Subject: Pointing positions, Crab rev 170

  Hi,

  the attached plot with pointing positions within 2 deg 
of the Crab in revolution 170 might be useful for some of
you. I'll look into the stability of spectral results
as function of source position and over the next few days,
time permitting. 

  Cheers,
  Peter

P.S. Did anything come out of my effort with detector
     spectra yet?