How to specify first transient detection in filters

Support
#1

Hello: I’m trying to filter only the first measurement of a newly discovered transient for ZTF.

I used the following :

AND objects.jdmin > JDNOW() - 1

However, here is just one example of many a transient that was discovered long ago that passed my filter just now:

ZTF20abaohfi

Discovery Date: 2021-06-05 09:39:10 UTC

Can you please tell me how to select the first detection of a new object by ZTF?

Thanks,

-Bruce

#2

Hi Bruce,
Thanks for the question, would you mind letting us know what service you’re using to try to filter the first measurement of the transient?