II. User's Guide to the 2MASS All-Sky Data Release
6. Ancillary Files
h. All-Sky DVD Release Updates
- 2006 May 26
The point source catalog of the 2MASS all-sky DVD release does not conform
exactly with the specified ordering of the rows (0.1 degree wide declination
bands each in order of right ascension starting at the south pole). Rows
are occasionally misplaced from their correct order by being displaced to
a later position in the catalog. The maximum displacement error is 8543 rows.
The most likely row displacement is 25 rows. The average unsigned displacement
of the rows in relation to the correct ordering is 1.06 rows. As no rows are
displaced northward across declination 0, the division between northern and
southern hemisphere sources is correct.
The ordering into 0.1 degree wide declination bands is violated by
approximately 1641 rows, each of which is displaced into the next larger 0.1
degree wide declination band.
The ordering by right ascension of each declination band is violated by
approximately 1,535,880 rows, each of which is displaced to a position of
larger right ascension or in a few cases as indicated above, into the next
Users who rely on exact conformity with the specification should re-sort
the point source catalog. We wish to thank Henry Throop for making us aware
of this error.
- 2003 Jun 30
Sun computers running Solaris 8 and earlier versions may not be able
to read the last files on some of the disk sides, because of a system driver
limit of 4 GB. Solaris 8 systems with a Patch level 109764-04 and later
can read past the 4 GB limit and successfully read the last file on the disks.
However, systems running Solaris versions earlier than 8, even with the matching
Patch 105486-07, fail to read the last files on disk sides containing more than
4 GB. One can list the Patches present in Solaris with the command:
% showrev -p .
- 2003 Jun 27
- DVD-ROMs are being shipped out to those who have ordered them.
Please report any problems encountered with the DVD-ROM to
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