Here's what Adam said about the 20-degree earth avoidance angle:

From: Saul Perlmutter (saul@lbl.gov)
Date: Tue Jul 13 2004 - 09:41:25 PDT

  • Next message: Vitaliy Fadeyev: "Re: Here's what Adam said about the 20-degree earth avoidance angle:"

    Here's what Adam said about the 25-degree earth avoidance angle:

    Apparently, it was the ACS and GOODS teams that started switching to
    25-degree avoidance (from the previous default of 20 degrees). They
    found that there was no way they could separate out the high-background
    part of the orbits from the dark parts of the orbits (especially since
    orbits are sometimes stitched together to get the exposure time
    requested), and that the hit in noise with a 20-degree avoidance angle
    was dominating over the gain in exposure time with a 25-degree avoidance
    angle. So Adam said that the GOODS team and Adam's SN team always use
    the 25-degree angle now.

    This sounds like we should switch to this too. Comments?

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