NIKA Run#3 Summary of Off line processing Results

Work in progress (Don't shoot) The main document is here

Focal Plane Geometry and Beams

Both RZ (Mopsic) and NP (IDL, from This pdf) have found a distortion of the focal plane geometry well beyond the expected one.

average FoV 1mm RZ 2mm beams in PF (RZ)

FoV 1mm&2mm NP

The focal plane distortion affects the beams in a correlated fashion with the Focal Plane Geometry distortion. This points towards a general optical distortion common to both detectors (an optical element is misplaced in the optical train).

Glitches and Mars plateau

plateau@1mm uPixs Jy

Cosmetics

rms of maps per scan per kid per beam averaged over 5 scans

Noise per scan per kid per beam averaged over 5 scans

Photometry

Evolution of the sky opacity during Run#3

Run#3 225GHz opacity at zenith

Absolute photometry

Using pointing sources (mostly quasars), we can compare the absolute flux measured with NIKA run3 with an estimate (provided by Samuel Leclercq) obtained using PdB measurements (error bars for PdB is a flat 10% assumption). The assumption for the NIKA photometry is that the Uranus flux is a blacbody with a temperature of and the opacity (as shown above) is correct. The summary of the photometry is given here as a spreadsheet and in this figure: Run#3 NIKA vs PdB comparison The agreement is reasonable from 1.5 to 15 Jy.