Eridanus Constellation Map

صورة

الشرح: The constellation Eridanus with its bright stars and surrounding constellations. Eridanus is surrounded by (going clockwise from the top): Taurus, Cetus, Fornax, Phoenix, Tucana, Hydrus, Horologium, Caelum, Lepus and Orion. Eridanus is a large constellation that spans a wide range in declination. A small portion of the constellation is in the northern hemisphere with the southern-most point lying at a declination of almost -60°. As it spans the celestial equator, parts of the constellation are visible to the whole Earth at some point in the year. The whole constellation can be observed from northern and southern equatorial regions, southern temperate regions and most of Antarctica. Eridanus is best viewed in the evening in the northern hemisphere winter and southern hemisphere summer. The y-axis of this diagram is in degrees of declination with north as up and the x-axis is in hours of right ascension with east to the left. The sizes of the stars marked here relate to the star's apparent magnitude, a measure of its apparent brightness. The larger dots represent brighter stars. The Greek letters mark the brightest stars in the constellation. These are ranked by brightness with the brightest star being labeled alpha, the second brightest beta, etc., although this ordering is not always followed exactly. The dotted boundary lines mark the IAU's boundaries of the constellations and the solid green lines mark one of the common forms used to represent the figures of the constellations. Neither the constellation boundaries, nor the lines joining the stars appear on the sky.
المصدر: Adapted by the IAU Office of Astronomy for Education from the original by the IAU and Sky & Telescope
رابط المصدر

مصطلحات المعجم: القدرالظاهري , الإحداثيات السماوية , مجموعة نجمية او حشد نجمى , الميل , المطلع المستقيم , برج الثور , الجَبّار
فئات: علم الفلك بالعين المجردة

الترخيص: المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) أيقونات

ملف ( صورة 148.42 kB)
ملف PDF (PDF file 243.47 kB)

Hercules Constellation Map

صورة

الشرح: The constellation Hercules with its bright stars and surrounding constellations. Hercules is surrounded by (going clockwise from the top): Draco, Boötes, Corona Borealis, Ophiuchus, Aquila, Sagitta, Vulpecula and Lyra. Hercules is a large, northern constellation that covers a big range in declination. The whole constellation is visible at some point in the year in the whole northern hemisphere and in equatorial regions of the southern hemisphere. Parts of the constellation can be viewed from temperate and almost all antarctic regions of the southern hemisphere. Hercules is best viewed in the northern hemisphere summer and southern hemisphere winter. The globular clusters M13 and M92 lie in Hercules and are marked here with yellow circles with plus signs superimposed on them. The y-axis of this diagram is in degrees of declination with north as up and the x-axis is in hours of right ascension with east to the left. The sizes of the stars marked here relate to the star's apparent magnitude, a measure of its apparent brightness. The larger dots represent brighter stars. The Greek letters mark the brightest stars in the constellation. These are ranked by brightness with the brightest star being labeled alpha, the second brightest beta, etc., although this ordering is not always followed exactly. The dotted boundary lines mark the IAU's boundaries of the constellations and the solid green lines mark one of the common forms used to represent the figures of the constellations. Neither the constellation boundaries, nor the lines joining the stars appear on the sky.
المصدر: Adapted by the IAU Office of Astronomy for Education from the original by the IAU and Sky & Telescope
رابط المصدر

مصطلحات المعجم: القدرالظاهري , الإحداثيات السماوية , مجموعة نجمية او حشد نجمى , الميل , العنقود النجمي الكروي , المطلع المستقيم
فئات: علم الفلك بالعين المجردة

الترخيص: المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) أيقونات

ملف ( صورة 124.89 kB)
ملف PDF (PDF file 192.32 kB)

Hydrus Constellation Map

صورة

الشرح: The constellation Hydrus with its bright stars and surrounding constellations. Hydrus is surrounded by (going clockwise from the top): Eridanus, Phoenix, Tucana, Octans, Mensa, Dorado, Reticulum and Horologium. Hydrus is a southern constellation and thus the whole constellation is visible in the southern hemisphere at some point in the year. As it lies close to the celestial south pole, only a small part of the northern hemisphere near the equator can see the whole of Hydrus, with other northern equatorial regions able to see parts of the constellation. Hydrus is best viewed in the evenings in the northern hemisphere winter and southern hemisphere summer. This diagram maps an area around the south celestial pole. Here lines of constant right ascension converge. The right ascension values of these lines are marked on the x-axis above and below the diagram. The solid circle around the pole marks a line of -80° declination with the larger, incomplete circle to the right marking -70° declination. The sizes of the stars marked here relate to the star's apparent magnitude, a measure of its apparent brightness. The larger dots represent brighter stars. The Greek letters mark the brightest stars in the constellation. These are ranked by brightness with the brightest star being labeled alpha, the second brightest beta, etc., although this ordering is not always followed exactly. The dotted boundary lines mark the IAU's boundaries of the constellations and the solid green lines mark one of the common forms used to represent the figures of the constellations. Neither the constellation boundaries, nor the lines joining the stars appear on the sky.
المصدر: Adapted by the IAU Office of Astronomy for Education from the original by the IAU and Sky & Telescope
رابط المصدر

