Preliminary analysis of the second layer of space pointing capture cell on the long duration exposure facility

One section of the double layer capture cell of the space pointing face on the LDEF was studied with SEM/EDX. Analysis of chemical composition of residues and and ellipticity of craters on the second layer enabled them to match up with top layer penetrations which caused the secondary cratering. Morphological feature of the second layer was described. A possible direction of an impact was suggested whilst some Si particles and a mafic fragment were detected as evidences of micrometeoroid impacts. Origins of contaminations were also discussed.