Focloir f

From South Dublin Astronomical Society

Fabry lens lionsa m4 Fabry
face-on position treo m4 na haghaidhe

faculae spl facalaigh mpl
fade-outs spl céimnithe mpl as
falling star (= meteor, shooting star) réalta f4 reatha

families of comets clanna fpl cóiméad
F-corona s F-choróin f (gs -ónach)

Fechner's law dlí m4 Fechner
field curvature cuaire f4 réimse
field of galaxies réimse m4 réaltraí

field of view réimse m4 radhairc
Filamentary nebula, the réaltnéal m1 an Fhiliméid
filaments spl filiméid mpl

filar micrometer micriméadar m1 snáithíneach
filter s scagaire m4
finder s aimsitheoir m3

finder scope scóp m1 aimsithe
fine dust deannach m1 mín
fireball s (= bolide) caor f2 thine

First Point of Aries (= vernal equinox) Túsphointe m4 Aries
First Point of Libra (= autumn equinox) Túsphointe m4 Libra
first quarter (of lunar phase) i mbéal ceathrún

Fishes, the spl (= Pisces) (Const.) na hÉisc mpl
fission theory teoiric f2 an eamhnaithe

fixed star réalta f4 sheasta
flare s (= solar flare, solar eruption) bladhm f3
flare emission astú m bladhma

flare star bladhmréalta f4
flash spectrum splancspeictream m1
F-layers spl F-chisil mpl

flint glass gloine f4 bhreochloiche
flocculus s flocas m1
flood tide taoide f4 thuile

fluorescence s fluaraiseacht f3
Fly, the s (= Musca) (Const.) an Chuileog f2

Flying Fish, the (= Piscis Volans, Volans) (Const.) an tIasc m1 Eitilte
f-number s f-uimhir f (gs -mhreach)

focal distance (= focal length) fad m1 fócasach
focal length (= focal distance) fad m1 fócasach
focal plane plána m4 fócasach

focal point (= focus) pointe m4 fócasach
focal surface dromchla m4 fócasach
focus s (= focal point) fócas m1

focus ring (on binoculars) roth m3 fócais
Fomalhaut s (Star) Fomalhaut m4

forbidden lines línte fpl toirmiscthe
Forbush effect iarmhairt f3 Forbush
force s fórsa m4

fork mounting gabhalghléasadh m (gs -sta)
formation s foirmiú m (gs -ithe)

Fornax s (= the Furnace) (Const.) Fornax f4
Foucault knife-edge test (= Foucault mirror test) triail f scátháin Foucault

Foucault mirror test (= Foucault knife-edge test) triail f scátháin Foucault
Foucault pendulum luascadán m1 Foucault
Fox, the s (= Vulpecula) (Const.) an Sionnach m1

Franklin-Adams chart cairt f2 Franklin-Adams
Fraunhofer lines línte fpl Fraunhofer
free fall saorthitim f2

French Republican calendar féilire m4 Phoblacht na Fraince
frequency s minicíocht f3
fringe region réigiún m1 imeallach

F stars spl F-réaltaí fpl
full moon gealach f2 lán
fundamental catalogue catalóg f2 bhunúsach

fundamental stars réaltaí fpl bunúsacha
fundamental theorem of stellar statistics bunteoirim f2 staitisticí réaltacha
Furnace, the s (= Fornax) (Const.) an Fhoirnéis f2

fusion reaction imoibriú m comhleá