Details

Autor(en) / Beteiligte

• Ghinassi, F.
• Licandro, J.
• Oliva, E.
• Baffa, C.
• Checcucci, A.
• Comoretto, G.
• Gennari, S.
• Marcucci, G.

Titel

Transmission curves and effective refraction indicesof MKO near infrared consortium filters at cryogenictemperatures

Ist Teil von

• Astronomy and astrophysics (Berlin), 2002-05, Vol.386 (3), p.1157-1159

Ort / Verlag

EDP Sciences

Erscheinungsjahr

2002

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• We report transmission measurements at cryogenic temperatures for 4 broad-band filters of the Mauna Kea Observatories (MKO) near-infrared filter set and 5 narrow-band filters. The spectral scans were collected using the multi-mode IR instrument of the TNG telescope (NICS) in which these filters are permanently mounted and commonly used for astronomical observations. We determined the transmission curves at a temperature of 78 K and found no significant red–leak up to 2.6 , the data are available in electronic form on the TNG web page. We also estimated the variation of the wavelength response with the incidence angle and found it compatible with an effective refractive index of $\simeq$2 (see Eq. ([see full text])).