Ib tug zoo khoom plig rau tus me nyuam xwb thiab tsis yog: lub tsom iav raj

Nrog lub abolition ntawm Lavxias teb sab tsev kawm ntawv ntawm astronomy yog tsawg dua thiab tsawg dua kawm tiav paub tsawg kawg yog ib yam dab tsi txog lub hnub qub. Tab sis tsis txhua yam yog solved paub, raws li cov neeg tseem xav mus saib nyob rau lub hnub qub, uas yog tag nrho cov nyob rau hauv tib lub ntxias nws unfathomable Romanticism. Tsuas yog ib tug nyias xov uas yuav NW nyuam qhuav coj peb los nyob ze rau cov luminaries, yog ib tug tsom iav raj. Ob peb cov neeg tsis tau ua npau suav raws li ib tug me nyuam ntawm no lub tsom iav raj, los ntawm kev uas ib tug yuav saib tau txhua txhua lub hnub qub thiab lub ntiaj teb. Koj muaj lub sij hawm los ua kom tiav qhov npau suav no, yog hais tias tsis rau lawv tus kheej, ces rau lawv cov me nyuam: mus yuav ib tug tsom iav raj rau lawv.

Yuav ua li cas los xaiv?

Uninitiated nyob rau hauv lub intricacies ntawm lub optics yog tsis yooj yim rau to taub cov qauv ntawm cov txawm yooj yooj yim binoculars, cia nyob ib leeg xws li ib tug complex ntsuas zoo li ib tug tsom iav raj. Tab sis lub point yog tias nws tsis yog tas li ntawd, npaum li cas paub thaum nws xaiv. Tej lub tsom iav raj muaj ob peb yam yooj yim cov yam ntxwv: lub lens txoj kab uas hla, lub magnification thiab lub lub cheeb ntawm lub tawm menyuam kawm ntawv.

Cov lus qhia los ntawm tej yam koj xaiv qauv, koj yuav nrhiav tau ib tug PostScript, xws li, 10x30, qhov twg 10 yog ib tug magnification, thiab 30 - lub lub cheeb ntawm lub lens. Lub multiplicity nyob feem nyob rau hauv ntau yam thiab zoo tshaj ntawm txoj kev ntsuam xyuas, tab sis chasing loj heev indices yog tsis tsim nyog, vim hais tias cov ntau dua qhov multiplicity, lub qis lub stability ntawm daim duab. Raws li ib tug tshwm sim, zoo heev multiplicity ntawm koj lub tsom iav raj cia li ntub duab.

Nyob rau hauv thiaj li yuav kom txawm peem rau qhov yuam kev no, siv ib tug loj inch lens. Raws li, qhov ntau dua nws yog, qhov ntau lub teeb nws tau txais, thiab lub sharper cov visibility ntawm nyob deb tej khoom. Sim xaiv cov ratios nyob rau hauv uas lub lens txoj kab uas hla tsis yog tsawg tshaj li peb mus rau plaub lub sij hawm ntau tshaj li qhov ratio. Nyob rau qhov no nyob rau hauv lub tom ntej no taw qhia ntawm tsis zoo.

Cov kab uas hla ntawm lub tawm tus menyuam kawm ntawv yog qhia nowhere, tab sis nws loj yuav tsum tau txiav txim los mus faib 30 los ntawm 10 (lub thib ob tooj mus rau tus thawj). Cov no ib tug 3 hli, thiab yog ib tug qhia ntawm lub tawm menyuam kawm ntawv. Optimum nws loj yuav tsum tsis muaj ntau tshaj li 4,25 thiab tsis tsawg tshaj li 3,50 hli, txwv tsis pub koj lub tsom iav raj yuav tsis ua kom muaj ib tug zoo daim duab ntawm lub cai khoom.

Cov feem nrov ntawm cov ob cov tub txawg thiab amateurs siv telescopes Yukon. Qhov no lub tuam txhab txhawb sib npaug ntawm tus nqi thiab zoo, muab lub feem ntau tsim nyog tus nqi rau cov neeg los yog lwm cov kev xaiv. Ntawm cov hoob kawm, muaj ntau ntau lwm yam tuam txhab uas muag, tab sis yog vim li cas raug qhov zoo los sis overpay rau ib tug loj lub npe?

Tsis txhob yuav fooled! Yog tsis muaj telescopes mus soj ntsuam cov saum ntuj ntawm lub hmo ntuj: heev me ntsis teeb nyob rau hauv kev txiav txim hais tias tus duab yog ib tug me ntsis crisp. Cuaj kaum khw muag khoom noj sellers feem ntau sim mus ua si nyob rau hauv lub inexperience ntawm lawv cov neeg muas zaub los ntawm qhia obviously nonexistent muaj nuj nqi. Yuav kawm txog cov kev cov yam ntxwv ntawm tus ntaus ntawv zoo zoo thiab tsis overpay rau ruaj nthuav dav.

Tam sim no uas koj paub yuav ua li cas xaiv ib tug zoo tsom iav raj, nws yog lub sij hawm mus ua dab tsi. Thiab nco ntsoov hais tias cov tsom iav raj - qhov no yog tsis yog ib lub cuab tam, nws yog nrog kev pab los ntawm cov uas koj tus kheej nco ntsoov thaum yau, kom muaj raws li lawv hlub heev npau suav. Nyob rau hauv tas li ntawd, koj muab koj cov me nyuam ib lub sij hawm, tab tom nrhiav nyob rau ntawm qhov ntuj, cia li ua npau suav ntawm lub unattainable, lub kuj zoo kawg thiab zoo kawg nkaus!