INAF-OAR National Institute for Astrophysics - Italy The SAMM project Roberto Piazzesi, Marco Stangalini, Roberto Speziali, L. Dal Sasso, and the SAMM Team INAF-OAR National Institute for Astrophysics - Italy
Who we are External companies:
Funding Ministry for Economic Development (MISE) call Dal Sasso srl / INAF-OAR apply Financing awarded by MISE in 2015 Project total: 1M€ Project begins January 2016 Timeframe: 3 years First funds instalment May 2016
The Project Key aspects: - Medium res. (0.5 arcsec/px)magnetograms at two heights in the solar atmosphere - Fast acquisition cadence (a few ms) to freeze atmosphere. Thanks to sCMOS technology - Optical path designed to minimize optical components and induced polarization - Compact structure easily deployable - Robotic telescope and observatory
MOF: how it works MOF technology is already tested (e.g. MOTH, VAMOS telescopes) and used in many fields beyond astronomy. It has provided high impact science results (magneto-acoustic portals, see for example Jefferies et al. 2006).
Timeline January 2016: identification of requirements February 2016: start of opto-mech. design December 2016: start of realization and assembly February 2017: lab tests and verifications September 2017: first optical quality on-sky verification tests January 2018: first channel completed and on-sky tests
Electro- Optical Unit First assembly 1st channel installed Final
Issues Development site: Aprilia (Rome) Seeing conditions… not ideal… Waiting for some key components Lower cost alternatives temporarily installed In the meantime… Maximise optical quality Proof-of-concept magnetograms/ dopplergrams
On-sky optical quality verification First light (AR12665) worst conditions no flat, no calibration, no tip- tilt
Fourier Lucky Imaging algorithm SAMM HMI/SDO Fourier Lucky Imaging algorithm Short exposure: “freeze” seeing reconstruction algorithms limit effects of atmospheric turbulence
Solar minimum ...but recent optimizations resulted in an increase of optical quality. Fourier Lucky Imaging concept tested and verified on-sky.
Future SAMM+: towards a four channel MOF robotic instrument. Hungarian Solar Physics Foundation (hspf.eu <http://hspf.eu/>) and SP2RC/Sheffield: support for SAMM (observatory and cameras). Plan to install SAMM at Gyula Observatory. Univ. Sheffield/Katholieke Universiteit Leuven/Academy of Athens/University of Turku/ INAF / Univ. Tor Vergata: partnership for H2020 call. In particular, UToV based on their extensive experience gained with MOTH, will contribute the calibration pipeline and the realization of a database service. (Don’t miss their talk at 16:20!)
Thank you!