Enwere ụdị abụọ: telescope Galileo nwere oghere concave dị ka anya anya; Teliskop Kepler nwere oghere convex dị ka anya anya. Ụkpụrụ bụ isi nke telescopes Kepler bụ na ìhè si n'ebe dị anya na-abanye na oghere convex nke oghere ebumnuche, na ezigbo ihe oyiyi na-atụgharị ma na-ebelata maka oge mbụ, nke yiri igwefoto; mgbe ahụ, ezigbo ihe oyiyi a na-abanye na oghere convex nke eyepiece, na ihe oyiyi mebere na-eguzo ọtọ ma gbasaa maka oge nke abụọ. , Nke dabara na iko na-ebuli elu.
N'ihi na chromatic aberration na sppherical aberration nke otu oghere ebumnobi lens dị nnọọ njọ, telescopes nke oge a na-emegharị anya na-ejikarị abụọ ma ọ bụ karịa lens dị ka enyo ihe ọkụkụ. N'ime ha, oghere ebumnuche oghere abụọ (telescope nkịtị achromatic) bụ nke kachasị ewu ewu. Ọ na-agụnye oghere convex nke ejiri iko okpueze mee na oghere concave nke e ji enyo enyo mee nke dị ezigbo nso. A na-ekpochapụ aberration chromatic ọnọdụ kpamkpam maka ogologo wavelength abụọ akọwapụtara, yana enwere ike ibelata ọnọdụ chromatic aberration nke ogologo wavelength fọdụrụnụ.
Mgbe ụfọdụ ọnọdụ imewe zutere, enwere ike ikpochapụ akụkụ nke aberration na coma. N'ihi mmetụta nke mwepu chromatic aberration na ndị ọzọ aberrations, ndị ikwu oghere nke abụọ lens ebumnobi lens bụ obere, n'ozuzu 1/15-1/20, adịkarịghị karịa 1/7, na ohere a na-eji ele ihe adịghị nnukwu. . Lens ebumnobi nke oghere abụọ nwere oghere nke na-erughị 8 cm nwere ike ijikọ lensị abụọ ọnụ, nke a na-akpọ oghere nwere mkpuchi okpukpu abụọ, na oghere ebumnobi kewapụrụ okpukpu abụọ nke nwere oghere ụfọdụ na-adịghị mma. Ka iwelie oghere ikwu na mpaghara anya, enwere ike iji otu lens ebumnuche ọtụtụ oghere. Maka teliskop Galileo, ihe owuwu ahụ dị nnọọ mfe yana ọnwụ ike ọkụ dị obere. gbọmgbọm oghere oghere dị mkpụmkpụ ma dịkwa mfe. Ma ọ ziri ezi, ma ebe a na-ahụ ihe dị ntakịrị na-enwe ntakịrị ọnụọgụ, a na-ejikarị ya eme ihe ngosi ihe nkiri na teliskop ụmụaka. Maka teliskop Kepler, ọ dị mkpa ịgbakwunye otu prism ma ọ bụ lens n'azụ oghere ebumnobi iji tụgharịa ihe oyiyi ahụ ka anya wee hụ ihe dị mma. Igwe teliskop n'ozuzu na-anabata usoro Kepler. N'ihi na àgwà onyonyo nke telescopes na-atụgharị dị mma karịa igosipụta teliskop n'okpuru otu caliber, ebe a na-ahụ anya buru ibu, ọ dị mfe iji, ọ dịkwa mfe ilekọta. Igwe teliskop nke nta na nke ọkara na ọtụtụ ngwa pụrụ iche na-ejikarị sistemu emegharị ahụ, mana teliskop ndị na-emegharị emegharị na-esikarị ike imepụta karịa igosipụta teliskop. N'ihi na ọ bụ nnọọ ike gbazee elu-edu nnukwu-oghere anya m, na e nwere nsogbu nke iko absorption nke ìhè, na isi mirror oghere ga-deformed n'ihi ike ndọda, n'ihi na ogbenye ngwa anya àgwà, otú nnukwu-oghere teliskop bụ. niile na-egosipụta
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