Focloir o
From South Dublin Astronomical Society
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Dictionary based on the Foclóir Réalteolaíochta, An Gúm ISBN 185791175X.
Online at http://www.acmhainn.ie/tearmai/realt.htm
O-association s O-ghaolmhaireacht f3
Oberon s (Sat.) Oberon m4
object glass (= object lens, objective, objective lens) réadlionsa m4
objective s (= object glass, object lens, objective lens)
réadlionsa m4
objective grating gríl f2 réadlionsa
objective lens (= object glass, object lens, objective) réadlionsa m4
objective prism priosma m4 réadlionsa
object lens (= object glass, objective, objective lens) réadlionsa m4
oblateness s oblátacht f3
oblique ascension claonairde f4
obliquity s (= obliquity of the ecliptic) sceabhacht f3
observation s breathnú m (gs -naithe)
observational astronomy réalteolaíocht f3 bhreathnaitheach
observational work obair f2 bhreathnaitheach
observatory s réadlann f2
observer s breathnóir m3
occult v ceil (vn -t)
occultation s ceilt f2
Ocean of Storms (= Oceanus Procellarum) Aigéan m1 na Stoirmeacha
Oceanus Procellarum (= Ocean of Storms) Oceanus m4 Procellarum
O-cluster s O-réaltbhraisle f4
Octans s (= the Octant) (Const.) Octans m4
octant s ochtamhán m1
Octant, the s (= Octans) (Const.) an tOchtamhán m1
ocular s (= eyepiece) súil-lionsa m4
ocular spectroscope speictreascóp m1 súilí
Olbers' paradox paradacsa m4 Olbers
old style seanstíl f2
Omega Centauri (Star) Omega Centauri
Oort cloud scamall m1 Oort
Oort's constants tairisigh mpl Oort
Oort's formulae foirmlí fpl Oort
opacity s teimhneacht f3
opaque a teimhneach
open star cluster réaltbhraisle f4 oscailte
open universe cruinne f4 oscailte
Ophiuchus s (= the Serpent-bearer, Serpentarius) (Const.)
Ophiuchus m4
Ophiuchus nebula réaltnéal m1 Ophiuchus
opposition s urchomhaireacht f3
opposition of Mars urchomhaireacht f3 Mharsa
optical axis ais f2 optúil
optical components (of telescope) comhpháirteanna fpl
optúla
optical density dlús m1 optúil
optical depth doimhneacht f3 optúil
optical double star réalta f4 dhúbailte optúil
optical temperature teocht f3 optúil
optical window fuinneog f2 optúil
optic axis ais f2 optach
optics spl optaic f2
orbit s fithis f2
orbit v fithisigh
orbital elements (= elements of orbit) eilimintí fpl na fithise
orbital inclination claonadh m fithise
orbital velocity treoluas m1 fithiseach
orbit determination cinneadh m1 fithise
orbiter s fithiseoir m3
ordinate s ordanáid f2
origin s bunphointe m4
origin of the universe bunús m1 na cruinne
Orion s (Const.) Oiríon m4, an Bodach m1
Orion arm géag f2 Oiríon
Orion association gaolmhaireacht f3 Oiríon
Orionids spl (Met.Sh.) Oirínidí fpl
Orion nebula (= the Great Nebula in Orion) réaltnéal m1 Oiríon,
Buaile f4 an Bhodaigh
Orion's Belt (= Belt of Orion, the Hunter's Belt) Crios m3
Oiríon, an Bhanlámh f2, an Fhearsaid f2, Slat f2 an
Bhodaigh, Slat f2 an Cheannaí, Slat f2 an Rí
Orion's Sword (= Sword of Orion) (Neb.) Claíomh m1 Oiríon
orthochromatic plate pláta m4 ortacrómatach
oscillating universe cruinne f4 ascalach
oscillation s ascalú m (gs -laithe)
osculating element eilimint f2 shárthadhlach
osculating orbit fithis f2 shárthadhlach
osculation s sárthadhall m1
osculation epoch aga m4 sárthadhaill
O stars O-réaltaí fpl
outburst s (= burst) rois f2 (pl -eanna)
outer planet (= superior planet) pláinéad m1 lasmuigh
Owl nebula, the réaltnéal m1 an Ulchabháin
oxygen s ocsaigin f2
ozone s ózón m1
ozone layer (= ozonosphere) crios m3 ózóin
ozonosphere s (= ozone layer) ózónaisféar m1