HST 12531-2914

Observed	HST Model	MLE Model	Residual	Lensed source	Filter
					F814W i4.m0
					F606W v3.m0

HST 12531-2914 is the second MDS HST ``Einstein Cross'' lens candidate.
The elliptical lensing galaxy has an apparent color (V-I)=2.0 mag.
The lensed source appears to be point-like with a color (V-I)=0.2 mag.
The impact radius is 0".06.
The image magnification is about 2.3 magnitudes, making each component about 0.8 mag brighter than the point-like source.
The model gives a very good fit with a normalized chi² of unity.

Name	HST12531- 2914
Equatorial(J2000)	12:53:06.7	- 29:14:30	PA_V3=127^o.77
HST WFPC2	Griffiths GO-PAR:5369 1995-Feb-15
Dataset[g][x,y]	U26K7G04T[3][755,326]
MDS Field:id lens galaxy	urz00:0035
HST WFPC2 Filter	F814W		F606W
Exposure seconds	4 x 2100		3 x 1800
log (integrated S/N Ratio)	2.69		3.14
Fitted Parameter	MLE	+/- rms	MLE	+/- rms
Sky Mag. (arcsec²)	21.959	0.002	22.499	0.002
Total of lens galaxy	21.76	0.02	23.81	0.04
X centroid 0".1 Pix	754.68	0.01	754.64	0.03
Y centroid 0".1 Pix	326.13	0.02	326.48	0.03
Half-light radius	0".205	0".007	0".180	0".011
Position Angle light	18^o.7	4^o.0	39^o.0	6^o.2
Axis Ratio of the light	0.78	0.03	0.64	0.07
Mag. of lensed source	27.42	0.13	27.65	0.14
Source X offset 0".1 Pix	- 0.40	Fixed	- 0.40	0.06
Source Y offset 0".1 Pix	0.50	Fixed	0.50	0.07
Critical Radius	0".644	Fixed	0".644	0".006
Axis Ratio Lens mass	0.44	Fixed	0.44	0.04
Lens Orientation	22^o.5	Fixed	22^o.5	0^o.9
Source half-light	0".030	Fixed	0".030	0".009
Source Orientation	0^o.0	Fixed	0^o.0	Fixed
Source Axis-Ratio	1.00	Fixed	1.00	Fixed

Lens galaxy from MDS-Pipeline fit