ZTF-Photometry Workshop

16 Sept 2015, 09:00 → 18 Sept 2015, 17:00 Europe/Berlin

Villa (DESY, Zeuthen)

Wednesday 16 September

1 Coffee, Breakfast & Welcome

Science Requirements

2 ZTF users and needs

Speaker: Shri Kulkarni

Slides Kulkarni_ZTF.pptx

3 ZTF requirements document

Speaker: Eran Ofek

Slides ofek_requirements.pptx

4 SN cosmology

Speaker: Marek Kowalski

Slides kowalski_sn.pdf

5 Galactic science

Speaker: Eric Bellm

12:00 Lunch

External experience

6 Lessons from SDSS and preparation for LSST

Speaker: Lupton

Slides SDSS-LSST.pdf

7 Calibration with the SNIFS IFU

Speaker: Jakob Nordin

Slides ztf_snifs.pdf

14:30 Coffee break

Current iPTF pipelines: reduction, detection and photometry

8 Requirements for deep stacks, online detection

Speaker: Peter Nugent

9 The iPTF IPAC pipelines ; what works what doesn’t

Speaker: Frank Masci

Slides masci_ZTFmeeting_Sep2015.pdf

10 iPTF photometry

Speaker: Brad Cenko

11 Galactic science requirements

Speaker: Miller

17:00 Dinner

Thursday 17 September

09:30 Coffee & breakfast

ZTF project

12 Understanding CFHT throughput & cross-calibration to SDSS

Speaker: Nicolas Regnault

13 ZTF hardware and planning status

Speaker: Eric Belim

14 Tools for an optimized science survey

Speaker: Ariel Goobar

12:00 Lunch

Discussion session

•Calibration issues for ZTF (problems and ideas for solutions)
◦What needs to be done during nightly observations, what can be done afterwards?
◦what are the fundamental limits on our (absolute, relative) photometric precision?
◦filter: stability, homogeneity
◦PSF: stability, homogeneity
◦Choice of photometric algorithms
◦Extinction & zero points
◦Strategy: which calibration stars, which filters? Calibration fields?
◦(potential) hardware issues: stray light, ghosting, shutter uniformity
◦flat fielding
◦Forced photometry on difference images vs. source-detected photometry
◦Chip-to-chip subtraction vs sky coverage

Other resources & cross-calibration issues

15 In-situ hardware calibration (UH, ZTF,...)

Speaker: Daniel Küster

Slides Kuesters_Calibration_Units.pdf

16 GROWTH; SEDMachine;ubercal; dome flat .....

Slides Konidaris_SEDmachine.pdf

15:00 Coffee break

Planing for Friday

● Scheduling/monitoring
● Software Pipeline
● Hardware
● Other resources

Friday 18 September

09:30 Coffee & breakfast

Reserved for further discussion and hands on work