1. DEEP LENS SURVEY Long term dual hemisphere campaign
Multiband very deep photometry
3-D mass tomography in 28 sq deg
Transient detections available in real time
on the web:

2. BVRz to 26 mag over 28 sq.deg

3. Gravitational Lensing
must resolve

4. Weak Gravitational Lensing
Uses distortion of background galaxies to map foreground mass concentrations.
Complements SN and CMB measurements

5. Galaxy size vs redshift

6. Correcting PSF
e=0.1
<0.01

7. N-body CDM Simulation

8. Real Weak Lens Mass Map

9. Weak lensing “cosmic shear”

10. T. Tyson 2001

11. Color-redshift

12. Galaxy Distribution for pre-LSST 28 square degree survey

13. 3-D Mass Tomography

14. Cluster detected in weak lensing shear map

15. Lens Redshift Likelihood
Wittman, etal 2001

16. Current survey: some dark clusters
40 arcmin
Mass maps
Optical images

17. Growth rate shear statistic [sources at z=1]

18. Opening the Optical Time Window
Orphan afterglows
Stellar variability
Caustic crossings
Hi-z AGN/QSO
The Unknown

19. Frame Subtraction is at Poisson Limit

20. Leads to non-traditional search algorithms
Alard-Lupton Algorithm, implemented by G. Bernstein and A. Becker:
~120 CPU-sec for 2K x 2K align/convolve/subtract
Leads to non-traditional search algorithms

21. Transients from the Deep Lens Survey