scholarly journals Lessons Learned from the Hubble Space Telescope (HST) Contamination Control Program

2007 ◽  
Vol 50 (1) ◽  
pp. 44-60
Author(s):  
Patricia Hansen ◽  
Jacqueline Townsend ◽  
Randy Hedgeland
Keyword(s):  
Hubble Space Telescope ◽  
Control Program ◽  
Scientific Data ◽  
Lessons Learned ◽  
Space Telescope ◽  
Contamination Control ◽  
The Past ◽  
Integration Program ◽  
New Generation

Over the past two decades, the Hubble Space Telescope (HST) contamination control program has evolved from a ground-based integration program to a space-based science-sustaining program. The contamination controls from new-generation scientific instruments and orbital replacement units were incorporated into the HST contamination control program to maintain scientific capability over the life of the telescope. Long-term, on-orbit scientific data have shown that the contamination controls implemented for the instruments, servicing mission activities (Orbiter, astronauts, and mission), and on-orbit operations successfully protected the HST from contamination and the instruments from self-contamination.

Overview of the HST Contamination Engineering Program at 15 Years: A Cleanliness Metric for Success with Optical Satellites

2008 ◽  
Vol 51 (1) ◽  
pp. 18-32
Author(s):  
Patricia Hansen ◽  
Jacqueline Townsend ◽  
Randy Hedgeland
Keyword(s):  
Hubble Space Telescope ◽  
Control Program ◽  
Scientific Data ◽  
Optical Path ◽  
Scientific Instruments ◽  
Contamination Control ◽  
Engineering Program ◽  
The Past ◽  
Integration Program

Over the past two decades, the Hubble Space Telescope (HST) contamination control program has evolved from a ground-based integration program to a space-based science-sustaining program. On-orbit, the primary contamination requirement for the telescope was maintaining a low contamination flux in the optical path of the instrument. In addition, to maintain the scientific capability of the telescope, the contamination requirements and specific contamination controls from the second- and third-generation scientific instruments and orbital replacement units were captured within the HST contamination control program. Contamination controls involving the Orbiter, astronauts, and mission were developed for on-orbit operations and four servicing missions. Long-term on-orbit scientific data has shown that these contamination controls successfully protected the HST from contamination.

Hubble Space Telescope second servicing mission contamination control program

1996 ◽  
Author(s):  
Patricia A. Hansen ◽  
David W. Hughes ◽  
Jack J. Triolo ◽  
Glenn P. Rosecrans ◽  
Jack T. Sanders, Jr. ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Control Program ◽  
Space Telescope ◽  
Contamination Control

scholarly journals Measuring proper motions of galactic dwarf galaxies with Hubble Space Telescope

2007 ◽  
Vol 3 (S248) ◽  
pp. 244-247 ◽  
Author(s):  
S. Piatek ◽  
C. Pryor
Keyword(s):  
Research Group ◽  
Dwarf Galaxies ◽  
Hubble Space Telescope ◽  
Proper Motions ◽  
Future Directions ◽  
Space Telescope ◽  
The Past ◽  
Scientific Justification ◽  
Satellite Galaxies ◽  
Using Data

AbstractOver the past several years, our research group has been measuring proper motions for nearby dwarf satellite galaxies using data taken with the Hubble Space Telescope. In order to measure proper motions with an expected size of several tens of milliarcseconds per century using a time baseline of 2-4 years, our work required that positions of stars and QSOs be measured to an accuracy of ~0.25 mas (~0.005 pixel). This contribution reviews the scientific justification of this work and our methodology. It concludes with a few general results and future directions.

9. The next telescopes

2016 ◽  
pp. 122-138
Author(s):  
Geoff Cottrell
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Adaptive Optics ◽  
Hubble Space Telescope ◽  
Scientific Instrument ◽  
Space Telescope ◽  
James Webb Space Telescope ◽  
First Galaxies ◽  
New Generation ◽  
Optical Telescopes

Each question that telescopes have helped answer has led to new questions: what is dark matter and dark energy? How did the first galaxies form? Are there habitable, Earth-like exoplanets? To address these questions, a new generation of telescopes are being built. ‘The next telescopes’ describes some of these, including the three extremely large infrared/optical telescopes, equipped with adaptive optics systems, due to start operating in the next decade. Other new telescopes discussed are the Square Kilometre Array, a radio telescope that will soon be the world’s largest scientific instrument, and the James Webb Space Telescope due to be launched in 2018, which is the 100 times more powerful successor to the Hubble Space Telescope.

scholarly journals Distances to Planetary Nebulae

1989 ◽  
Vol 131 ◽  
pp. 65-72
Author(s):  
Julie H. Lutz
Keyword(s):  
Hubble Space Telescope ◽  
Planetary Nebulae ◽  
Significant Progress ◽  
Space Telescope ◽  
The Past ◽  
New Methods ◽  
Work Done

Finding distances to planetary nebulae remains a frustrating undertaking, but significant progress has been made over the past several years. This review covers primarily work done on distances since 1980, with some references to earlier papers. Some interesting new methods have been tried recently and some methods that have been used for years have been refined. Missions such as the Hubble Space Telescope and Hipparcos may provide new data on distances. Advances in ground-based telescopes and instruments will make possible new studies of distances.

Service observing and data quality control: some lessons learned from the Hubble Space Telescope

1998 ◽  
Author(s):  
Anuradha Koratkar ◽  
Ray A. Lucas ◽  
Stefano Casertano ◽  
Megan Donahue ◽  
F. Abney ◽  
...  
Keyword(s):  
Quality Control ◽  
Data Quality ◽  
Hubble Space Telescope ◽  
Lessons Learned ◽  
Data Quality Control ◽  
Space Telescope
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