by neufer » Tue Dec 08, 2020 4:31 pm
https://whenthecurveslineup.com/2020/02/20/1623-the-great-conjunction-of-jupiter-and-saturn/ wrote:
The Starry Sky : 1623: The Great Conjunction of Jupiter and Saturn
By Jeffrey L. Hunt on February 20, 2020
<<The 2020 Great Conjunction of Jupiter and Saturn is the closest conjunction of these giant planets since their conjunction in 1623.
The Jupiter – Saturn conjunction of 1623 occurred in the wake of the invention of the telescope, so observing was in its infancy; yet, the sky was full of planetary activity. A partial lunar eclipse (April 15, 1623) was visible throughout the Americas and in Central Europe, where the moon was setting as the eclipse reached its 90% magnitude. Venus passed Jupiter and Saturn in late June and Mercury passed the planetary pair less than two weeks later, when the planets were about 22° east of the sun. With the inner planets in the vicinity of the impending Great Conjunction and Mars reaching opposition (July 4, 1623), surely sky watchers were observing the planets’ locations to test and revise their planetary motion equations.
By the time of the Great Conjunction on July 16, 1623, the planetary pair was less than 13° east of the sun. By Civil Twilight, the pair was near the horizon at mid-latitudes. Without optical help, the conjunction likely went unobserved, even for those with recently minted telescopes. Even then, the observer needed some luck to find the conjunction.
In later years, two British publications stated that the 1623 conjunction was not observed. In 1886, the Monthly Notices of the Royal Astronomical Society state that the February 8, 1683, Jupiter – Saturn conjunction was the first observed “since the invention of the telescope” and that the 1623 passing went unobserved. The same statement was written in the Journal of the British Astronomical Association in 1897. Perhaps the conjunction was observed without optical aid and recorded from more southerly latitudes, when the planets were higher in the sky.
Did the two British publications make the statements out of parochialism, rather than from factual observations made around Europe regarding the first Great Conjunction observed with a telescope, or was this the first time that the conjunction fit into an eyepiece since the telescope’s invention? The February 24, 1643, conjunction was visible in the western sky during mid-twilight as well as the October 16, 1663, conjunction. At the second conjunction the planets were about 10° up in the southwest at one hour after sunset. However, at both conjunctions, the planets were nearly 1° apart. At the 1683 conjunction, the planets were close, about 0.2° apart, twice the separation of the upcoming event. While the two previous conjunctions were visible to the naked eye and individually in a telescopic eyepiece, the 1683 conjunction was the first observed with both planets simultaneously in an eyepiece. With a separation of 0.1°, the 1623 conjunction would have fit into telescopes eyepieces of that generation, but certainly those early telescopes were unwieldy to steer and hold steady, and the telescope operator needed some persistence during the days preceding the conjunction to follow the converging planets into bright twilight while they had sufficient altitude to observe them. So, while the British publications are accurate about viewing the planets simultaneously through a telescope, the two preceding conjunctions were visible to the unaided eye and individually through a telescope, and this does not speak to the issue as whether the 1623 conjunction when unobserved across all of humanity.
In recent times, Great Conjunctions occurred February 18, 1961; followed by a triple conjunction of the two planets in 1980-81; and the last occurred May 30, 2000, although this was difficult to observe.
November 29, 2020 Update: Patrick Hartigan from Rice University has generated a list of Great Conjunctions spanning 3000 years. The dates may be off a day or two from the actual conjunction dates. His list includes the following close conjunctions:
- March, 1226, separation 2.1′, one-third the separation of 2020
August, 1563, Separation 6.8′, slightly larger than 2020
July,1623, separation 5.2′, slightly less than 2020, but not likely visible.
So how do we properly describe this? Closest since 1623? Yes, although not likely observed. Closest since 1563? Yes. This was easily visible in the morning sky. Closest observable since 1226? Yes, this was clearly visible as well.>>
Click to play embedded YouTube video.
-------------------------------------------------------
<<On October 10, 1604 a new star, as bright as Jupiter, was spotted
essentially between Jupiter and Saturn, which themselves were only 9
degrees apart. Kepler observed it carefully until it faded into the
sun's glare the following year, and later wrote a book De Stella Nova
in Pede Serpentarti (About the New Star in the Serpent's Foot).>>
.
After a ~ 12 year orbital cycle Jupiter returned to the region of the
"Serpent's foot" on the Twelfth Night/Epiphany 1616 to be meet not by
planets Saturn & Mars but, rather, by the planets Venus & Mercury.
.
Exactly, three lunar months after Epiphany was Easter (April 3, 1616).
.
