Re HST-GO-10144.06-A. Interim Performance Report (NOAO ID: ZKH001007) This report concerns the section of the proposed work in HST-GO-10144.06-A that deals with stereoscopic imaging of jet activity at comet 9P/Tempel 1 in the weeks before the Deep Impact encounter. The HST data were taken successfully and are available in calibrated form. The Deep Impact data needed for this project were taken and have recently received their final calibration and archived. A survey of the relevant Deep impact data has been done in cooperation with other members of the Deep Impact team and a description and summary of the data is now in the final stages of publication in the journal Icarus (Dust coma morphology in the Deep Impact images of Comet 9P/Tempel 1, [2006] T.L.Farnham, D.D. Wellnitz, D.L. Hampton, J.-Y. Li, J.M. Sunshine, O. Groussin, L.A. McFadden, C.J. Crockett, M.F. A’Hearn, M.J.S. Belton, P. Schultz, C.M. Lisse, submitted to Icarus). Initial software has been written (with N. Samarasinha) to solve the 3-D geometry of the cometary jets using the projected geometry of jet features as input. Before the final step of reconstructing the 3-D geometry of the main jet seen in the HST images can be done accurately, we need to understand how to interpolate in time been the HST and Deep Impact images. This requires research, currently underway, on the precise spin state of the nucleus to be completed. This expected by the end of the calendar year and is being lead by Michael Belton who is the person responsible for the HST analysis. The proposed project is expected to be completed, including a peer reviewed write up by the end of 2007.