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अध्याय 4 / 10/5 मिनट का पढ़ना

Getting to know the Moon

Its phases, when to observe it and why the full Moon is not the best time.

अनुवाद अभी उपलब्ध नहीं: मूल पाठ

  1. अमावस्यादिन 0
  2. शुक्ल पक्ष का अर्धचंद्रदिन 4
  3. शुक्ल अष्टमीदिन 7
  4. शुक्ल पक्ष का उभरा चंद्रदिन 11
  5. पूर्णिमादिन 15
  6. कृष्ण पक्ष का उभरा चंद्रदिन 18
  7. कृष्ण अष्टमीदिन 22
  8. कृष्ण पक्ष का अर्धचंद्रदिन 26
पूरा चक्र लगभग 29.5 दिन का होता है। कलाएँ उत्तरी गोलार्ध से देखी गई हैं।

The Moon takes about 29.5 days to complete its cycle of phases. It does not change shape: we simply see a different portion of its sunlit half.

  • Waxing crescent: visible in the evening, in the west after sunset.
  • First quarter: high at sunset, sets around midnight.
  • Full Moon: rises at sunset and stays up all night.
  • Last quarter: rises around midnight, visible in the morning.

The best time to look at it

Through binoculars the most spectacular Moon is not the full one but one near first or last quarter: along the terminator, the line between day and night, long shadows bring out craters and mountains.

The Moon and the deep sky

Full Moonlight brightens the whole sky and hides faint galaxies, nebulae and meteors. For those, pick nights close to the new Moon: GAIA's calendar lists them.