HST 14176+5226

Observed	HST Model	MLE Model	Residual	Lensed source	Filter
					F814W i4.m0
					F606W v4.m0

HST 14176+5226 is the first MDS HST ``Einstein Cross'' lens candidate, found in the ``Groth-Westphal strip'' (GWS).
This is the brightest lens system discovered with the HST and it has been confirmed spectroscopically.
The elliptical lensing galaxy has a redshift of z=0.803 and a color index (V-I)=1.9 mag.
The lensed source at redshift z=3.4 appears to be a QSO with an apparent color (V-I)=0.5 mag.
The impact radius is 0".13
The image magnification is about 2.4 magnitudes, making each component about 0.9 mag brighter than the source QSO.
The modeled image gives a very good fit to the observed image, with a normalized chi² of unity.

Name	HST14176+5226
Equatorial(J2000)	14:17:36.3	+52:26:44	PA_V3=32^o.93
HST WFPC2	Groth GTO:5090 1994-Mar-11
Dataset[g][x,y]	U26X0801T[3][242,700]
MDS Field:id lens galaxy	u26x8:0009

HST WFPC2 Filter	F814W		F606W
Exposure seconds	4 x 1100		4 x 700
log (integrated S/N Ratio)	3.57		3.10
Fitted Parameter	MLE	+/- rms	MLE	+/- rms

Sky Mag. (arcsec²)	22.236	0.003	22.775	0.003
Total Mag of lens galaxy	19.80	0.01	21.74	0.03
X centroid 0".1 Pix	242.92	0.02	242.79	0.03
Y centroid 0".1 Pix	699.92	0.02	700.09	0.04
Half-light radius	1".004	0".017	1".184	0".032
Orientation of light	- 41^o.5	1^o.0	- 41^o.9	2^o.6
Axis Ratio of the light	0.69	0.01	0.65	0.03
Mag. of lensed source	25.72	0.08	26.19	0.06
Source X offset 0".1 Pix	- 0.28	0.05	- 0.19	0.05
Source Y offset 0".1 Pix	1.20	0.05	1.36	0.04
Critical Radius	1".489	0".006	1".496	0".004
Axis Ratio Lens mass	0.40	0.01	0.37	0.01
Lens Orientation	- 29^o.1	0^o.3	- 28^o.5	0^o.2
Source half-light	0".054	0".006	0".045	0".007
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