Shads & Verts
• Rev 0 to 13: 21 observ.• 98 h• B’~ -24.5° to -20.5°• Large phase coverage• A, B and C rings
Pointing problems in Rev. A
• Pointing problems: 15.3, 17.3, 20.9 mrad (3) ~ 4-5 FOVs• rings are ~ 40 mrad wide at ansa• May do radial scans instead
A ring coverage
A ring 0 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 270 285 300 315 330 345M0
M30M60M90M120M150M180D0D30D60D90D120D150D180
Lit FaceUnlit faceShadow
Longitude
Phase angle (M=morning, D=Dusk)
• Shadow egress and morning ansa OK (lit) at : spin and thermal inertia • Miss ingress of shadow• Unlit face: Min T on unlit face, shadow detected ? Vertical structure, dynamics
B ring coverageB ring 0 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 270 285 300 315 330 345M0
M30M60
M90M120
M150M180D0D30D60D90D120D150D180
Lit FaceUnlit faceShadow
Phase angle (M=morning, D=Dusk)
• Shadow egress and morning ansa OK (lit) at : spin and thermal inertia • Unlit face: Min T on unlit face, shadow detected ? Vertical structure, dynamics
C ring coverageC ring 0 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 270 285 300 315 330 345M0
M30M60M90M120M150M180D0D30D60D90D120D150D180
Lit FaceUnlit faceShadow
Phase angle (M=morning, D=Dusk)
• Shadow egress and morning ansa OK (lit) at many unlit face:
thermal inertia, spin better constrained
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