Agenda

• Mickael's summary of the recent Chicago SN meeting
• Image co-addition pipeline summary

Minutes

Co-addition pipeline

Defringe (Medford+ in prep) ==> SWarp to build coadds

• Restrict input data to seeing > 1.2" and < 2" , using ztfquery
• Have HOTPANTS running
• ZOGY only estimates PSF at the center. Can we get a PSF at each position?

Do we require Ubercal? Does Ubercal require a dither pattern?

Summary of Chicago SCAM meeting

• Summary of Surveys, e.g. SNfactory, Foundation, DES
• Subaru HSC high-z light curves look amazing (no more appropriate word to describe it)
• Velocity step found in Foundation data
• SIRAH is approved and in full swing (PI: S. Jha)
• Intrinsic scatter is an issue: Should we only use blue SNe? (Scolnic)
• Discussion about the BBC method and if there is a mass step in the DES data
• Can we draw underlying distributions without accounting for the correlation between x1, c and the mass step?