangé et al., 2005)

8. Profiles from Moses et al., 2000

9. First Results – Acetylene
Center Limb
Model 00A

10. Improved Model
Center Limb
Model 05 (p’ = 0.5*P; A’ = 0.5*A)

11. Immediate Needs Settle flat-field and calibration issues
B. McClintock, Lead
Improved instrument simulator
D. Shemansky
Standard Fortran, update calibration
Image deconvolution(?)
Inclusion of Raman scattering in the model(?)

12. References
Moses, J. et al., ‘Photochemistry of Saturn’s Atmosphere I. Hydrocarbon Chemistry and Comparisons with ISO Observations’, Icarus 143, 244–298 (2000)
Prangé, R. et al., ‘Latitudinal variation of Saturn photochemistry deduced from spatially-resolved ultraviolet spectra’, Icarus 180, (2005).