README file - 60-A.9284(K)

Preibisch - email of 19.12.2007


Here is the information for the upcoming HAWK-I SV observations
of the Carina Nebula.

The central coordinates of the 24 mosaic fields are as follows:

mosaic field  RA       DEC (J2000)
number:

field  1:   10:45:03.0,-59:23:04.0
field  2:   10:44:06.0,-59:23:04.0
field  3:   10:45:03.0,-59:30:14.0
field  4:   10:44:06.0,-59:30:14.0
field  5:   10:43:09.0,-59:30:14.0
field  6:   10:46:00.0,-59:37:24.0
field  7:   10:45:03.0,-59:37:24.0
field  8:   10:44:06.0,-59:37:24.0
field  9:   10:43:09.0,-59:37:24.0
field 10:   10:46:57.0,-59:44:34.0
field 11:   10:46:00.0,-59:44:34.0
field 12:   10:45:03.0,-59:44:34.0
field 13:   10:44:06.0,-59:44:34.0
field 14:   10:47:54.0,-59:51:44.0
field 15:   10:46:57.0,-59:51:44.0
field 16:   10:46:00.0,-59:51:44.0
field 17:   10:45:03.0,-59:51:44.0
field 18:   10:47:54.0,-59:58:54.0
field 19:   10:46:57.0,-59:58:54.0
field 20:   10:46:00.0,-59:58:54.0
field 21:   10:45:03.0,-59:58:54.0
field 22:   10:46:57.0,-60:06:04.0
field 23:   10:46:00.0,-60:06:04.0
field 24:   10:45:03.0,-60:06:04.0


The field number gives the priority, i.e. start with field 1.

For each field, we
want to use a 5-point dither pattern with
(absolute) positions offsets as follows:

(0,0), (-40,+40), (-40,-40), (+40,-40), (+40,+40) arcsec


Each field should be observed in each filter before moving to the
next field.


The total exposure times per filter for each field are:

J:      12 minutes
H:       8 minutes
Ks:      5 minutes
H_2:     5 minutes
Brgamma: 5 minutes


We have no specific requirements for the DITs; standard values
should be OK, but note that there are quite bright objects in
some of the fields (eta Car has J=1.65, H=1.07, K=0.17).
[Since we are mainly interested in the faint objects, it is
not a big problem that the brightest stars will be saturated.]


We do not need specific standard star observations.


The attached file contains a finding chart where the position
of each mosaic field is marked on the 2MASS J-band image.