NavList:

From: douglas.denny---com
> The question is: why is the current on-line US Almanac Office giving
> the same results as ICE which has an incorrect delta T? It would
> appear they are using ICE as the basic core programme still, (produced
> before 1988).
> Any further comments will be appreciated.

I use ICE occasionally and I am also slightly discouraged by the mismatch in
delta T and would like to find some solution to this issue.

I think it would be possible to file a FOIA request to the USNO for ICE
source code. Then it could be fixed (or used to determine format of
EPH??.DAT ephemeris files, in case delta T is stored there).

Has anybody here done FOIA requests before and can share what is
involved?

nsg

----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------