Osservatorio Astrofisico di Arcetri

logosmallarcetri Arcetri Technical Reports 12/1999

The Infrared grisms for ArNICa

D. Ferruzzi

Osservatorio Astrofisico di Arcetri


In this report, we present the main characteristics of the grisms we have design ed for ArNICa (Arcetri Near Infrared Camera) for the TIRGO Telescope and we show the results of the measurements and laboratory tests. The three designed grisms cover the J (1.25 um), H (1.65 um) and K (2.22 um) at low (R~300) resolution. 

The laboratory tests and the first observation made with ArNICa as a spectrographic instrument are in agrement with the optical simulations and compliant with the scientific requestes. We show the main characteristics of the grisms of ArNICa and present the performed laboratory tests: the first one to study the efficiency curves of the grisms and the second one to study the simulation of operative condition of ArNICa at the telescope by using an optical element that reproduces the telescope. At last, the first observation at Gornergrat Telescope obtained by Dr. G.P.Tozzi and Dr. M.Di Martino about the spectrum of the Asteroid 1588 is shown.

The complete report.