Hi,
While using your PSWF code for the Slow Transients Pipeline, I observed that the first element of the 1D gridding correction function (at position nu=-1) is different than the expected:

In this image it is about 0.0212, but I would expect a smaller value than next one of 0.007, as it tends to decrease for smaller indexes.
Apparently this can be fixed by changing the following lines of grdsf function:

    part[(nu > 0.75) & (nu < 1.0)] = 1
    nuend[(nu > 0.75) & (nu < 1.0)] = 1.0

to:

    part[(nu > 0.75) & (nu <= 1.0)] = 1
    nuend[(nu > 0.75) & (nu <= 1.0)] = 1.0

Do you agree this is an issue?
Thanks.