1236-684: The optical counterpart proposed by Jauncey -for which we give
optical coordinates in Table 1 (click here)- is incorrect. This conclusion is sustained by
the high (radio-optical) residuals obtained when comparing our optical
position for this object with the VLBI radio position given by Johnston (see
Table 2 (click here)). As illustrated by Fig. 1 (click here), which shows more or less precisely the
position of the radio source, the object proposed by Jauncey lies well offset
to the NE of the radio source. At the limit of our plates (),
no faint alternative counterpart is seen. The finding chart and the radio
source position identification were obtained using standard IRAF procedures
from a digitized image extracted from the Digitized Sky Survey (DSS), produced
by the Space Telescope Science Institute. The scan used is based on a 4 min.
exposure visual plate taken with the UK Schmidt telescope. The unfortunate
fact that this scan is based on a shallow ``supplemental" plate of the UK
Schmidt southern sky survey plate collection, prevented us from examining the
possible existence of a very faint alternative optical counterpart, at a
magnitude level of
(which is the approximate limiting
magnitude of the ``standard" deep blue UK Schmidt survey plates).
Figure 2: Finding chart for 2314-409. Chart is 9 arcmin on a side. See
Sect. 4
for details
2052-474: The finding chart for this object published by Jauncey is incorrect. A correct identification for the optical counterpart of this source can be found in Murdoch et al. (1984).
2314-409: Identification of the optical counterpart of this source is claimed by Jauncey, but no finding chart has been published. In Fig. 2 (click here) we present a tentative optical counterpart for this source, whose coordinates are given in Table 1 (click here). The finding chart and the optical identification were obtained, as explained for Fig. 1 (click here), from a DSS scan based on a 60 min. exposure UK Schmidt blue plate.