On the first waxing quarter moon after that was ST. GEORGE'S Day
. - April 23, 1616 both Shakspere & Cervantes were dead.
.
. The next conjunction of Jupiter & Saturn was
. an extremely close one on July 14, 1623.
. Both in Cancer with the the Sun
-----------------------------------------------------------
.......... Transfiguration
.......................................................
. Rutland released from Tower August 6, 1601
.
Jupiter OCCULTATION of 8th 'planet' UR-ANVs: August 5, 1623.
.
. Maffeo BarBERini elected Pope URBANVIII: August 6, 1623
.
____ Anne Hathaway dies: August 6, 1623
_______ Ben Jonson dies: August 6, 1637
.......................................................
'Two feet by two feet will do for all I WANT.' -Jonson
-------------------------------------------------------------
https://en.wikipedia.org/wiki/First_Folio wrote:
<<The printing of Shakespeare's First Folio was probably done between February 1622 and early November 1623. (Ben Jonson wrote a preface & and 80 line dedicatory poem for the folio.) The first impression had a publication date of 1623, and the earliest record of a retail purchase is an account book entry for 5 December 1623 of Edward Dering (who purchased two); the Bodleian Library, in Oxford, received its copy in early 1624 (which it subsequently sold for £24 as a superseded edition when the Third Folio became available in 1663/1664)>>
https://en.wikipedia.org/wiki/Henry_Wriothesley,_3rd_Earl_of_Southampton wrote:
<<
Henry Wriothesley, 3rd Earl of Southampton KG (6 October 1573 – 10 November 1624) was the only son of Henry Wriothesley, 2nd Earl of Southampton, and Mary Browne, daughter of Anthony Browne, 1st Viscount Montagu.
Shakespeare's two narrative poems, Venus and Adonis and The Rape of Lucrece, were dedicated to Southampton, who is frequently identified as the Fair Youth of Shakespeare's Sonnets.>>
[quote=https://whenthecurveslineup.com/2020/02/20/1623-the-great-conjunction-of-jupiter-and-saturn/]
[color=#0000FF][size=125]The Starry Sky : 1623: The Great Conjunction of Jupiter and Saturn[/size][/color]
By Jeffrey L. Hunt on February 20, 2020
<<The 2020 Great Conjunction of Jupiter and Saturn is the closest conjunction of these giant planets since their conjunction in 1623.
The Jupiter – Saturn conjunction of 1623 occurred in the wake of the invention of the telescope, so observing was in its infancy; yet, the sky was full of planetary activity. A partial lunar eclipse (April 15, 1623) was visible throughout the Americas and in Central Europe, where the moon was setting as the eclipse reached its 90% magnitude. Venus passed Jupiter and Saturn in late June and Mercury passed the planetary pair less than two weeks later, when the planets were about 22° east of the sun. With the inner planets in the vicinity of the impending Great Conjunction and Mars reaching opposition (July 4, 1623), surely sky watchers were observing the planets’ locations to test and revise their planetary motion equations.
By the time of the Great Conjunction on July 16, 1623, the planetary pair was less than 13° east of the sun. By Civil Twilight, the pair was near the horizon at mid-latitudes. Without optical help, the conjunction likely went unobserved, even for those with recently minted telescopes. Even then, the observer needed some luck to find the conjunction.
In later years, two British publications stated that the 1623 conjunction was not observed. In 1886, the Monthly Notices of the Royal Astronomical Society state that the February 8, 1683, Jupiter – Saturn conjunction was the first observed “since the invention of the telescope” and that the 1623 passing went unobserved. The same statement was written in the Journal of the British Astronomical Association in 1897. Perhaps the conjunction was observed without optical aid and recorded from more southerly latitudes, when the planets were higher in the sky.
Did the two British publications make the statements out of parochialism, rather than from factual observations made around Europe regarding the first Great Conjunction observed with a telescope, or was this the first time that the conjunction fit into an eyepiece since the telescope’s invention? The February 24, 1643, conjunction was visible in the western sky during mid-twilight as well as the October 16, 1663, conjunction. At the second conjunction the planets were about 10° up in the southwest at one hour after sunset. However, at both conjunctions, the planets were nearly 1° apart. At the 1683 conjunction, the planets were close, about 0.2° apart, twice the separation of the upcoming event. While the two previous conjunctions were visible to the naked eye and individually in a telescopic eyepiece, the 1683 conjunction was the first observed with both planets simultaneously in an eyepiece. With a separation of 0.1°, the 1623 conjunction would have fit into telescopes eyepieces of that generation, but certainly those early telescopes were unwieldy to steer and hold steady, and the telescope operator needed some persistence during the days preceding the conjunction to follow the converging planets into bright twilight while they had sufficient altitude to observe them. So, while the British publications are accurate about viewing the planets simultaneously through a telescope, the two preceding conjunctions were visible to the unaided eye and individually through a telescope, and this does not speak to the issue as whether the 1623 conjunction when unobserved across all of humanity.
