&lt;title&gt;Stray-light analysis of the SABER telescope&lt;/title&gt;

Stauder, John L.; Esplin, Roy W.; Zollinger, Lorin; Mlynczak, Martin G.; Russell, James M.; Gordley, L. L.; Marshall, B. T.

doi:10.1117/12.221362

Cited by 7 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The stray light analysis program APART was used to predict SABER's off-axis response and to aid in the telescope design 5,6 . The software model showed that mirror scatter is the dominant source of stray light for the short wavelength channels.…”

Section: Comparison Of Measured Results To Software Modelmentioning

confidence: 99%

See 1 more Smart Citation

Off-axis response measurement of the sounding of the atmosphere using broadband emission radiometry (SABER) telescope

et al. 2002

Self Cite

View full text Add to dashboard Cite

The Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument is a 10-channel earth limb-viewing sensor that measures atmospheric emissions in the spectral range of 1.27 µm to 16.9 µm. SABER is part of NASA's Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics (TIMED) mission, which was successfully launched in December 2001. Uncommon among limb-viewing sensors, SABER employs an on-axis telescope design with reimaging optics to allow for an intermediate field stop and a Lyot stop. Additional stray light protection is achieved by an innovative inner Lyot stop, which is placed conjugate to the secondary obscuration and support structure. Presented in this paper is the off-axis response of SABER as measured in the Terrestrial Black Hole off-axis scatter facility at the Space Dynamics Laboratory. The measurement was made at visible wavelengths; thus, the response is only representative of SABER's short wavelength channels. The measurement validated the stray light design and complemented the APART software model, which predicts that mirror scatter is the dominant stray light mechanism at short wavelengths. In addition, estimates of the mirror bi-directional reflectance distribution function (BRDF) were made. The off-axis response measurement indicates that SABER is an exceptional stray light suppression telescope.

show abstract

Section: Comparison Of Measured Results To Software Modelmentioning

confidence: 99%

“…The instrument description and mission objectives are described in greater detail elsewhere 1,2 . Stray light analyses performed using the software programs APART 3 and ASAP 4 have also been documented [5][6][7] . The results of the off-axis response measurement of SABER are presented in this report.…”

Section: Introductionmentioning

confidence: 99%

Off-axis response measurement of the sounding of the atmosphere using broadband emission radiometry (SABER) telescope

et al. 2002

Self Cite

View full text Add to dashboard Cite

show abstract

“…SABER's optical system was designed specifically to have extremely high rejection of off-axis light. Initial analysis of SABER's stray light performance is reported by Stauder et al (1995). During the development of the instrument, a stray light analysis was performed using a non-sequential ray tracing Zemax model of SABER and an SDL software program to compute the Normalized Detector Irradiance (NDI).…”

Section: Saber Stray Light Parametersmentioning

confidence: 99%

Sounding of the Atmosphere Using Broadband Emission Radiometry (SABER): Instrument and Science Measurement Description

Esplin,

Mlynczak,

Russell

et al. 2023

Earth and Space Science

Self Cite

View full text Add to dashboard Cite

SABER (Sounding of the Atmosphere using Broadband Emission Radiometry) is a 10‐channel infrared radiometer that is one of four instruments on the NASA TIMED (Thermosphere‐Ionosphere‐Mesosphere Energetics and Dynamics) satellite mission to study the structure, energetics, chemistry, and dynamics of the Earth's mesosphere and lower thermosphere. Each of the ten SABER channels has a unique filter over its detector. The filter passes infrared radiation within a defined spectral region that optimizes the ability to derive temperature and constituent concentrations from the infrared radiance measurements. The TIMED spacecraft was launched into a 625 km circular polar orbit (74.1° inclination) via a Boeing Delta II rocket from Vandenberg Air Force Base on 7 December 2001. SABER continues to operate nominally and collect data routinely as it has for over 21 years. Nearly 2,200 peer‐reviewed journal articles have been published worldwide using SABER data. A list of these articles is included in Supporting Information S1 accompanying this paper. This paper presents a detailed technical description of the SABER instrument including major subsystems of the instrument and technical performance parameters. This paper comprehensively describes the instrument and its components and provides final instrument design and performance parameters. The motivation for this paper is to document this information permanently for future reference. The Space Dynamics Laboratory (SDL) of Utah State University designed, fabricated, and calibrated the SABER instrument in close collaboration with NASA Langley Research Center, Hampton University, and Global Atmospheric Technologies and Science (GATS).

show abstract

“…系统杂散光抑制水平主要由 PST 进行评价，其定义为光学系统视场外离轴角 θ 的光源经光学系统后，在像面处产生的辐照度 Ed(θ)与垂直于该点源的入瞳处辐照度 Ei(θ)的比值 [19][20] :…”

Section: -unclassified

Optical Design and Stray Light Analysis for Ultraviolet Board Width Off-Axis Four Mirrors Optical System

Zhu¹,

Zhang²,

Wu³

et al. 2015

中国激光

View full text Add to dashboard Cite

To satisfy the far ultraviolet space imaging system with super wide field, larger relative aperture, miniaturized size and good stray light suppression, a method based on the inverse focal power allocation theory is applied to calculate the structure of all spherical surface reflective system. The relevant technical parameters of all spherical off-axis optical system include focal length 12 mm, F number 3 and field of view 70°× 10°. Such a design will consider to eliminate stray light of optics and structure, analyze stray light and main sources. The modulation transfer functions (MTF) at the cutoff spatial frequency are larger than 0.7 at all fields and the point sources transmittance (PST) arrives to 4.2 × 10 7 which is far less than 5 × 10 5 when the evadable angle out of the field of view is 10°. Compared to other optical systems, the main advantage of this system is that it can achieve super wide field with compact structures, utilizes all spherical mirrors which largely decrease the cost of fabrication, and presents high level of stray light suppression.

show abstract

<title>Stray-light analysis of the SABER telescope</title>

Cited by 7 publications

References 4 publications

Off-axis response measurement of the sounding of the atmosphere using broadband emission radiometry (SABER) telescope

Off-axis response measurement of the sounding of the atmosphere using broadband emission radiometry (SABER) telescope

Sounding of the Atmosphere Using Broadband Emission Radiometry (SABER): Instrument and Science Measurement Description

Optical Design and Stray Light Analysis for Ultraviolet Board Width Off-Axis Four Mirrors Optical System

Contact Info

Product

Resources

About