High precision metrology for large bandpass filters

B. Sassolas; M. Betoule; N. Regnault; B. Lagrange; D. Hofman; L. Balzarini; L. Pinard; D. Forest; G. Cagnoli; J.-C. Cuillandre; T. Benedict

doi:10.1117/12.2312003

10 July 2018 High precision metrology for large bandpass filters

B. Sassolas, M. Betoule, N. Regnault, B. Lagrange, D. Hofman, L. Balzarini, L. Pinard, D. Forest, G. Cagnoli, J.-C. Cuillandre, T. Benedict

Author Affiliations +

Proceedings Volume 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III; 107064E (2018) https://doi.org/10.1117/12.2312003
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

High precision measurements of the filters bandpass used on wide-field imagers mounted on large telescopes is critical for type Ia supernovae studies. A dedicated spectrophotometric bench is used to re-measure the now decommissioned ugriz filters used for the SNLS on CFHT-MegaCam. A full characterization of the optical response with respect to the location on the surface and the angle of incidence was performed for each filter. Strong variation over the filter surface is observed. The impact of the actual response on the observation is evaluated and we demonstrate an improvement with respect to the previous published results (SNLS1 and 2).

Citation Download Citation

B. Sassolas, M. Betoule, N. Regnault, B. Lagrange, D. Hofman, L. Balzarini, L. Pinard, D. Forest, G. Cagnoli, J.-C. Cuillandre, and T. Benedict "High precision metrology for large bandpass filters", Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 107064E (10 July 2018); https://doi.org/10.1117/12.2312003

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available