CARMA. CARMA 225 GHz map with 0.9’’ beam (C-array) 1’’ is not good enough! BN? source I.

CARMA

CARMA 225 GHz map with 0.9’’ beam (C-array)1’’ is not good enough!

BN?

source I

subarcsec resolution requires adaptive optics to correct for atmospheric blurring

blobs of water vapor

signal delayed to this antenna

differences from optical or NIR adaptive optics• water vapor fluctuations are the main problem• time scales of seconds, not milliseconds• no laser guide stars

paired antenna calibration (PACS)observe nearby calibrator at 30 GHz with 3.5-m antennas

3.5-m ant

quasar science target

paired antenna calibration in action

1mm B-array map before/after PACS corrections

BN

source I

229 GHz continuum map0.15’’ resolution

a reminder: interferometer acts as a spatial filter

H recombination lines toward BNRodriguez et al 2009 CARMA CARMA

CARMA SiO v=086.7 GHz, 0.4’’ res

SiO v=0 spectra suggest rotation about a NE-SW axis

CARMA SiO v=00.85’’ resolution

turnstile junction OMT

Navarrini & Plambeck 2006, IEEE-MTT, 54, 272-277

1mm OMT

Navarrini & Plambeck 2006, IEEE-MTT, 54, 272.

2008 summer school

2008 summer school