[fitsbits] Re: EXPOSURE or OBSTIME?

[Tom Kuiper]

I believe that reading the definitions closely I have discovered a
distinction.  SDFITS defines EXPOSURE as the effective integration, so
that the radiometer equation has a factor of unity.  It seems to me that
OBSTIME is defined as total integration time.  In the case of position
or beam switching, for example, EXPOSURE = OBSTIME/4.

Does this seems right?

Tom
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