M2.3

Lead Beneficiary: OBSPARIS

Beneficiaries involved: KO

Due Date: modified from month 12 to month 24.

Goal

Start of publication of NaD1 magnetograms

Progress so far

This is a major instrumental project which takes more time than we estimated. The milestone date was shifted from end 2009 to end 2010. The calendar is the following:

First step: May 2009 observe LOS magnetic fields in H alpha, FOV 4' x 1' with the present H alpha optical system depending on the presence of sunspots on the solar surface.

Second step: June 2009 observe LOS magnetic fields in NaD1, FOV 4' x 30" after installation of the NaD1 optical system (needs optical work)

Third step: autumn 2009 Replacement of the old (and slow) CCD by a faster CCD in order to reduce time between I+V and I-V observations and increase temporal resolution (needs mechanical and computer work)

Fourth step: fall 2010 Achieve the solar surface scanning device in order to pass the FOV from 4' x 30" to 4' x 4' (needs mechanical, electronic and computer work)

Fifth step: end 2010 start observing campaigns of active regions

The progress is at 10%.