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Astronomy glossary
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Telescope Abbreviations

AbbreviationMeaning
AchroAchromatic Refractor
AFOVApparent Field of View
Alt-AzAlt-azimuth mount
APAstro Photography
ApoApochromatic refractor telescope
CAChromatic Aberration
CaKCalciun K-line filter
CassCassegrain Telescope
CatCatadioptric telescope
CMOSComplementary metal-oxide-semiconductor
CCDCharge-Coupled Device
CWCounterweight
DecDeclination
DobDobsonian telescope
DSCDigital setting circle
DSODeep Sky Object
EDExtra-low dispersion glass
EPEyepiece or Ocular
EQEquatorial mount
fFocal number
FLFocal Length
FOVfield of view
FracSlang for Refractor
GEMGerman Equatorial Mount
GotoComputer-controlled, motorised telescope
H-alpha, H-AHydrogen Alpha (filter)
HSTHubble Space Telescope
LP, LPRlight pollution reduction (filter)
MakMaksutov telescope
MCTMaksutov-Cassegrain telescope
MNTMaksutov-Newtonian telescope
NDNeutral density (filter)
NewtNewtonian telescope
NCPNorth Celestial Pole
O-IIIOxygen-III (filter)
OTOptical Tube
OTAOptical tube assembly
PASPolar Alignment Scope
RARight Ascension
SCPSouth Celestial Pole
SCTSchmidt-Cassegrain telescope
SloMoSlow Motion Cable on a mount
UHCUltra High Contrast (filter)
UHTCUltra-high transmission coating
UTUniversal Time
VVisual magnitude
ZZulu

 



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X-ray transient
X-ray emission occurs from many celestial objects. These emissions can have a pattern, occur intermittently, or as a transient astronomical event.

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Star catalogues
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AC+ Astrographic
ADS Aitken Double Stars
BD Bonner Durchmusterung
Flamsteed and Constellation
Greek Letter Bayer
GJ Gliese-Jahreiss
Gl Gliese
Groombridge Groombridge
HIP Hipparcos
HD Henry Draper
Luyten Luyten (LTT),  Revised Luyten Half-Second (LHS) 
LP Luyten-Palomar
RECONS Research Consortium on Nearby Stars
Ross Ross
SAO Smithsonian Astron. Obs.
Struve Struve
Wolf Wolf



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Galaxy Catalogue Prefixes
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AM Arp and Madore
ARAK Arakelian Catalogue of Galaxies
Arp Arp's Catalogue of Peculiar Galaxies
DCL Dickens, Currie, Lucey
DRCG Dressler Catalogue of Galaxy Clusters
ESO European Southern Observatory
HCG Hickson Galaxy Group
IC Index Catalogue of Nebulae and Star Clusters
IRAS Infrared Astronomical Satellite
M Messier Catalogue of Nebulae and Star Clusters
MCG Morphological Catalogue of Galaxies
NGC New General Catalogue
PGC Catalogue of Principal Galaxies
RB Rood, Baum (Abell galaxies)
UGC Uppsala Galaxy Catalogue
ZWG Zwicky's Catalogue of Galaxies and Clusters of Galaxies


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ASTRONOMICAL VALUES
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ASTRONOMICAL VALUES

Ave. Distance

To Sun


Mercury


Venus


Earth


Mars


Jupiter


Saturn


Uranus


Neptune

AU

0.387

0.723

1

1.524

5.203

9.54

19.19

30.07


Kilometers

57.90

Million

108.2

Million

149.60

Million

227.9

Million

778.4

Million

1.427

Billion

2.871

Billion

4.498

Billion


Miles

35.97

Million

67.23

Million

92.956

Million

141.6

Million

483.7

Million

886.5

Million

1.784

Billion

2.795

Billion

Light-Travel

Units

3.22

Lt Min

6.01

Lt Min

8.32

Lt Min

12.66

Lt Min

43.3

Lt Min

1.32

Lt Hr

2.66

Lt Hr

4.17

Lt Hr




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ASTRONOMICAL VALUES



Kilometers

Miles

Rearth

Rsun

AU

Lt Min

Lt Yr

Parsec

1 Kilometer

1

0.6213712







1 Mile

1.609344

1







1 Rearth

6,378.1

3,963.2

1

0.0092





1 Rsun

696,000

432,474

109.12

1

0.00465




1 AU

149.60 x 106

92.956 x 106


214.9

1

8.3168



1 Light Sec

299,792.5

186,282.4


0.431

0.00020

0.0167



1 Light Min

17.987 x 106

11.177 x 106


25.844

0.1202

1



1 Light Hr

1.079 x 109

67.062 x 107

 

7.214

60

 


1 Light Yr

9.461 x 1012

5.879 x 1012



63,240

525,949

1

0.3066

1 Parsec

30.857 x 1012

19.173 x 1012



206,260

 

3.2616

1




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RE: Astronomy glossary
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AU - Astronomical Unit - The mean distance from the Earth to the Sun  -  93 Million miles, or 149,597,871 kilometres.

