A5059196082- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Adaptive optics and wavefront sensing
- Space exploration and regulation
- Calibration and Measurement Techniques
- COVID-19 and Mental Health
- Astronomical Observations and Instrumentation
- Spectroscopy and Laser Applications
- Geophysics and Gravity Measurements
- Optical Systems and Laser Technology
- Spacecraft Design and Technology
- Technology Assessment and Management
- Solar and Space Plasma Dynamics
- Space Science and Extraterrestrial Life
- History and Developments in Astronomy
- Atmospheric Ozone and Climate
- COVID-19 Pandemic Impacts
- Air Traffic Management and Optimization
- COVID-19 and healthcare impacts
- IoT Networks and Protocols
- Optical Coatings and Gratings
- Spaceflight effects on biology
- Gamma-ray bursts and supernovae
Johns Hopkins University Applied Physics Laboratory
2023
Goddard Space Flight Center
2009-2022
Edith Cowan University
2021
Ames Research Center
2012-2014
Mitre (United States)
2012
Oak Ridge Associated Universities
2009
University of California, Los Angeles
2006-2008
The University of Texas at Austin
2000-2003
The Stratospheric Observatory For Infrared Astronomy (SOFIA) is an airborne observatory consisting of a specially modified Boeing 747SP with 2.7 m telescope, flying at altitudes as high 13.7 km (45,000 ft). Designed to observe wavelengths from 0.3 μm 1.6 mm, SOFIA operates above 99.8% the water vapor that obscures much infrared and submillimeter. has seven science instruments under development, including occultation photometer, near-, mid-, far-infrared cameras, spectrometers, heterodyne...
The Stratospheric Observatory for Infrared Astronomy (SOFIA) has recently concluded a set of engineering flights performance evaluation. These in-flight opportunities are viewed as first comprehensive assessment the Observatory's and used to guide future development activities, well identify additional upgrades. Pointing stability was evaluated, including image motion due rigid-body flexible-body telescope modes possible aero-optical motion. We report on recent improvements in pointing by...
The majority of research investigating healthcare workers' (HCWs) willingness to work during public health emergencies, asks participants forecast their perceptions based on hypothetical rather than in response the actual emergencies they have experienced. This explored frontline HCWs Australia's first wave COVID-19 pandemic among HCWs.Participants (n = 580) completed an online questionnaire regarding pandemic.A total 42% reported being less willing compared before. Availability personal...
FLITECAM is a 1-5 micron infrared camera for NASA's Stratospheric Observatory Infrared Astronomy (SOFIA). A 1024 ×1024 InSb ALADDIN III detector and large refractive optics provide field of view almost 8 arc minutes in diameter with scale just under 0.5 seconds per pixel. The instrument cooled by double liquid helium nitrogen cryostat. Using collimated beam about 26 mm diameter, low resolution spectroscopic mode also available using direct-ruled KRS5 grisms fixed slits either 1" or 2" width...
In preparation of the 2020 Astrophysics Decadal Survey, National Aeronautics and Space Administration (NASA) has commenced a process for astronomical community to study several large mission concepts leveraging lessons learned from past Surveys. This will enable Survey committee make more informed recommendations NASA on its astrophysics science priorities with respect cost risk. Four were identified. Each them had Science Technology Definition Teem (STDT) chartered produce scientifically...
This research sought to gauge the extent which doctors, nurses and paramedics in Australia were concerned about contracting SARS-CoV-2 during country's first wave of virus April 2020.Australian registered (n=580) completed an online questionnaire 16-30, 2020 (period immediately following highest four-week period (first wave) confirmed cases Australia).During 2020, two-thirds participants felt it was likely they would contract at work. Half suggested Personal Protective Equipment (PPE)...
Highly efficient Volume phase holographic (VPH) gratings do not lend themselves to use in existing spectrographs except for grism where VPH grisms can be designed that disperse but deviate the light. We discuss our program outfit [the Imaging instrument (IGI) on McDonald Observatory Smith Reflector, and Hobby-Eberly Telescope Marcario Low Resolution Spectrograph (LRS)] with grisms. present test data sample from Ralcon Development Lab, compare them theoretical predictions. have created a...
HIPO is a special purpose science instrument for SOFIA that was also designed to be used Observatory test work. It in series of flights from June December 2011 as part the Characterization and Integration (SCAI) flight program. Partial commissioning co-mounted HIPO-FLITECAM (FLIPO) configuration were included within scope SCAI The measurements such things optical throughput, image size shape function wavelength exposure time, motion assessment over wide frequency range, scintillation noise,...
Results are presented from a pilot survey of 3.3 micron PAH emission planetary nebulae using FLITECAM, an instrument intended for airborne astronomy with SOFIA. The observations were made during ground-based commissioning FLITECAM's spectroscopic mode at the 3-m Shane telescope Lick Observatory. Direct-ruled KRS-5 grisms used to give resolving power (R)~1,700. Targets selected IRAS, KAO and ISO sources previously observed longer wavelengths. AGB stars PN C/O ratios < 1 also added target...
FLITECAM is a 1-5 micron spectrometer and camera developed at UCLA for NASA's Stratospheric Observatory Infrared Astronomy (SOFIA). On SOFIA, will take advantage of lower backgrounds from 3-5 microns provide access to spectral regions completely or partially absorbed by water vapor even the best ground-based sites. employs large cryogenic optics an ALADDIN III 1024 × InSb detector inscribe 8 arcminute field view with 0.48 arcsec/pixel spatial resolution. The optical components are cooled...
