AIPS HELP file for TTRC in 31DEC18
As of Sun Jul 22 0:29:11 2018
Type: Adverb (Real array, 7 elements)
Use: The array subscripts of the pixel at the Top Right
Corner of the desired subarray of the image. The first
value in TTRC gives the column number of the pixel; the
second value in TTRC gives the row number of the pixel.
The array contains 7 dimensions. This adverb is used
with TV verbs, but is otherwise the same as BLC.
Null value: 7*0
Null value assignment is generally (N,M,x,...), where
N and M are the dimensions of each plane of the image
and where x,... is the 3rd,... axis dimensions for
operations on full images or BLC(3),... for operations
on single planes. The latter normally applies to the