LensWatch :

watching strong lenses,

waiting for stars to explode

The LensWatch collaboration is an international group of astronomers searching for lensed SNe with targeted surveys of known strong-lensing systems (galaxies and clusters). We have been awarded a 3-year HST Target of Opportunity program, beginning in Cycle 28, for follow-up of any lensed SN candidate. The primary science goal is to classify the lensed SN and measure the gravitational lensing time delay to measure the Hubble-LeMaître constant, H0.

Collaboration: who we are

Ongoing Strong Lens monitoring campaigns and follow-up programs

Monitoring wide-field survey alert streams (ZTF, PS1, etc.)

Software Development and Simulations projects

Internal Team Site


(collaboration policies, meetings, etc)