CHIPS (satellite)

Short description: NASA satellite of the Explorer program

Cosmic Hot Interstellar Plasma Spectrometer

CHIPS (Explorer 82) satellite

Names| Explorer 82
UNEX-2
CHIPS
Mission type| Extreme ultraviolet research
Operator| NASA / Space Sciences Laboratory
COSPAR ID| 2003-002B
SATCAT no.| 27643
Website| CHIPS
Mission duration| 1 year (planned)
5 years, 3 months (achieved)
Spacecraft properties
Spacecraft| Explorer LXXXII
Spacecraft type| Cosmic Hot Interstellar Plasma Spectrometer
Bus| CHIPS
Manufacturer| SpaceDev
Launch mass| 60 kg (130 lb)
Dimensions| 5 × 2.8 × 3.2 m (16.4 × 9.2 × 10.5 ft)
Start of mission
Launch date| 13 January 2003, 00:45:00 UTC
Rocket| Delta II 7320-10 (Delta 294)
Launch site| Vandenberg, SLC-2W
Contractor| Boeing Launch Services
Entered service| 2003
End of mission
Deactivated| 11 April 2008
Orbital parameters
Reference system| Geocentric orbit[1]
Regime| Low Earth orbit
Perigee altitude| 578 km (359 mi)
Apogee altitude| 594 km (369 mi)
Inclination| 94.05°
Period| 96.40 minutes

Explorer program

<- RHESSI (Explorer 81)

GALEX (Explorer 83) ->

CHIPS (Cosmic Hot Interstellar Plasma Spectrometer, also Explorer 82 or UNEX-2) was a NASA Explorer program satellite. It was launched on 12 January 2003 from Vandenberg Air Force Base aboard a Delta II with the larger satellite ICESat, and had an intended mission duration of one year. CHIPS was the second of NASA's University Explorer (UNEX) mission class. It performed spectroscopy from 90 to 250 Angstrom (9 to 26-nm) extreme ultraviolet (EUV) light.[2]

## Contents

* 1 Mission
* 2 Spacecraft
* 3 Launch
* 4 Solar observatory
* 5 End of mission
* 6 See also
* 7 References
* 8 External links

## Mission

The primary objective of the science team, led by principal investigator Mark Hurwitz, was to study the million-degree gas in the local interstellar medium. CHIPS was designed to capture the first spectra of the faint, extreme ultraviolet glow that is expected to be emitted by the hot interstellar gas within about 300 light-years of the Sun, a region often referred to as the Local Bubble. Surprisingly, these measurements produced a null result, with only very faint EUV emissions detected, despite theoretical expectations of much stronger emissions. It was the first U.S. mission to use TCP/IP for end-to-end satellite operations control.

## Spacecraft

The University of California, Berkeley's Space Sciences Laboratory (SSL) served as CHIP's primary ground station and manufactured the CHIPS spectrograph, designed to perform all-sky spectroscopy. Other ground network support was provided by ground stations at Wallops Flight Facility (WFF), Virginia and Adelaide, Australia. CHIPS's satellite bus was manufactured by SpaceDev.

## Launch

CHIPS (Cosmic Hot Interstellar Plasma Spectrometer) is a NASA astrophysics spacecraft that was launched by a Delta II launch vehicle from Vandenberg Air Force Base at 00:45:00 UTC on 13 January 2003.[1] The 60 kg (130 lb), triaxially-stabilized spacecraft has a spectrograph covering the 9-26 nm wavelength band at a resolution of 0.1 nm, scanning the entire sky in chunks of 5° x 27° segments during each orbit. The targets are the hot and diffuse nebula at about a million degrees temperature. The band covers several strong emission lines.[3]

## Solar observatory

In September 2005, the spacecraft was converted to a solar observatory.[4] From 3 April 2006 to 5 April 2008, CHIPS performed 1458 observations of the Sun.[5]

## End of mission

Satellite operations were terminated in 11 April 2008 due to budget constraints.[6]