The  distance from Earth to the Sun is 1.0 AU.

The distance from Earth to the Moon is 0.00256 AU, or 1 Lunar Distance (LD ) or 384,401 km.

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Forum Acronyms and Abbreviations

\o/ - Hands up in praise or joy
AAMOF - as a matter of fact
AAS - American Astronautical Society
ACS - Attitude Control System
AF    -   Air Force
AFAIK - as far as I know
AGB    - Asymptotic Giant Branch
AGE -    Auxiliary Ground Equipment
AGN  -   Active Galactic Nucleus
AGU  -  American Geophysical Union
AIAA  -  American Institute of Aeronautics and Astronautics
AIPS  -  Astronomical Image Processing System
AIRS  -  Atmospheric Infrared Sounder
ALSEP - Apollo Lunar Surface Experiment Package
APOD - Astronomy Picture of the Day
AU - astronomical unit
BB - Big Bang
BBT - Big Bang Theory
BH - black hole
BIS - British Interplanetary Society
BTW - by the way
c - speed of light in a vacuum
CCD             Charge-Coupled Device
CEO - close Earth orbit
CETI - Communication with Extraterrestrial Intelligence
CM - Command Module
CSM - Command/Service Module
CT - Conspiracy Theories/conspiracy theorist
Dec - Declination
DoD - Department of Defence
E - Elliptical (for galaxies)
EAFB  - Edwards Air Force Base
EDL - entry, descent, and landing
ESA - European Space Agency
EVA - extravehicular activity
FWIW - for what it's worth
G - universal gravitational constant
g - acceleration due to gravity at the Earth's surface
GEO - Geosynchronous Earth Orbit
GMT - Greenwich Mean Time
GO - geostationary orbit
GR - General Relativity
GRB - Gamma Ray Burst
GRS - Great Red Spot
GSO - geosynchronous orbit
GTR - General Theory of Relativity
GUT - grand unified theory
HEO - highly elliptical orbit
IAU - International Astronomical Union
ICBM - intercontinental ballistic missile
ID - intelligent design
IIRC - if I remember/recall correctly
IMHO - in my humble opinion
IMO - in my opinion
IR - infrared
ISS - International Space Station
JPL - Jet Propulsion Laboratory
JSC - Johnson Space Centre
KSC - Kennedy Space Centre
LEO - low Earth orbit
LLRE - Lunar Laser Ranging Experiment
LRRR - Lunar Ranging Retro-Reflector
LM - Lunar Module
LMC - Large Magellanic Cloud
LOX -  Liquid OXygen
LRV - Lunar Roving Vehicle
MECO - Main Engine CutOff
MEO - medium Earth orbit
MMU - manned manoeuvring unit
MoD - Ministry of Defence
MOND - Modified Newtonian Dynamics
MSFC - Marshall Space Flight Centre
NASA - National Air and Space Administration
NORAD - North American Air Defence Command
OMS - Orbital Manoeuvring System
OP - Original Post (also Original Poster)
OTOH - on the other hand
PAO - Public Affairs Officer
Q&A - Questions and Answers
QSO - Quasi-Stellar Object
RA  - Right Ascension
RAF - Royal Air Force
RLV - reusable launch vehicle
SECO  -  Sustainer Engine Cutoff
SETI - Search for Extraterrestrial Intelligence
SM - service module
SOHO -  SOlar Heliospheric Observatory
SR - Special Relativity
STR - Special Theory of Relativity
STS - Shuttle Transport System
TOE - theory of everything
UFO - unidentified flying object
USAF - United States Air Force
UT - Universal Time
UV - ultraviolet
VAB -  Vehicle Assembly Building (formerly Vertical Assembly Building)
VAFB - Vandenberg Air Force Base
VHF - Very High Frequency
VLA - Very Large Array
VLBA - Very Long Baseline Array
VLBI: - Very Long Baseline Interferometry
VLF - Very Low Frequency
VLT - Very Large Telescope
WD -     White Dwarf
ZHR - Zenith Hourly Rate

Read more



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L

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I have created a small astronomy glossary that will  explain some  basic astronomical terms.
It is intended for  quick reference for the beginner.
Scroll down the list or click on the Alphabetical letters at the top....

Read more

(159kb webpage)

-- Edited by Blobrana at 14:06, 2008-08-20

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