#AstroHistory
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astrolabe-science.fr
🔭 #astrohistory
drkarrschmidt.bsky.social Suzanne Karr Schmidt @drkarrschmidt.bsky.social · Aug 16
Sundial Sunday!

(Featuring historical collection items from the MIT Museum.)
A bunch of sundials in a case that looks like a banana. Diptych hand drawn dial with a rabbit on it. Ivory diptych with Chinese characters. Multi-lobed brass dial, folding components.
August 16, 2026 at 4:13 PM
mqassiti.bsky.social
#astrohistory #histsci #medievalsky
brepols.net Brepols @brepols.net · Feb 27
🔓𝗢𝗽𝗲𝗻 𝗔𝗰𝗰𝗲𝘀𝘀
𝗟𝗮𝘁𝗶𝗻 𝗣𝘁𝗼𝗹𝗲𝗺𝗮𝗶𝗰 𝗪𝗿𝗶𝘁𝗶𝗻𝗴𝘀 𝗼𝗻 𝗔𝘀𝘁𝗿𝗼𝗻𝗼𝗺𝘆 𝗮𝗻𝗱 𝗔𝘀𝘁𝗿𝗼𝗹𝗼𝗴𝘆 𝘂𝗽 𝘁𝗼 𝗔𝗗 𝟭𝟳𝟬𝟬
𝗔 𝗖𝗼𝗺𝗽𝗿𝗲𝗵𝗲𝗻𝘀𝗶𝘃𝗲 𝗦𝘂𝗿𝘃𝗲𝘆 𝗼𝗳 𝘁𝗵𝗲 𝗪𝗼𝗿𝗸𝘀, 𝗠𝗮𝗻𝘂𝘀𝗰𝗿𝗶𝗽𝘁𝘀 𝗮𝗻𝗱 𝗘𝗮𝗿𝗹𝘆 𝗣𝗿𝗶𝗻𝘁𝗲𝗱 𝗘𝗱𝗶𝘁𝗶𝗼𝗻𝘀
David Juste

More Info: bit.ly/4bavsX4

#Ptolemy #Astronomy #Astrology #ManuscriptStudies #Manuscripts #OpenAccess
February 28, 2026 at 3:30 PM
astrolabe-science.fr
So Beautiful! 🔭 #astrohistory
stephenaj.bsky.social Stephen Johnston @stephenaj.bsky.social · Jul 12
Just published online: a blog post with the first findings from my January research trip to Jacksonville, Florida. This is the unexpected location of a remarkable "new" astronomical compendium by the 16th-century London maker Humfrey Cole. More to follow....

scientificinstrumentsociety.org/blog/
A cotton-gloved hand holds a silver circular disc, itself part of a larger astronomical compendium. The volvelle disc carries an engraved zodiac-calendar scale and two independently rotating discs, one with a sun pointer underneath a smaller disc with a moon pointer. The centre of the moon disc has an astrological aspectarium and a window to show the phase of the moon. Beyond a hinge, a part of another circular face of the instrument is visible.
July 12, 2026 at 7:21 AM
astrolabe-science.fr
#astrohistory
March 23, 2025 at 12:35 PM
astrolabe-science.fr
#astrohistory
stephenaj.bsky.social Stephen Johnston @stephenaj.bsky.social · Jun 7
Being back in Paris meant another chance to visit the Réserves of the @museeartsetmetiers.bsky.social in St Denis. This time I was able to take a microscope to document this astrolabe - thought to be (at least partly) from the workshop of Regiomontanus.
stephenaj.bsky.social Stephen Johnston @stephenaj.bsky.social · Jan 20
This was a first reconnaissance visit. The exceptional instruments will need further study. Among them an astrolabe from the workshop of Regiomontanus, whose replacement horse was wedged in so tightly that we could not open it. 17/25
June 7, 2026 at 9:32 AM
mqassiti.bsky.social
Highly recommended!
#astrohistory #histsci #medievalsky
fbgotha.bsky.social Forschungsbibliothek Gotha @fbgotha.bsky.social · Mar 30
Commentaries and glosses functioned as vehicles for the study of astronomy. @nadineloehr.bsky.social presents "Reflections on the Many Forms of Commentary in Astronomical and Astrological Manuscripts" in this week's Gotha Manuscript Talk
📆 Wednesday, 1 April 2026, 6:15 CET
1/2
a manuscript containing a drawing with circles and marginal notes
March 30, 2026 at 7:18 PM
astrolabe-science.fr
I think it's #astrohistory !
comethunter.de Maik Meyer ☄️ @comethunter.de · Apr 28
Finally! The paper is out!
Want to see a naked eye daylight comet? Mark your calendars for 2097! At least if the "ancestry line" given in the paper is correct. Sadly, I won't live to see it. Would I bet my money? I'd say yes.