## See also

* Explorer program
* Extreme ultraviolet

## References

1. ↑ 1.0 1.1 "Trajectory: CHIPS (Explorer 82) 2003-002B". NASA. 28 October 2021. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/displayTrajectory.action?id=2003-002B. This article incorporates text from this source, which is in the public domain.
2. ↑ Cosmic Hot Interstellar Plasma Spectrometer
3. ↑ "Display: CHIPS (Explorer 82) 2003-002B". NASA. 28 October 2021. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2003-002B. This article incorporates text from this source, which is in the public domain.
4. ↑ "CHIPS Latest News". http://chips.ssl.berkeley.edu/news.html.
5. ↑ CHIPS Solar Science Archive
6. ↑ Sanders, Robert (2 June 2008). "06.02.2008 - Low-cost EUV satellite shut down". https://newsarchive.berkeley.edu/news/media/releases/2008/06/02_chips.shtml.

## External links

* "Good-bye Mr. CHIPS" Chris Thompson, East Bay Express, 2 July 2008
* "CHIPS, the Cosmic Hot Interstellar Plasma Spectrometer". University of California, Space Sciences Laboratory. http://chips.ssl.berkeley.edu/.
* "Two Years of EUV Observations with the Cosmic Hot Interstellar Plasma Spectrometer". University of California, Space Sciences Laboratory. http://chips.ssl.berkeley.edu/AAS200512abstract.txt.
* "SpaceDev Small Satellites". SpaceDev. http://www.spacedev.com/spacedev_micro_nano_sats.php.

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Explorers Program

List of Explorers Program missions

Missions|

| 1958–1992|

* Explorer 1
* 2†
* 3
* 4
* 5†
* S-1†
* 6 (S-2)
* 7 (S-1A)
* S-46A†
* 8
* S-56†
* 9 (S-56A)
* S-45†
* 10
* 11 (S-15)
* S-45A†
* S-55†
* 12 (EPE-A)
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* 15 (EPE-C)
* 16 (S-55B)
* 17 (AE-A)
* 18 (IMP-A)
* 19 (AD-A)
* S-66A (BE-A)†
* 20 (IE-A)
* 21 (IMP-B)
* 22 (BE-B)
* 23 (S-55C)
* 24 (AD-B)
* 25 (Injun 4, IE-B)
* 26 (EPE-D)
* 27 (BE-C)
* 28 (IMP-C)
* 29 (GEOS-A)
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* 31 (DME-A)
* 32 (AE-B)
* 33 (IMP-D)
* 34 (IMP-F)
* 35 (IMP-E)
* 36 (GEOS-B)
* 37 (Solrad 9)
* 38 (RAE-A)
* 39 (AD-C)
* 40 (Injun 5)
* 41 (IMP-G)
* 42 (Uhuru, SAS-A)
* 43 (IMP-H)
* 44 (Solrad 10)
* 45 (SSS-A)
* 46 (MTS)
* 47 (IMP-I)
* 48 (SAS-B)
* 49 (RAE-B)
* 50 (IMP-J)
* 51 (AE-C)
* 52 (Hawkeye 1)
* 53 (SAS-C)
* 54 (AE-D)
* 55 (AE-E)
* DADE-A†
* DADE-B†
* 56 (ISEE-1)
* 57 (IUE)
* 58 (HCMM)
* 59 (ICE)
* 60 (SAGE)
* 61 (Magsat)
* 62 (DE-1)
* 63 (DE-2)
* 64 (SME)
* 65 (CCE)
* 66 (COBE)
* 67 (EUVE)

|

MIDEX|

* 69 (RXTE)
* 71 (ACE)
* 77 (FUSE)
* 78 (IMAGE)
* 80 (WMAP)
* FAME
* 84 (Swift)
* 85–89 (THEMIS)
* 92 (WISE)
* 95 (TESS)
* 96 (ICON)
* SPHEREx

