Ngā arotahi whakaahua-rahi, e ai ki te ingoa, he roa te arotahi o ngā karāhe, nō reira he whāiti te tirohanga, he pai mō te tango whakaahua i ngā kaupapa tawhiti. Mō te whakaahua whetū, kāore ngā karāhe whakaata-roa i te pai mō te hopu i te rangi pō, inā koa mō ngā whakaahua whānui o ngā wāhi nui o te rangi.
1.Ngā herenga o te whakamahi i ngā karāhe whakaata-rahi hei whakaahua i te rangi pō
Ko te tikanga, ka whakamahia e te whakaahua whetū ngā karāhe whānui; ki te whakataurite, he nui ake ngā herenga o ngā karāhe tawhiti ina tangohia te whakaahua o te rangi pō:
(1)Nā te whāiti o te tirohanga, he uaua ki te hopu i te rangi pō katoa
He whāiti te tirohanga a ngā karāhe whakaata-rahi, he iti iho i te 30° te whānui, ā, kāore e taea te hopu i te Ara Miraka katoa, i te whānuitanga whānui rānei o te rangi pō. He nui te wāhi e nohoia ana e te rangi pō (pērā i te Ara Miraka) (me te whānuitanga whakapae neke atu i te 100°).
Ina whakamahia he karu whakaata-rahi, ka taea e koe te hopu i tētahi wāhanga anake o te rangi pō (pēnei i tētahi rōpū whetū iti, i tētahi whetū kanapa kotahi rānei), ā, ka uaua ki te whakaatu i te āhua katoa o te Ara Mākūkū, o ngā ara whetū nui rānei.
(2)Ka taea e te wā whakaaturanga iti te hua ake he arai whetu
Nā te roa o te arotahi, he poto rawa te wā e kitea ai ngā karāhe whakaata-rahi. Ki te kore e roa ake te wā e kitea ai ngā whetū hei hopu i te māramatanga e tika ana, ka puta ngā whetū hei rārangi pōuriuri nā te hurihanga o te Ao, ka pā ki te kounga o te ahua. Nō reira, ina whakamahia ngā karāhe whakaata-rahi hei whakaahua i te rangi pō, me whakamahi i ngā taputapu pēnei i ngā whakairinga ekueta hei whakaiti i ngā pānga o te nekehanga o ngā whetū.
(3)He iti rawa te āputa, ā, kāore e ranea te urunga mārama
He iti ake ngā pūaha o ngā karāhe whakaata-rahi, engari ko te whakaahua whetū he nui ngā pūaha (pēnei i te f/2.8, i te f/1.4 rānei) hei whakanui ake i te kohikohinga mārama me te whakapoto i te wā whakaaturanga. Ko te iti o te pūaha o ngā karāhe whakaata-rahi ka hua ake he ahua pōuri ake, ka hiahiatia he tairongo ISO teitei ake, ka piki ake te haruru o te ahua, ā, ka pā ki te kounga o te ahua.
He mārama noa iho ngā herenga o te whakamahi i ngā karāhe tawhiti mō te whakaahua i te rangi pō.
(4)He uaua ake te tito me te arotahi
Me arotahi tika te whakaahua ā-rangi ki te mutunga kore (∞), engari he whāiti te tirohanga o ngā karāhe whakaahua-rahi, ā, he papaku rawa te hohonutanga o te tirohanga. Mā te arotahi ā-ringa me te hanganga ka ngāwari te puta o ngā whetū pōuriuri nā ngā hapa iti. Me whakawhirinaki tēnei ki te whakanui tirohanga ora hei arotahi ā-ringa ki tētahi whetū kanapa, ka nui ake te uaua o te tukanga. He rerekē,ngā arotahi whānuihe hohonu ake te āpure arotahi, e āhei ai ki te aro atu ki ngā hapa arotahi.
(5)He tino teitei ngā whakaritenga mō te pumau o ngā taputapu
Ahakoa he maunga ekueta, ka whakanuia tonutia e te whakanui teitei o te karāhe whakaahua-roa ngā pānga o te rūrū o te kāmera. He mea nui te tūāpapa pumau me te pane tūāpapa pakari, ā, me whakamahi pea koe i te raka whakaata me te tuku kati mamao/tuku taura hei whakaiti i te wiri o te kāmera.
