All-Sky Automated Survey for Supernovae

Sky Patrol

Making ASAS-SN light curves public is primarily funded by grant GBMF5490.

Enter the Right Ascension and Declination:

The reCaptcha app may report a time-out during your query, but this will not affect its completion.

When using ASAS-SN light curves in publications, cite Shappee et al. (2014) and either (i) The ASAS-SN Catalog of Variable Stars I: Jayasinghe et al. (2018a), or (ii) The ASAS-SN Catalog of Variable Stars II: Jayasinghe et al. (2018b)

Data from the Sky Patrol has already been used in these publications and more are coming.

Important update (September 2018): We are now serving both V-band (Cameras ba-bh) and g-band (Cameras bi-bt) photometry, see "Examples" link below for details.

WARNING: V-band and g-band magnitudes obtained via this page are calculated in real-time using aperture photometry, with zero-points calibrated using the APASS catalog. ASAS-SN images have 8" pixels (~15" FWHM PSF,) so blending/crowding might be significant in some cases. The "Examples" page linked below, and Kochanek et al. (2017) paper, illustrate some of the potential problems. Always proceed with caution before publishing. This page is meant to obtain a relatively small number of light curves - if you need light curves of many (>100) objects, please contact us.