SMEX|

* 68 (SAMPEX)
* 70 (FAST)
* 73 (TRACE)
* 74 (SWAS)
* 75 (WIRE)†
* 81 (RHESSI)
* 83 (GALEX)
* 90 (AIM)
* 91 (IBEX)
* 93 (NuSTAR)
* 94 (IRIS)
* GEMS
* IXPE
* PUNCH
* TRACERS

UNEX/MO/I|

* HETE-1†
* 72 (SNOE)
* 76 (TERRIERS)†
* 79 (HETE-2)
* INTEGRAL
* 82 (CHIPSat)
* CINDI
* Suzaku
* TWINS
* Hitomi†
* NICER
* GOLD
* XRISM
* GUSTO
* CASE

Proposals|

| Proposals|

* FINESSE
* Arcus
* OHMIC
* ASTRE
* EXCEDE

|

* Green titles indicates active current missions
* Grey titles indicates cancelled missions
* Italics indicate missions yet to launch
* Symbol † indicates failure en route or before intended mission data returned

* v
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* e

Space observatories

Operating|

* AGILE (since 2007)
* AMS-02 (since 2011)
* Aoi (since 2018)
* ASTERIA (since 2017)
* Astrosat (since 2015)
* BRITE constellation (since 2013)
* CALET (since 2015)
* Chandra (AXAF) (since 1999)
* DAMPE (since 2015)
* Fermi (since 2008)
* Gaia (since 2013)
* HXMT (Insight) (since 2017)
* Hinode (Solar-B) (since 2006)
* HiRISE (since 2005)
* Hisaki (SPRINT-A) (since 2013)
* Hubble (since 1990)
* INTEGRAL (since 2002)
* IBEX (since 2008)
* IRIS (since 2013)
* ISS-CREAM (since 2017)
* MAXI (since 2009)
* Mikhailo Lomonosov (since 2016)
* Mini-EUSO (since 2019)
* NCLE (since 2018)
* NEOSSat (since 2013)
* NICER (since 2017)
* NuSTAR (since 2012)
* Odin (since 2001)
* SDO (since 2010)
* SOHO (since 1995)
* SOLAR (since 2008)
* Spektr-RG (since 2019)
* Spitzer (since 2003)
* STEREO (since 2006)
* Swift (since 2004)
* TESS (since 2018)
* WISE (since 2009)
* XMM-Newton (since 1999)

Planned|

* CHEOPS (2019)
* iWF-MAXI (2019)
* Astro-1 Telescope (2020)
* ILO-1 (2020)
* LUCI (2020)
* Nano-JASMINE (2020)
* ORBIS (2020)
* Solar Orbiter (SolO) (2020)
* IXPE (2021)
* James Webb (JWST) (2021)
* LORD (2021)
* SVOM (2021)
* XPoSat (2021)
* Euclid (2022)
* Space Solar Telescope (2022)
* XRISM (2022)
* Xuntian (2022)
* K-EUSO (2023)
* Solar-C (2023)
* SPHEREx (2023)
* Small-JASMINE (2024)
* Near-Earth Object Surveillance Mission (2025+)
* Spektr-UV (2025)
* WFIRST (2025+)
* PLATO (2026)
* LiteBIRD (2027)
* ARIEL (2028)
* Spektr-M (2030+)
* ATHENA (2031)
* LISA (2034)

Proposed|

* Arcus
* AstroSat-2
* EXCEDE
* Fresnel Imager
* FOCAL
* HabEx
* Hibari
* Hypertelescope
* JEM-EUSO
* LUVOIR
* ATLAST
* HDST
* Lynx
* Nautilus Deep Space Observatory
* New Worlds Mission
* NRO donation to NASA
* OST
* PhoENiX
* Solar-D
* SPICA
* THEIA
* THESEUS

