Within the limits:
14900 < X_image < 19099 AND 10100 <
Y_image < 14299
there are:
in our catalogue: 15626 objects (file our.cat)
in the database : 15844 objects (file db.cat)
With a matching box of 1" we get:
-- 15169 objects in common. The file paired_1arcsec.ID_sep
contains
the IDs of these objects in the database and in our new
catalogue
(new SExtractor files) respectively and their separation
in
arcsecs.
** for all these objects just keep the old bvri mags and
ADD the new K band mag ADD the new J band mag ADD the new U band mag
(use info contained in the new SExtractor files:
f02k_sub_feb2003.cat , f02j_sub_apr2003.cat and f02u_sub_may2003.cat).
-- 675 objects are in the database and **NOT** in our new
catalogue.
The file indb_not_inour.ID
contains for these objects
the
list of database IDs.
For these
objects we should do as follows: leave unchanged
old
bvri mags, while:
***** for the K band mag --> if Kmag =
99 --> do not change
if Kmag = 0.0 --> set Kmag to 99
if 0.1 < Kmag < 90 --> set Kmag = Kmag -0.09
***** for the J band mag --> put them all to 99.000
***** for the U band mag --> if -99.999
leave as it is (= not in field)
otherwise put them all to 99.000
-- 457 objects are in our new catalogue and **NOT** in
the
database.
The file inour_not_indb.ID_radec
contains
for these objects the list of IDs in our new SExtractor files
(ie. in our new catalogue).
Different strategies are possible for these objects.
*** A possibility is
to consider ONLY the 59 objects that are
with
I_AB < 24.0 **OR** with K_vega < 20.5 (K_AB 22.34),
and
add them to the database (see file:
inour_not_indb.I_br_24.K_bt_20.5.ID_IKmag, containing IDs and I and K
mags for these objects).
*** Alternatively we
can add them all --> they will
have
a different ID and therefore will be easy to identify.
Their
info in all the different bands has to be
obtained
from the various Sextractor files here provided:
for the U band mags: f02u_sub_may2003.cat
for the B band mags: f02b_sub_feb2003.cat
for the V band mags: f02v_sub_feb2003.cat
for the R band mags: f02r_sub_oct2003.cat
for the I band mags: f02i_sub_feb2003.cat
for the J band mags: f02j_sub_apr2003.cat
for the K band mags: f02k_sub_feb2003.cat
For the objects
that we decide to add to the database, we should
get the
info on the objects 'quality' (flag) from the following
file: ID_FLAG.list, that for each objects in the new Sextractor
files provides
IDs and flags according the the original scheme
suggested
by Henry.
As a last info here are the images (and their
weight maps) for all the bands in the K-band sub-area:
U band: F02U.fits and F02U.weight.fits
B band: F02B.fits and F02B.weight.fits
V band: F02V.fits and F02V.weight.fits
R band: F02R.fits and F02R.weight.fits
I band: F02I.fits and F02I.weight.fits
J band: F02J.fits and F02J.weight.fits
K band:
F02K.fits and F02K.weight.fits
while
here is the chi-squared image and its weight map:
Chi-squared:
F02chi.fits
For all these images the pixel scale is 0.2 arcsecs/px.
**** A SUGGESTION ....
****
Similarly
to what was done for the other fields, here
are the limits that
I would suggest to use to avoid noisy border areas, together with
some
general info on F02. These limits imply a final K-band area of
172.28 sq. arcmins.
written 5 june 2003
update 16 October 2003 : 'double identification'
instances corrected in file paired_1arcsec.ID_sep
update 20 October 2003: J-band catalogue
replaced
update 21 October 2003: K-band catalogue now
has the correct errors for the mags (GAIN=0 in SExtractor file)
and R-band catalogue now has the
correct zero point (30.00 instead of 29.88).
update 16 May 2004: links
to U, B, V, R, I, J and K images of the K-area are provided.
The final K-band clean area is suggested.