[daip] [Fwd: Re: frequency channel information in IMHEADER]

[Amy Mioduszewski]

-------- Original Message --------
Subject: Re: [daip] frequency channel information in IMHEADER
Date: Tue, 03 Oct 2006 11:42:51 -0600
From: Amy Mioduszewski <amiodusz at nrao.edu>
To: Joseph.Lazio at nrl.navy.mil,  daip at nrao.edu
References: <17698.29620.651388.148745 at exeter.nrl.navy.mil>

Hi Joe,

Well to start, the labeling on the single channels made separately
SHOULD be the lower edge.  But without details of how you made the
images I cannot be sure.

The rest of your message I am confused about (probably because I am not
a spectral line expert) but are you both trying to make a cube and
concatenate channels?

This is what EXPLAIN MCUBE says about the frequency axis:

2. The interval between planes is given by: frequency of map
        (IN2SEQ) - frequency of (INSEQ) divided by (AX2REF - AXREF).

Cheers,

Amy