www.sciengine.com/JAHH/doi/10....

☄️🔭 #CometWatch #histsci #histastro
Observation of the tail of comet C/1743 X1 by Jean-Philippe Loys de Cheseaux on the mornings of 8 and 9 March 1744, from 1744. Traitè de la Comete qui a Paru en Decembre 1743 & en Janvier, Fevrier & Mars 1744. Lausanne, Marc-Michel Bousquet & Compagnie., my scan/collection. Observation of the tail of comet C/1743 X1 by Jean-Philippe Loys de Cheseaux on the mornings of 8 and 9 March 1744, from 1744. Traitè de la Comete qui a Paru en Decembre 1743 & en Janvier, Fevrier & Mars 1744. Lausanne, Marc-Michel Bousquet & Compagnie., my scan/collection. "THE GREAT COMET C/1743 X1: POSSIBLE IDENTIFICATION IN HISTORIC RECORDS OF 1402, 1032, 676, and 336" Journal of Astronomical History and Heritage, 28(1), 29 – 49 (2025). Abstract: "The great comet of 1744, C/1743 X1, is notable for its brightness, which enabled it to be seen close to the Sun during the day and exhibit an impressive tail. One of the first orbit calculators, O. P. Hiorter, had already noted the comet's resemblance to the great daylight comet C/1402 D1. This was later supported by H. W. M. Olbers and J. Holetschek. This work re-evaluates the historic astrometry and shows that the data are fully compatible with the identity first suggested by Hiorter. Based on a tentative link of both apparitions, we show that the comets of 1032, 676, and possibly of 336 are also fully compatible with this comet based on the comparison with the historic records. We present a prediction for the next perihelion passage, which might occur at the end of 2097."
May 5, 2025 at 5:26 PM
mqassiti.bsky.social
Wow!
#booksky #astrohistory
February 17, 2026 at 9:21 PM
astrolabe-science.fr
🔭 #astrohistory
September 12, 2025 at 5:52 AM
drkeithsmith.bsky.social
Florence is rightly famous for its art galleries, but I was also impressed by the city’s science museums. 🔭🧪⚛️

This enormous armillary sphere is in the Museo Galileo; it shows the Ptolemaic model of the Solar System. Built by Antonio Santucci in 1593, for Ferdinand I de' Medici. #astrohistory
May 9, 2026 at 4:27 PM
astrolabe-science.fr
#astrohistory 🔭
February 16, 2026 at 12:21 PM
drkeithsmith.bsky.social
These are not just Galilean-style telescopes, they are the originals: hand-built by Galileo himself in 1609 and 1610, the only surviving examples.

The older of the two is possibly the telescope he used to discover the moons of Jupiter - which revolutionised astronomy.
🔭🧪⚛️ #astrohistory #planetsci
May 9, 2026 at 4:35 PM
astrolabe-science.fr
A beautiful and impressive collection ! Should definitely visit Nuremberg one day (well, several).
#sundial #astrohistory
comethunter.de Maik Meyer ☄️ @comethunter.de · Jul 16
Saw the craziest variants of #sundials in the Germanic National Museum in #Nuremberg today. Cylindrical, octaedrical, cubic, like a funnel, etc etc pp. 🔭☄️
Various types of sundials on display Various types of sundials on display
July 16, 2025 at 6:46 PM
emily.space
To anyone ever in Bath in the UK, I highly recommend visiting the Herschel museum!

