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LSSTDESC / Twinkles

10 years. 6 filters. 1 tiny patch of sky. Thousands of time-variable cosmological distance probes.
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Forcing photometry at known/true SN/SLQ positions #298

Open drphilmarshall opened 8 years ago

drphilmarshall commented 8 years ago

@wmwv Delighted to read your post at community.lsst.org about forced photometry at user-supplied sky positions!

I think this is something we'd like to do as part of the Twinkles light curve analysis, to emulate a perfect deblender and focus on the light curve quality in that idealized scenario. Are you thinking along these lines? Tell us more about the question(s) you are interested in!

I guess doing this for Twinkles would involve an upgrade to the DM Level 2 recipe - are you working on this?

wmwv commented 8 years ago

Yes, I am working on exactly this. I trust you'll note that the answers to the post on community.lsst.org mentioned that there was no DM code to do this easily :)

I don't think it will be that bad, just a bit annoying.

drphilmarshall commented 8 years ago

OK sounds good. In our meeting we brought up making a CoaddSource lookalike catalog and ingesting it into the pserv database, and wondering which code package shoudl take care of that (possibly just the Twinkles pipeline, rather than the Monitor).

On Thu, Aug 25, 2016 at 6:51 PM, Michael Wood-Vasey < notifications@github.com> wrote:

Yes, I am working on exactly this. I trust you'll note that the answers to the post on community.lsst.org mentioned that there was no DM code to do this easily :)

I don't think it will be that bad, just a bit annoying.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/DarkEnergyScienceCollaboration/Twinkles/issues/298#issuecomment-242600821, or mute the thread https://github.com/notifications/unsubscribe-auth/AArY9z8-kagGF6HgNg79b3ptxrs5METvks5qjkaygaJpZM4Jtpy3 .

drphilmarshall commented 7 years ago

@jbkalmbach I'm pretty sure this is something we'll want to do at some point, to emulate a magical SL SuperFit that has figured out where the lensed quasar image positions are, and does accurate forced photometry. Unless the astrometry is off, of course, in which case we'll be emulating a very bad SuperFit... Let's take a look at this with @wmwv at CMU next week.