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Glossary term: नेभिगेसन / दिशानिर्देशन

Description: दिशानिर्देशन भनेको चाहे तपाईं पृथ्वीमा होस् वा अन्तरिक्षमा, जहाँ हुनुभए पनि तपाईंको यात्राको इच्छित दिशा के हो, र तपाईं जहाँ जान चाहनुहुन्छ त्यहाँ कसरी पुग्ने भनेर पत्ता लगाउने प्रक्रिया हो। परापूर्व काल देखि नै सूर्य र ताराहरूले दिशानिर्देशनमा महत्त्वपूर्ण भूमिका खेलेका छन्। सबैभन्दा सजिलो उदाहरण; उत्तरी गोलार्धमा सफा रातमा तपाईं उत्तर ध्रुव तारा (Pole Star) प्रयोग गरेर उत्तर दिशा कहाँ छ भनेर निर्धारण गर्न र त्यसअनुसार आफ्नो यात्राको दिशा छनोट गर्न सक्नुहुन्छ। त्यसै गरी, दक्षिणी गोलार्धमा चाहिँ दक्षिणी क्रस (Southern Cross) दक्षिण दिशातर्फ संकेत गर्छ। आधुनिक नेभिगेसन उपकरणहरूको विकास हुनुअघि, "नाक्षत्रिक दिशानिर्देशन" अत्यावश्यक थियो। नेभिगेटरहरूले आफ्नो अक्षांश (latitude) निर्धारण गर्न दिउँसो क्षितिजभन्दा माथि सूर्यको कोण निर्धारण गर्थे, र आफ्नो देशान्तर (longitude) निर्धारण गर्न स्थानीय मध्याह्नको समय (सूर्यको सबैभन्दा माथिल्लो आकाशीय स्थिति) लाई ग्रीनविच मिन समय देखाउने घडीसँग तुलना गर्थे। आधुनिक दिशानिर्देशन प्रायः जीपीएस GPS र यस्तै उपग्रह प्रणालीहरूबाट प्राप्त संकेतहरूमा निर्भर गर्दछ।

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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".

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