Stephen Rolt
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chromatic 84, 85, 88 monochromatic 37 third order 38, 46, 99, 369, 395, 401, 474 transverse 38, 43, 53, 56, 440, 474 transverse chromatic 85, 86, 88 AB magnitude convention 166 Absolute magnitude (stellar) 166 Absolute radiometry 155, 165,…
View article: The integral field unit for the James Webb space telescope's near-infrared spectrograph
The integral field unit for the James Webb space telescope's near-infrared spectrograph Open
The European Space Agency (ESA) is providing the Near Infrared Spectrograph (NIRSpec) developed by EADS Astrium GmbH to fly on the James Webb Space Telescope (JWST). NIRSpec covers the 0.6-5.0 µm domain. It will be primarily operated as a …
View article: Preliminary optical design of an Active Optics test bench for space applications.
Preliminary optical design of an Active Optics test bench for space applications. Open
This communication presents a preliminary optical design for a test bench conceived within the European Space Agency's TRP project (Active Optics Correction Chain (AOCC) for large monolithic mirrors) with the goal of designing and developi…
View article: A four mirror anastigmat collimator design for optical payload calibration
A four mirror anastigmat collimator design for optical payload calibration Open
We present here a four mirror anastigmatic optical collimator design intended for the calibration of an earth observation satellite instrument. Specifically, the collimator is to be applied to the ground based calibration of the Sentinel-4…
View article: An efficient stable optical polariser module for calibration of the S4UVN earth observation satellite
An efficient stable optical polariser module for calibration of the S4UVN earth observation satellite Open
We describe here an optical polariser module intended to deliver well characterised polarised light to an imaging spectrometer instrument. The instrument in question is the Sentinel-4/UVN Earth observation imaging spectrometer due to be de…