HiRES: the High-Resolution EUV Spectroheliometer

J. Gethyn Timothy; Paolo Bergamini; Jagadish C. Bhattacharyya; Martin H.C. Huber; Surendra K. Jain; Giampiero Naletto; Ralph W. Nicholls; Piergiorgio Nicolosi; Ajay Kumar Saxena; Giuseppe Tondello; Arthur B. C. Walker II

doi:10.1117/12.290135

15 October 1997 HiRES: the High-Resolution EUV Spectroheliometer

J. Gethyn Timothy, Paolo Bergamini, Jagadish C. Bhattacharyya, Martin H.C. Huber, Surendra K. Jain, Giampiero Naletto, Ralph W. Nicholls, Piergiorgio Nicolosi, Ajay Kumar Saxena, Giuseppe Tondello, Arthur B. C. Walker II

Author Affiliations +

Proceedings Volume 3114, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII; (1997) https://doi.org/10.1117/12.290135
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

The high-resolution EUV spectroheliometer (HiRES) is our first step towards the 0.1 arc sec angular resolution goal at EUV wavelengths. The HiRES instrument consists of a Gregory telescope with a 45-cm-diameter primary mirror, and an imaging EUV spectrometer, employing a single-reflection toric diffraction grating in a Rowland circle mounting and an imaging pulse-counting multi-anode microchannel array (MAMA) detector system. The MAMA detector covers the spectral range from 560 to 631 angstrom with a spectral resolution of 70 mAngstrom. A Pt/Ne lamp impresses a wavelength calibration spectrum on the upper part of the detector while the solar spectrum is recorded simultaneously on the lower part. The times-of-arrival and addresses of the detected photons are transmitted directly to the ground to allow correction of the SPARCS pointing jitter. The HiRES spectrometer slit is pointed to a specific location using real-time control of the SPARCS, and SPARCS can be commanded to execute a linear (push broom) scan across the sun. Two EUV photodiodes are used to measure the absolute sola irradiances and the atmospheric extinction profiles in wavelength bands centered at 304 angstrom and 584 angstrom respectively.

Citation Download Citation

J. Gethyn Timothy, Paolo Bergamini, Jagadish C. Bhattacharyya, Martin H.C. Huber, Surendra K. Jain, Giampiero Naletto, Ralph W. Nicholls, Piergiorgio Nicolosi, Ajay Kumar Saxena, Giuseppe Tondello, and Arthur B. C. Walker II "HiRES: the High-Resolution EUV Spectroheliometer", Proc. SPIE 3114, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII, (15 October 1997); https://doi.org/10.1117/12.290135

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
14 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Extreme ultraviolet

Telescopes

Mirrors

Sensors

Space telescopes

Spectroscopy

Imaging systems

Show All Keywords

Keywords/Phrases

Search In:

Publication Years