LAS & GCS SV2 reports Nicolas Lodieu “UKIDSS SV meeting”, Edinburgh, 15 December 2005

LAS report

Photometry of known L/T dwarfs

LAS diagrams (1) No constraint on the Class WFCAM tile @ RA=10h46 dec=04°24' No constraint on the Class Separation Stars & Galaxies

LAS diagrams (2) (J-H,Y-J) diagram (J-K,Y-J) diagram

LAS vs SDSS (J-K,z-J) diagram (J-K,z-J) diagram WFCAM tile @ RA=10h46 dec=04°24' WFCAM tile @ RA=09h40 dec=45° (J-K,z-J) diagram (J-K,z-J) diagram

Finding charts

GCS report

IC4665: completeness limits

IC4665: errors on the magnitudes Y Z 0.1 mag @ Y=19.0 0.1 mag @ Z=19.0 J H 0.1 mag @ J=18.5 0.1 mag @ H=18.0 K J zoom 0.1 mag @ K=17.0

IC4665: CMD (1) (Y-J,Y) CMD from SV1

IC4665: CMD (2) (Y-J,Y) CMD from SV2

IC4665: Finding charts

Coma Ber: (Y-J,Y) CMD

Coma Ber: Finding charts

Upper Sco: (Z-J,Z) CMD

IC4665: colour-colour diagram

Conclusions 1) Pipeline 2) Suggestions for WSA Main concern: photometry in LAS and GCS 1) Pipeline seems to detect objects with nothing at their nominal positions 2) Photometry seems unreliable when two stars are close to each other 2) Suggestions for WSA 1) Coordinates in sexagesimal format when an image is output (currently only coordinates in degrees are output) 2) Possibility to input a list of objects to get their UKIDSS photometry