المستندات والموارد - نتائج البحث
نتائج البحث
The Sun in H-alpha
صورة
الشرح: The Sun in H-alpha.
المصدر: Carolin Liefke
وسوم: Solar eclipse , Solar prominence , Sun , Sun in H-alpha ملف ( صورة 3.29 MB)
Winter Haloes, by Thomas Gigl, Germany
صورة
أُنشئ لصالح OAE
الشرح: Second place in the 2021 IAU OAE Astrophotography Contest, category Sun/Moon haloes.
Captured in Jochberg located in the famous Austrian ski-region of Tirol, this image shows multiple features related to ice halos, which are a more common appearance around the sun, due to its brightness, than the moon. External and internal reflection of sun rays from ice crystal faces and within different types of ice crystals lead to these halo related phenomena. The 22° halo encircles the sun, with two bright spots at the edge called Sundogs, Parhelia or Mock Suns observed to the left and right at the same height as the sun. The horizontal white band called the parhelic circle, named after the sun god Helios, passes through the sun and the Sundogs at the same angular elevation. An Upper tangent arc, a suncave parry arc and a lower tangent arc are also seen touching the top and bottom of the 22° halo. An upside down rainbow like arc or the circumzenithal arc is seen touching the bright supralateral arc, both of which are less frequently observed.
المصدر: Thomas Gigl/IAU OAE
مصطلحات المعجم:
الشمس , الهالة
فئات:
علم الفلك بالعين المجردة
, الشمس
الترخيص: المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) أيقونات
هذا الملف على Zenodo ( صورة 10.36 MB)
Every Galaxy Day-by-Day
صورة
الشرح: “Every galaxy, day by day, is a reminder that our differences make us unique” is the message from the school IES Manuel Martín González in Tenerife, Canary Islands
Solstices and Equinox
صورة
أُنشئ لصالح OAE
الشرح: Honorable mention in the 2023 IAU OAE Astrophotography Contest, category of Still images of day arcs of the Sun and Solargraphs.
This captivating image showcases the journey of the Sun through the sky during the winter solstice (bottom), equinox (middle), and summer solstice (top) in Bursa, Turkey, between 21 December 2007 and 20 June 2008. Using a fisheye lens, the photographer captured the Sun's positions at regular intervals from sunrise to sunset on the three different days, illustrating the changing lengths of day and night throughout the year. The variations in the Sun’s daily path across the sky, its height at midday, and the positions of sunrise and sunset, as well as the length of a day, depend on Earth’s axial tilt relative to its orbit around the Sun. The series was taken from a rooftop in Bursa, where the local terrain adds its own unique touch by occasionally obstructing the horizon. Oriented with north at the top and south at the bottom, this visual diary serves as a stunning representation of the Sun’s path for those residing in mid-northern latitudes.
المصدر: Tunç Tezel/IAU OAE (CC BY 4.0)
مصطلحات المعجم:
الاعتدال , الانقلاب الشمسي , الانقلاب الصيفي , مسار الشمس (قوس النهار) , الانقلاب الشتوي
فئات:
علم الفلك بالعين المجردة
وسوم:
astrophotography
الترخيص: المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) أيقونات
هذا الملف على Zenodo ( صورة 1.71 MB)
Equal Day 2025 poster
صورة
الشرح: The poster for Equal Day 2025
المصدر: OAE Center Italy/NAEC Lebanon
ملف ( صورة 1.63 MB)
