CIRS-RINGS Shads and Verts An I C. Ferrari Sap/DAPNIA/CEA & University Paris 7

Shads & Verts Rev 0 to 13: 21 observ. 98 h B’~ -24.5° to -20.5° Large phase coverage A, B and C rings

First shadows…2004,July 2 nd

Cont’d…

Rev. A: 2004, Oct 28 th

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

Thermal maps CIRS_007RB_LMP001_PRIME (11.5h) CIRS_009RA_LMP001_PRIME (7h)

A ring

A ring coverage 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

B ring coverage 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

C ring coverage Phase angle (M=morning, D=Dusk) Shadow egress and morning ansa OK (lit) at many   unlit face  : thermal inertia, spin better constrained

Redesign with CIRSCAN Developping ring analysis software Data base: –Obsname in DB –Nav kernels in DB used for the pointing