N. Mirabal & J. P. Halpern (Columbia) report on behalf of the
MDM Observatory GRB follow-up team:

"Here are further details of the R-band optical counterparts 
of the Chandra X-ray sources listed by Ricker et al. (GCN #1185),
as measured on Dec. 7.24, including estimated magnitudes using
Landolt star calibration, and morphological comments:

Source                  Optical Position           R     Comment 
-------------------------------------------------------------------------
CXOU J030527.9+034657   03 05 27.85 +03 46 56.9   20.0   galaxy
CXOU J030532.5+035140   03 05 32.46 +03 51 40.0   19.8   stellar  *
CXOU J030534.3+034958   03 05 34.21 +03 49 58.2    ?     blended  * 
CXOU J030514.2+034854   03 05 14.18 +03 48 54.4   21.7   galaxy?
CXOU J030550.1+035009   03 05 50.02 +03 50 08.5   21.6   stellar
CXOU J030458.7+034702                            >23
CXOU J030541.4+034808   03 05 41.53 +03 48 07.4   21.5?  near bright star
CXOU J030534.2+034208   03 05 34.18 +03 42 08.9   22.3   galaxy?
CXOU J030512.9+034936   03 05 12.89 +03 49 36.3   21.6   ?
CXOU J030536.0+035303   03 05 35.95 +03 53 02.9   22.9   ?
-------------------------------------------------------------------------
* Blue stellar object on POSS II

A finding chart is at http://www.astro.columbia.edu/~jules/mdmchart.ps

This message may be cited."

N. Mirabal & J. P. Halpern (Columbia) report on behalf of the
MDM Observatory GRB follow-up team:

"We obtained R-band images on the MDM 1.3m for 2 hours on each
of the following nights, covering the positions of all ten
Chandra X-ray sources listed by Ricker et al. (GCN #1185):

Dec. 6.18
Dec. 7.24
Dec. 9.27

We detect constant optical counterparts of nine of the ten
sources.  The source CXOU J030458.7+034702 is not detected
in any of our images to an approximate limiting magnitude
R > 23.  Deeper optical images of this location would be
useful.

This message may be cited."

J. P. Halpern, N. Mirabal, E. V. Gotthelf (Columbia), & J. Kemp
(Joint Astronomy Centre/Columbia) report on behalf of the MDM
Observatory GRB follow-up team:

"R-band images of this field taken on three nights and previously
described in GCNs #1186 and #1187 also cover the positions of the
two radio sources described by Frail (GCN #1207).  Optical images
of both sources are shown on the web page given below.  Neither
show evidence of variability.  The point radio source corresponding
to CXOU J030532.4+034301 is approximately equidistant (3") from 
three optical objects. It is not clear which, if any, is the
counterpart.

Examination of the I-band images obtained on the MDM 1.3m on
Dec. 2.30 UT (GCN #1177) under bright lunar conditions shows
marginal detections of the two brightest Chandra sources on
the list of Ricker et al. (GCN #1185), CXOU J030527.9+034657
and CXOU J030532.5+035140. The combined I-band image is slightly
deeper than the POSS-II IVN plate, but does not provide any
evidence for variability of the detected objects.  In addition,
we note that examination of blue and red POSS II plates shows
blue objects at the locations of CXOU J030532.5+035140 and
CXOU J030534.3+034958.

Details of MDM images are posted at
http://www.astro.columbia.edu/~jules/grb/011130/

This message may be cited."

N. Mirabal, J. P. Halpern (Columbia), & J. Kemp (Joint Astronomy
Centre/Columbia) report on behalf of the MDM Observatory GRB follow-up
team:

"I-band images obtained on the MDM 1.3m for 100 minutes starting on
Dec 2.30 UT also show the object reported by Lee et al. (GCN #1175)
near the position of the radio source reported by Berger & Frail
(GCN #1173).  We have not reported this object (until now) because
the position we measured for it with respect to the USNO-A2.0 is
(J2000) 03:05:25.02, +03:46:13.9 with an estimated uncertainty
of 0.6".  This is consistent with the position measured by Lee et al.,
but it is 4.7" from the radio source, thus unlikely to be an optical
transient."