Hei tāpiritanga, ko te tango whakaahua i te rangi pō me te arotahi whakaahua-rahi me whai tukanga tukatuka matatini ake hei whakahaere i ngā take pēnei i te tae o ngā whetū me te koi.
Me tino pumau ngā taputapu e hiahiatia ana e ngā arotahi whakaahua-rahi
2.Te whakamahinga o ngā karāhe telephoto mō te tango whakaahua i te rangi pō
Ahakoangā arotahi whakaahua-rahiKāore e pai mō te tango whakaahua i ngā wāhi whānui o te rangi pō, engari he whai hua anō mō ētahi momo whakaahua whetū.
(1)Te hopu whakaahua taipitopito o ngā wāhi motuhake o te rangi pō
Ka taea e ngā karāhe whakaata-rahi te whakanui ake i ngā wāhi motuhake o te rangi pō, e whakaatu ana i ngā mea tawhiti o te rangi hōhonu (pērā i ngā kohu, ngā tautau whetū, me ngā tupua whetu) me ngā wāhanga rānei o te Ara Mākūkū, e whakaatu ana i a rātou i roto i te anga, e whakaatu ana hoki i ngā taipitopito whakamiharo me te ahua o te tauine.
Hei tauira, ka taea te whakamahi hei whakaahua i ngā rua i runga i te mata o te marama, i ngā marama o Hūpiter, i ngā taipitopito rānei o ngā whetū rongonui pērā i a Orion, kia hua ake ai he whakaahua tino kaha.
(2)Te whakawhāiti i te whanaungatanga i waenga i te rangi whetu me te whenua
Mā te whakamahi i te pānga "kōpeketanga ā-wāhi" o ngā karāhe whakaahua-rahi, ka taea te hono tata i ngā whenua tawhiti (pērā i ngā tihi maunga, i ngā whare rama rānei) ki te rangi whetu, ka karohia te raruraru o te whenua e ahua iti rawa ana i roto i ngā whakaahua whānui, me te waihanga i ngā hanganga ahurei (hei tauira, te mea kia rite ngā tihi maunga ki te "tautoko" i tētahi wāhanga o te Ara Mākūkū). Mā tēnei kōpeketanga o te ātea ka puta ake ngā whetū ki roto i te anga, ka hangaia he pānga tirohanga whakamiharo.
Ka taea e ngā karāhe whakaata-rahi te whakaiti i te hononga i waenga i te rangi whetu me te whenua
(3)Te whakaahua i tētahi wāhanga o ngā ara whetu
Ngā arotahi whakaahua-rahie whakamahia ana i roto i te whakaahua ara whetu hei arotahi ki tētahi wāhanga motuhake o ngā porowhita ara whetu e karapoti ana i a Polaris, ka hua ake he pewa kiato ake, he paparanga ake hoki, ka karo i te āhua "takataka" o ngā whakaahua ara whetu whānui.
Hei whakarāpopototanga, ehara ngā karāhe whakaata-rahi i te mea pai rawa atu mō te whakaahua whetū, ā, he nui ngā herenga o tēnei mara; nō reira, me tūpato i te wā e whiriwhiri ana i a rātou. Mō te whakaahua whetū, he pai ake ngā karāhe whakaata-rahi mō te hopu i ngā momo mea motuhake o te rangi, pērā i ngā mea o te rangi hōhonu me ngā wāhi ā-rohe o te rangi pō.
Ngā Whakaaro Whakamutunga:
Mā te mahi tahi me ngā tohunga o ChuangAn, ka whakahaerehia te hoahoa me te hanga e ngā miihini tino pūkenga. Hei wāhanga o te tukanga hoko, ka taea e te māngai o te kamupene te whakamārama taipitopito atu i ngā mōhiohio motuhake mō te momo karāhe e hiahia ana koe ki te hoko. Ka whakamahia te raupapa hua karāhe a ChuangAn i roto i te whānuitanga o ngā tono, mai i te tirotiro, te matawai, ngā waka rererangi, ngā motuka ki ngā whare atamai, me ētahi atu. He maha ngā momo karāhe kua oti te hanga a ChuangAn, ka taea hoki te whakarerekē, te whakarite rānei kia rite ki ō hiahia. Whakapā mai ki a mātou i te wā e taea ai.
Wā tuku: 24-Pepuere-2026