In recent times, Great Conjunctions occurred February 18, 1961; followed by a triple conjunction of the two planets in 1980-81; and the last occurred May 30, 2000, although this was difficult to observe.
November 29, 2020 Update: Patrick Hartigan from Rice University has generated a list of Great Conjunctions spanning 3000 years. The dates may be off a day or two from the actual conjunction dates. His list includes the following close conjunctions:
[list]March, 1226, separation 2.1′, one-third the separation of 2020
August, 1563, Separation 6.8′, slightly larger than 2020
[b][color=#0000FF]July,1623, separation 5.2′, slightly less than 2020, but not likely visible.[/color][/b][/list]
So how do we properly describe this? Closest since 1623? Yes, although not likely observed. Closest since 1563? Yes. This was easily visible in the morning sky. Closest observable since 1226? Yes, this was clearly visible as well.>>[/quote][float=right][img3=Shakespeare's First Folio : early November 1623]https://upload.wikimedia.org/wikipedia/commons/thumb/c/c4/William_Shakespeare_-_First_Folio_1623.jpg/800px-William_Shakespeare_-_First_Folio_1623.jpg[/img3][img3=Henry Wriothesley (6 Oct. 1573 – 10 Nov. 1624) in the Tower of London in 1603]https://upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Wriothesley_southampton.jpg/800px-Wriothesley_southampton.jpg[/img3][youtube]https://www.youtube.com/watch?v=1dtXf0XzDdA[/youtube][/float]-------------------------------------------------------
[quote]<<On October 10, 1604 a new star, as bright as Jupiter, was spotted
essentially between Jupiter and Saturn, which themselves were only 9
degrees apart. Kepler observed it carefully until it faded into the
sun's glare the following year, and later wrote a book De Stella Nova
in Pede Serpentarti (About the New Star in the Serpent's Foot).>>[/quote]
.
After a ~ 12 year orbital cycle Jupiter returned to the region of the
"Serpent's foot" on the Twelfth Night/Epiphany 1616 to be meet not by
planets Saturn & Mars but, rather, by the planets Venus & Mercury.
.
Exactly, three lunar months after Epiphany was Easter (April 3, 1616).
.
On the first waxing quarter moon after that was ST. GEORGE'S Day
. - April 23, 1616 both Shakspere & Cervantes were dead.
.
. The next conjunction of Jupiter & Saturn was
. an extremely close one on July 14, 1623.
. Both in Cancer with the the Sun
-----------------------------------------------------------
.......... Transfiguration
.......................................................
. Rutland released from Tower August 6, 1601
.
Jupiter OCCULTATION of 8th 'planet' UR-ANVs: August 5, 1623.
.
. Maffeo BarBERini elected Pope URBANVIII: August 6, 1623
.
____ Anne Hathaway dies: August 6, 1623
_______ Ben Jonson dies: August 6, 1637
.......................................................
'Two feet by two feet will do for all I WANT.' -Jonson
-------------------------------------------------------------
[quote=https://en.wikipedia.org/wiki/First_Folio]
<<The printing of Shakespeare's First Folio was probably done between February 1622 and early November 1623. (Ben Jonson wrote a preface & and 80 line dedicatory poem for the folio.) The first impression had a publication date of 1623, and the earliest record of a retail purchase is an account book entry for 5 December 1623 of Edward Dering (who purchased two); the Bodleian Library, in Oxford, received its copy in early 1624 (which it subsequently sold for £24 as a superseded edition when the Third Folio became available in 1663/1664)>>[/quote][quote=https://en.wikipedia.org/wiki/Henry_Wriothesley,_3rd_Earl_of_Southampton]
<<[b][u][color=#0000FF]Henry Wriothesley, 3rd Earl of Southampton KG (6 October 1573 – 10 November 1624)[/color][/u][/b] was the only son of Henry Wriothesley, 2nd Earl of Southampton, and Mary Browne, daughter of Anthony Browne, 1st Viscount Montagu. [b][u][color=#0000FF]Shakespeare's two narrative poems, Venus and Adonis and The Rape of Lucrece, were dedicated to Southampton, who is frequently identified as the Fair Youth of Shakespeare's Sonnets.[/color][/u][/b]>>[/quote]