Tähtikuvaus
Tähtikuvaus ja astrokuvaus onnistuvat parhaiten oikeilla välineillä. Verkkokauppa.comin valikoimasta löydät astrokuvauksen kamerat, jalustat, teleskoopit ja muut tarvikkeet edulliseen hintaan ja nopealla toimituksella.
tuotetta
Tuotelistaus
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Tähtikuvaus – mitä välineitä tarvitset?
Astrokuvaus asettaa kameralle ja lisälaitteille erityisvaatimuksia. Tähtikuvauksessa kamera altistuu pitkille valotusajoille, joten hyvä kennoherkkyys eli korkea ISO-suorituskyky ja vähäinen kohinataso ovat keskeisiä ominaisuuksia. Järjestelmäkamerat ja peilikamerat soveltuvat tähtikuvaukseen hyvin, sillä niiden kennot ovat riittävän suuria kaappaamaan heikon valon pimeältä taivaalta. Myös erikoistuneet astrokuvauksen kamerat, kuten jäähdytetyt CCD- ja CMOS-kennokamerat, tarjoavat erinomaisen kohinanhallinnan pitkissä valotuksissa.
Jalusta ja seuranta-alusta astrokuvauksen perustana
Vakaa jalusta on tähtikuvauksen perusedellytys. Pitkät valotusajat paljastavat herkästi pienenkin tärinän, joten laadukas kolmijalka on välttämätön. Tähtikuvauksessa erityisen hyödyllinen lisä on ekvatoriaali- eli seuranta-alusta, joka kompensoi maapallon pyörimisliikettä ja pitää tähdet terävinä pitkissäkin valotuksissa. Seuranta-alustat soveltuvat niin yksittäisten tähtien kuin laajojen tähtisumupilvien kuvaamiseen.
Teleskoopit ja objektiivit astrokuvauksen apuna
Astrokuvauksen kohde määrittää pitkälti sopivan optisen välineen. Lintu- ja maisematähtikuvaukseen riittää usein laajakulmaobjektiivi, jolla saa kuvattua esimerkiksi Linnunradan kaartuvan kaaren. Yksittäisten planeettojen, galaksien tai sumupilvien kuvaamiseen tarvitaan enemmän polttoväliä, jolloin teleskoopit tai pitkän polttovälin teleobjektiivit tulevat tarpeeseen. Valikoimastamme löydät sekä aloittelijoille sopivat teleskoopit että vaativampaan astrokuvauksen tarkoitetut optiikat.
Muut tähtikuvauksen tarvikkeet
Kaukosäädin tai langaton laukaisin estää kameran tärähtämisen laukaisuhetkellä, mikä on erityisen tärkeää pitkissä valotuksissa. Intervalometri puolestaan mahdollistaa tähtien liikeratoja tallentavien tähtijälkikuvien eli star trail -kuvien ottamisen automaattisesti. Lisäksi astrokuvauksen suodattimet, kuten valosuodattimet kaupunkivalojen häiritsevää valaistusta vastaan, parantavat kuvanlaatua valosaasteen vaivaamilla alueilla. Verkkokauppa.comilta löydät kaikki tähtikuvauksen ja astrokuvauksen tarvikkeet samasta paikasta edulliseen hintaan ja nopealla toimituksella.