The Stratospheric Observatory for Infrared Astronomy (SOFIA) has recently concluded a set of engineering flights performance evaluation. These in-flight opportunities have been viewed as first comprehensive assessment the Observatory's and will be used to address development activity that is planned 2012, well identify additional upgrades. A series 8 SOFIA Characterization And Integration conducted from June December 2011. HIPO science instrument in conjunction with DSI Super Fast Diagnostic...
We present a status report and early commissioning results for FLITECAM, the 1-5 micron imager spectrometer SOFIA (the Stratospheric Observatory Infrared Astronomy). In February 2014 we completed six flights with FLITECAM mounted in FLIPO configuration, co-mounting of HIPO (High-speed Imaging Photometer Occultations; PI Edward W. Dunham, Lowell Observatory). During these flights, modes from ~1-4 μm were characterized. Since observatory verification 2011, several improvements have been made...
FLITECAM, a near-infrared instrument being developed at the UCLA Infrared lab, will be first light infrared for NASA's SOFIA aircraft. In addition to its imaging capability, FLITECAM has been equipped with three direct-ruled KRS-5 grisms, allowing observations in 9 spectral bands, and giving nearly continuous coverage from 1 5.5 microns. The design favors regions of spectrum that are heavily attenuated except high altitudes. grisms used dual-width long slit yield resolution R~1700 R~900 low...
This paper describes the current status of FLITECAM, near-infrared (1 - 5 μm) camera and spectrometer for NASA's Stratospheric Observatory Infrared Astronomy (SOFIA). Due to a change in schedule FLITECAM's delivery was advanced, allowing it be co-mounted with HIPO instrument used on four flights October 2011 observatory verification. Although not part commissioning time, some preliminary performance characteristics were determined. Image size as function wavelength measured prior...
The James Webb Space Telescope, an infrared-optimized space telescope being developed by NASA for launch in 2014, will utilize cutting-edge detector technology its investigation of fundamental questions astrophysics. JWST's near infrared spectrograph, NIRSpec utilizes two 2048 × HdCdTe arrays with Sidecar ASIC readout electronics Teledyne to provide spectral coverage from 0.6 microns 5 microns. We present recent test and calibration results the "pathfinder subsystem" as well data processing...
Whitepaper #263 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: infrastructure/workforce/other programmatic. Additional state of profession; space-based missions/projects; research tools infrastructure.
The Stratospheric Observatory for Infrared Astronomy (SOFIA) is the world's largest airborne observatory, featuring a 2.5 meter effective aperture telescope housed in aft section of Boeing 747SP aircraft. SOFIA's current instrument suite includes: FORCAST (Faint Object InfraRed CAmera SOFIA Telescope), 5-40 μm dual band imager/grism spectrometer developed at Cornell University; HIPO (High-speed Imaging Photometer Occultations), 0.3-1.1μm imager built by Lowell Observatory; GREAT (German...
The James Webb Space Telescope (Webb) is the largest space telescope realized to-date, with a 6.5 m segmented primary mirror that must be folded to fit within its Ariane 5 launcher fairing. This infrared passively cooled using five-layer sunshield will keep optical and four science instruments in shade throughout lifetime of mission an L2 orbit. Webb's include near- mid- imagers spectrometers cover spectral range from 0.6-28.5 μ.m has long history numerous first kind technology developments,...
Here we present the results of an airborne 3-5.4$\mu$m spectroscopic study three young, Carbon-rich planetary nebulae IC 5117, PNG 093.9-00.1, and BD $+$30 3639. These observations were made using grism spectroscopy mode FLITECAM instrument during science operations onboard NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA). The goal this is to characterize 3.3 $\mu$m 5.25 PAH dust emission in evolution features within evolved stars before their incorporation into new stellar...
We outline specific steps that NASA and the space science community can take to advance collaboration coordination between communities represented by four Science Mission Directorate Divisions. It is important note only way this effort succeed if initiates supports it through directed resources.
The Stratospheric Observatory for Infrared Astronomy (SOFIA) is an airborne observatory, carrying a 2.5 m telescope onboard heavily modified Boeing 747SP aircraft. SOFIA optimized operation at infrared wavelengths, much of which obscured ground-based observatories by atmospheric water vapor. science instrument complement consists seven instruments: FORCAST (Faint Object InfraRed CAmera the Telescope), GREAT (German Receiver Terahertz Frequencies), HIPO (High-speed Imaging Photometer...
The contents of this material reflect the views author and/or Director Center for Advanced Aviation System Development. Neither Federal Administration nor Department Transportation makes any warranty or guarantee, promise, expressed implied, concerning content accuracy herein.
Abstract We have performed a study of 3.3 micron PAH emission in planetary nebulae using ground-based observations with FLITECAM, one suite instruments designed for airborne astronomy aboard SOFIA, NASA's Stratospheric Observatory Infrared Astronomy. The survey was on the Shane 3 meter telescope at Lick as part commissioning FLITECAM grism spectroscopy mode. Spectral resolution R ~ 1700 obtained direct-ruled KRS-5 grisms. Targets included AGB stars and sources showing KAO, ISO or IRAS...
The James Webb Space Telescope (JWST) is a NASA flagship mission that will address multiple science themes including our Universe's first light, the assembly of galaxies, birth stars and planetary systems, planets origins life. JWST large (6.5 m) segmented aperture telescope equipped with near- mid-infrared instruments (0.6-28 microns), all which are passively cooled to ~40 K by 5-layer sunshield while instrument actively 7 K. be launched an L2 orbit aboard European Agency (ESA) supplied...