Achtung:
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Source
Astro Sweden
Last checked with the dealer
about 20 hours ago
Description
Note:
The item is located abroad. Please note that delivery conditions, shipping times, and/or the purchase process may differ.
0,5x fokalreducerare - 2" TS Optics fokalreducerare, kortar teleskopets fokallängd med 50% och dubblerar systemets optiska hastighet och synfält. Detta kan bl.a. utnyttjas vid användning av kameror med mindre sensorer.
0,5x fokalreducerare - 2 tum Anslutning
Reduceraren gängas fast i din 2" fotoadapter.
Fotografisk användning
Notera att denna reducerare inte korrigerar för brytningsfel som koma, krökt bildfält, eller astigmatism. Koma i reflektorer ökar med större synfält. Färgfelet i refraktorer ökar med kortare brännvidd.
Teleskop och kamera
Reducern rekommenderas enbart när du ska använda ett teleskop med mycket lång f-tal på minst f/10 ihop med en kamera med mindre sensor. Teleskop som fungerar bra i sammanhanget är främst Schmidt-Cassegrain, Edge-HD samt Maksutov-Cassegrain. Storleken på kamerasensorn bör inte vara mer än ungefär 4/3" i diagonalmåttet. Du kan givetvis använda större sensorer men i så fall behöver du beskära bilden för att bli av med de värsta bildfel i hörnen. Observera att fokalreduceraren även förminskar det belysta fältet, även detta kan kräva att du beskär bilden något.
Visuell användning
Du kan använda 1,25" okular. För anslutning, skruva fast reduceraren i 2" filtergängan av din 2"/1,25" adapter. Fokalreduceraren rekommenderas inte för användning med 2" okular då den inte kan belysa hela bildfältet.
Specifikationer:
Reducerfaktor: 0,5x (beroende på projektionsavstånd) Max.avstånd till sensor: Ca 65 mm Filtergänga: 2" filtergänga (M48 x 0,75) på båda sidor Fri öppning: Ca 45 mm
Artikelattribut Exkludera från marknadsföring Nej Varumärke TS-Optics Lagerprofil 2
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