Retired|

* Akari (Astro-F) (2006–2011)
* ALEXIS (1993–2005)
* Alouette 1 (1962–1972)
* Ariel 1 (1962, 1964)
* Ariel 2 (1964)
* Ariel 3 (1967–1969)
* Ariel 4 (1971–1972)
* Ariel 5 (1974–1980)
* Ariel 6 (1979–1982)
* ATM (1973–1974)
* ASCA (Astro-D) (1993–2000)
* Astro-1 (1990)
* BBXRT
* HUT
* Astro-2 (HUT) (1995)
* Astron (1983–1989)
* ANS (1974–1976)
* BeppoSAX (1996–2003)
* CHIPSat (2003–2008)
* Compton (CGRO) (1991–2000)
* CoRoT (2006–2013)
* Cos-B (1975–1982)
* COBE (1989–1993)
* DXS (1993)
* EPOCh (2008)
* EPOXI (2010)
* Explorer 11 (1961)
* EXOSAT (1983–1986)
* EUVE (1992–2001)
* FUSE (1999–2007)
* Kvant-1 (1987–2001)
* GALEX (2003–2013)
* Gamma (1990–1992)
* Ginga (Astro-C) (1987–1991)
* Granat (1989–1998)
* Hakucho (CORSA-b) (1979–1985)
* HALCA (MUSES-B) (1997–2005)
* HEAO-1 (1977–1979)
* Herschel (2009–2013)
* Hinotori (Astro-A) (1981–1991)
* HEAO-2 (Einstein Obs.) (1978–1982)
* HEAO-3 (1979–1981)
* HETE-2 (2000–2008)
* Hipparcos (1989–1993)
* IUE (1978–1996)
* IRAS (1983)
* IRTS (1995–1996)
* ISO (1996–1998)
* IXAE (1996–2004)
* Kepler (2009–2018)
* Kristall (1990–2001)
* LEGRI (1997–2002)
* LISA Pathfinder (2015–2017)
* MOST (2003–2019)
* MSX (1996–1997)
* OAO-2 (1968–1973)
* OAO-3 (Copernicus) (1972–1981)
* Orbiting Solar Observatory
* OSO 1
* OSO 2/OSO B
* OSO 3
* OSO 4
* OSO 5
* OSO 6
* OSO 7
* OSO 8
* Orion 1 (1971)
* Orion 2 (1973)
* PAMELA (2006–2016)
* PicSat (2018)
* Planck (2009–2013)
* RELIKT-1 (1983–1984)
* R/HESSI (2002–2018)
* ROSAT (1990–1999)
* RXTE (1995–2012)
* SAMPEX (1992–2004)
* SAS-B (1972–1973)
* SAS-C (1975–1979)
* Solwind (1979–1985)
* Spektr-R (2011–2019)
* Suzaku (Astro-EII) (2005–2015)
* Taiyo (SRATS) (1975–1980)
* Tenma (Astro-B) (1983–1985)
* Uhuru (1970–1973)
* Vanguard 3 (1959)
* WMAP (2001–2010)
* Yokoh (Solar-A) (1991–2001)

Hibernating
(Mission completed)|

* SWAS (1998–2005)
* TRACE (1998–2010)

Lost|

* OAO-1 (1966)
* OAO-B (1970)
* CORSA (1976)
* OSO C (1965)
* ABRIXAS (1999)
* HETE-1 (1996)
* WIRE (1999)
* Astro-E (2000)
* Tsubame (2014–2015)
* Hitomi (Astro-H) (2016)

Cancelled|

* AOSO
* Astro-G
* Constellation-X
* Darwin
* Destiny
* EChO
* Eddington
* FAME
* FINESSE
* GEMS
* HOP
* IXO
* JDEM
* LOFT
* OSO J
* OSO K
* Sentinel
* SIM & SIMlite
* SNAP
* SPOrt
* TAUVEX
* TPF
* XEUS
* XIPE

See also|

* Great Observatories program
* List of space telescopes
* List of proposed space observatories
* List of X-ray space telescopes

* Category

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*[no.]: number
*[v]: View this template
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*[MIDEX]: Medium-Class Explorers
*[UNEX]: University-class Explorers
*[MO]: Missions of Opportunity
*[I]: International Missions