It's pretty incredible that the first planet ever discovered with a telescope was found at a pretty unassuming townhouse in a Georgian-era vacation town... 🔭 #astrohistory
bathastronomers.org.uk Bath Astronomers @bathastronomers.org.uk · Mar 15
@bathastronomers.org.uk accompanied the @herschelmuseum.bsky.social on Thu 13th Mar to celebrate 244th anniversary of the discovery of Uranus from the garden at 19 New King Street. A sold out night with visitors looking up from that same place to giggle as everyone pronounced Uranus carefully.
Uranus 244 years since discovery Tony setting up the telescopes in the garden of 19 New King Street A packed garden of visitors to the Museum on 13th March, 244 years to the day since the discovery of Uranus from that very location.
March 15, 2025 at 8:29 AM
skyandtelescope.bsky.social
Even today, the names of women in astronomy are not as well known as they should be.
skyandtelescope.org/astronomy-bl...
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#astronomy #astrohistory #womeninstem #womeninastronomy #stargazing #mindfullness
Honoring the Women of Astronomy
Even today, the names of women in astronomy are not as well known as they should be.
skyandtelescope.org
August 5, 2025 at 5:06 PM
skycalpro.com
Pioneer launched as low-cost pathfinders to test the asteroid belt & Jupiter’s radiation before the Voyager “Grand Tour” missions. On board: magnetometer, plasma analyser, cosmic-ray telescope, UV/IR photometers, trapped-radiation detector,Imaging Photopolarimeter.
#AstroHistory
November 13, 2025 at 7:46 AM
guywatkins.bsky.social
View of Teide volcano (Tenerife) taken by me from the old observatory on Mount Guajara. The observatory was established by Charles Piazzi Smyth. Details: royalsociety.org/blog/2019/10... #astrohistory #canarias
View of Teide volcano (Tenerife) taken by me from the old observatory on Mount Guajara. The observatory established by Charles Piazzi Smyth. Details: https://royalsociety.org/blog/2019/10/above-the-clouds #astrohistory
December 15, 2024 at 12:45 PM
astrosky.eco
And the History of Astronomy feed: #astrohistory / #historyofastronomy
November 13, 2024 at 7:32 PM
emily.space
The museum has some really interesting artifacts in it too, like the prism that William Herschel used to discover infrared light: 🔭 #astrohistory
A photo of the prism in the museum used by Herschel to discover infrared light.
March 15, 2025 at 8:34 AM
mqassiti.bsky.social
#histsci
#astrohistory
#medievalsky
November 25, 2024 at 10:20 PM
astrolabe-science.fr
🔭 #astrohistory
February 23, 2026 at 7:08 AM
astrolabe-science.fr
🔭 🧪 #astrohistory

The 'Astronomical Timekeeper', a 1770 paper instrument, by Scottish astronomer James Ferguson.

Thread 1/6
Old yellow sheet of paper, consisting of a text at the bottom and a circular diagram. Several scales on the edge, labeled dots. Title: 'Astronomical Time keeper'. Source: danielcrouchrarebooks.com
September 13, 2025 at 6:45 PM
astrolabe-science.fr
Tagging for #astrohistory feed.
leilabelkora.bsky.social Leila Belkora PhD, astrophysics @leilabelkora.bsky.social · Apr 18
If you’ve ever wanted to read a history of astronomy 🧪🔭 (mostly 19th-20th C) that has no math yet explains how we arrived at the idea of galaxies and our place in the cosmos: my book is on sale rn at Routledge, with free shipping.
Go to Routledge.com, search for Belkora.

Or find it in a library!
Routledge.co
April 19, 2025 at 7:27 AM
drnereide.bsky.social
In 1610 (some sources mention the 12th March, others the 13th) Galileo Galilei published the 'Sidereus Nuncius' (Sidereal Messenger or Starry Messenger) in Venice at the printer Tommaso Baglioni.

Image source and more➡️ en.wikipedia.org/wiki/Sidereu...

🔭 🧪 #astrohistory #histsci 🧵
Title page of Sidereus nuncius, 1610, by Galileo Galilei (1564-1642). *IC6.G1333.610s, Houghton Library, Harvard University Licensing: Public Domain
March 13, 2025 at 8:44 PM
mqassiti.bsky.social
Oh, just saw that both volumes are already available #OA on the project page.

ptolemaeus.badw.de/publications

#astrohistory #histsci #medievalsky
February 28, 2026 at 6:13 PM