Dhanusaragra: Difference between revisions
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==Etymology and History== | == Etymology and History == | ||
'''Name Variants''' | '''Name Variants''' | ||
''Dhanuśarāgra'' | ''Dhanuśarāgra (धनुशराग्र)'' | ||
Dhanusharagra | Dhanusharagra | ||
===Origin of Constellation=== | ===Origin of Constellation=== | ||
The term ''Dhanuśarāgra'' literally means tip of the arrow. ''Dhanu'' - bow, ''śara'' - arrow, ''agra'' - tip. This has been found in the catalogue of astrolabes translated from Persian. The names in these star lists of the dials have been coined based on their position. <ref>Sarma S R, 2023, A Descriptive Catalogue of Indian Astronomical Instruments, https://srsarma.in/catalogue.php </ref>The coordinates match with γ Sagittarii. The accuracy of the star dials cannot distiniguish between the two stars γ 1 and γ2. The image based on the artwork from [[wikicommons]]<ref>https://upload.wikimedia.org/wikipedia/commons/7/7e/Sidney_Hall_-_Urania%27s_Mirror_-_Sagittarius_and_Corona_Australis%2C_Microscopium%2C_and_Telescopium.png</ref> (https://upload.wikimedia.org/wikipedia/commons/7/7e/Sidney_Hall_-_Urania%27s_Mirror_-_Sagittarius_and_Corona_Australis%2C_Microscopium%2C_and_Telescopium.png) represents the position - the red circle envelopes both the stars. | The term ''Dhanuśarāgra (धनुशराग्र)'' literally means tip of the arrow. ''Dhanu'' - bow, ''śara'' - arrow, ''agra'' - tip. This has been found in the catalogue of astrolabes translated from Persian. The names in these star lists of the dials have been coined based on their position. <ref>Sarma S R, 2023, A Descriptive Catalogue of Indian Astronomical Instruments, https://srsarma.in/catalogue.php </ref>The coordinates match with γ Sagittarii. The accuracy of the star dials cannot distiniguish between the two stars γ 1 and γ2. The image based on the artwork from [[wikicommons]]<ref>https://upload.wikimedia.org/wikipedia/commons/7/7e/Sidney_Hall_-_Urania%27s_Mirror_-_Sagittarius_and_Corona_Australis%2C_Microscopium%2C_and_Telescopium.png</ref> (https://upload.wikimedia.org/wikipedia/commons/7/7e/Sidney_Hall_-_Urania%27s_Mirror_-_Sagittarius_and_Corona_Australis%2C_Microscopium%2C_and_Telescopium.png) represents the position - the red circle envelopes both the stars. | ||
[[File:Dhanusaragra.jpg|thumb]] | [[File:Dhanusaragra.jpg|thumb]] | ||
The two astrolabes which have this name engraved are C 006 (undated) and C(001, dated 1604CE) and identified as μ Sagittarii in the catalogue. In the latter, C001, the position actually [[corresponds]] to the [[supernova]] of 1604 CE. <ref>Shylaja B S, 2019, Records of Supernovae, Current Science, 116, 1430</ref> <ref>Shylaja B S, 2026, Astrolabes as records of previous eruptions of recurrent nova T CrB, 47, 39</ref> | The two astrolabes which have this name engraved are C 006 (undated) and C(001, dated 1604CE) and identified as μ Sagittarii in the catalogue. In the latter, C001, the position actually [[corresponds]] to the [[supernova]] of 1604 CE. <ref>Shylaja B S, 2019, Records of Supernovae, Current Science, 116, 1430</ref> <ref>Shylaja B S, 2026, Astrolabes as records of previous eruptions of recurrent nova T CrB, 47, 39</ref> | ||
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This star name thus can be for γ1 Sagittarii. | This star name thus can be for γ1 Sagittarii. | ||
== Transfer and Transformation == | |||
<gallery> | <gallery> | ||
</gallery> | </gallery> | ||
Latest revision as of 13:31, 16 July 2026
Authors: Shylaja, ASE Tech Team
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Etymology and History
Name Variants
Dhanuśarāgra (धनुशराग्र)
Dhanusharagra
Origin of Constellation
The term Dhanuśarāgra (धनुशराग्र) literally means tip of the arrow. Dhanu - bow, śara - arrow, agra - tip. This has been found in the catalogue of astrolabes translated from Persian. The names in these star lists of the dials have been coined based on their position. [1]The coordinates match with γ Sagittarii. The accuracy of the star dials cannot distiniguish between the two stars γ 1 and γ2. The image based on the artwork from wikicommons[2] (https://upload.wikimedia.org/wikipedia/commons/7/7e/Sidney_Hall_-_Urania%27s_Mirror_-_Sagittarius_and_Corona_Australis%2C_Microscopium%2C_and_Telescopium.png) represents the position - the red circle envelopes both the stars.
The two astrolabes which have this name engraved are C 006 (undated) and C(001, dated 1604CE) and identified as μ Sagittarii in the catalogue. In the latter, C001, the position actually corresponds to the supernova of 1604 CE. [3] [4]
This star name thus can be for γ1 Sagittarii.
Transfer and Transformation
Mythology
Weblinks
References
- ↑ Sarma S R, 2023, A Descriptive Catalogue of Indian Astronomical Instruments, https://srsarma.in/catalogue.php
- ↑ https://upload.wikimedia.org/wikipedia/commons/7/7e/Sidney_Hall_-_Urania%27s_Mirror_-_Sagittarius_and_Corona_Australis%2C_Microscopium%2C_and_Telescopium.png
- ↑ Shylaja B S, 2019, Records of Supernovae, Current Science, 116, 1430
- ↑ Shylaja B S, 2026, Astrolabes as records of previous eruptions of recurrent nova T CrB, 47, 39