مصطلحات المعجم: القدرالظاهري , الإحداثيات السماوية , مجموعة نجمية او حشد نجمى , الميل , المطلع المستقيم
فئات: علم الفلك بالعين المجردة

الترخيص: المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) أيقونات

ملف ( صورة 126.70 kB)
ملف PDF (PDF file 165.65 kB)

Chamaeleon Constellation Map

صورة

الشرح: The constellation Chamaeleon with its bright stars and surrounding constellations. Chamaeleon is surrounded by (going clockwise from the top): Carina, Volans, Mensa, Octans, Apus and Musca. Chamaeleon lies close to the south celestial pole and this the whole of the constellation is visible from the whole southern hemisphere at some point in the year. All or part of the constellation can be seen from equatorial regions of the northern hemisphere. The whole constellation is circumpolar for all but the most equatorial regions of the southern hemisphere. Chamaeleon is best viewed in the evenings in the northern hemisphere spring and southern hemisphere autumn. This diagram maps an area around the south celestial pole. Here lines of constant right ascension converge. The right ascension values of these lines are marked on the x-axis above and below the diagram. The solid circle around the pole marks a line of -80° declination with the larger, incomplete circles above it marking -70° and -60° declination respectively. The sizes of the stars marked here relate to the star's apparent magnitude, a measure of its apparent brightness. The larger dots represent brighter stars. The Greek letters mark the brightest stars in the constellation. These are ranked by brightness with the brightest star being labeled alpha, the second brightest beta, etc., although this ordering is not always followed exactly. The dotted boundary lines mark the IAU's boundaries of the constellations and the solid green lines mark one of the common forms used to represent the figures of the constellations. Neither the constellation boundaries, nor the lines joining the stars appear on the sky.
المصدر: Adapted by the IAU Office of Astronomy for Education from the original by the IAU and Sky & Telescope
رابط المصدر

مصطلحات المعجم: القدرالظاهري , الإحداثيات السماوية , النجوم القطبية , مجموعة نجمية او حشد نجمى , الميل , المطلع المستقيم , القطب السماوي الجنوبي (SCP)
فئات: علم الفلك بالعين المجردة

الترخيص: المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) أيقونات

ملف ( صورة 141.46 kB)
ملف PDF (PDF file 166.96 kB)

Octans Constellation Map

صورة

الشرح: The constellation Octans along with its bright stars and its surrounding constellations. Octans is surrounded by (going clockwise from the top): Hydrus, Indus, Pavo, Apus, Chameleon and Mensa. Octans is a relatively faint constellation that is notable as it lies at the south celestial pole. While the northern pole star is the relatively bright Polaris, sigma Octans, the southern pole star, is barely visible with the naked eye. Octans lies at the south celestial pole and is thus visible from the whole southern hemisphere with some of the constellation visible from equatorial regions of the northern hemisphere. The constellation is circumpolar for most of the southern hemisphere. It is best viewed in the evening in the northern hemisphere autumn and southern hemisphere spring. This diagram maps an area around the south celestial pole. Here lines of constant right ascension converge. The right ascension values of these lines (in hours) are marked on the x-axis above and below the diagram. The solid circle around the pole marks a line of -80° declination with the larger, incomplete circle to the right marking -70° declination. The sizes of the stars marked here relate to the star's apparent magnitude, a measure of its apparent brightness. The larger dots represent brighter stars. The Greek letters mark the brightest stars in the constellation. These are ranked by brightness with the brightest star being labeled alpha, the second brightest beta, etc., although this ordering is not always followed exactly. The dotted boundary lines mark the IAU's boundaries of the constellations and the solid green lines mark one of the common forms used to represent the figures of the constellations. Neither the constellation boundaries, nor the lines joining the stars appear on the sky.
المصدر: Adapted by the IAU Office of Astronomy for Education from the original by IAU/Sky & Telescope
رابط المصدر

مصطلحات المعجم: القدرالظاهري , الإحداثيات السماوية , مجموعة نجمية او حشد نجمى , الميل , النجم القطبي , المطلع المستقيم , القطب السماوي الجنوبي (SCP)
فئات: علم الفلك بالعين المجردة

الترخيص: المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) أيقونات

ملف ( صورة 109.17 kB)
ملف PDF (PDF file 161.98 kB)