#CelestialEquator
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marymcintyreastro.bsky.social
2hr 15min #CelestialEquator #StarTrails #timelapse, 16 Aug '25. My camera was pointing south at the celestial equator. I stacked the images in StarStaX, saving the cumulative files to create this timelapse. 315 x 25 sec, #Canon1100D +10mm lens. Music by Doctor Turtle
September 15, 2025 at 9:34 PM
bartlettastro.bsky.social
For those that observe, may you and yours be blessed w/ abundance & balance this #equinox

Sept 23 0005 UT (Sept 22 2005 EDT)
#Sun crossed #celestialequator southward

UMass Amherst Sunwheel vividly teaches these #season cycles

#astrophysics #autumnalequinox #calendar #fall #histsci 🧪🏛️🍎☀️ #scicomm
Red-gold sunset sky over distant hills framing two standing stones with a sign identifying the direction as "West" in the foreground. Two people, one with a dog on a leash, are talking by the stones.
September 23, 2026 at 3:27 AM
bartlettastro.bsky.social
For those who celebrate, may you rejoice in the #WinterSolstice promise of new days.

Today at 4:21 AM US EST, the #Sun reached its point farthest south of the #celestialequator, giving the #northernhemisphere its shortest daylight period.

#winter #solstice #astrophysics #calendar 🍎
December 22, 2024 at 2:08 AM
marymcintyreastro.bsky.social
2hr 15min #StarTrails, pointing south at the #CelestialEquator + the #MilkyWay. Images taken on 16 Aug '25 from my garden in #Oxfordshire, UK. #Canon1100D + 10mm lens, 315 x 25 sec, stacked using #StarStaX
September 15, 2025 at 9:23 PM
bartlettastro.bsky.social
March 20 2026 14:46 UT1

#Sun crosses #celestialequator heading northward
#vernalequinox in #northernhemisphere

#daylight period will continue to lengthen until #summersolstice
#southernhemissphere #seasons are reversed

#astrophysics #astrophotography #calendar #equinox #timekeeping #solstice 🍎🧪
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 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. Tunç Tezel/IAU OAE (CC BY 4.0)
March 20, 2026 at 5:42 PM
earthskyscience.bsky.social
Orion the Hunter is rising in December’s evening sky. Orion lies on the #celestialequator, making it visible from both the Northern and Southern Hemispheres. And it is full of deep-sky treasures! Read more about Orion: 🔭
https://earthsky.org/constellations/orion-the-hunter-most-recognizable/
A graphic depicting "Orion the Hunter" along with several notable stars in the sky, such as Betelgeuse, Bellatrix, Rigel, Saiph, and the Orion Nebula. Orion's belt is also depicted as 3 white dots close together and in the middle of the constellation.
December 21, 2024 at 6:00 PM
marymcintyreastro.bsky.social
5hr 50min #circumpolar + 1 hr #CelestialEquator #StarTrails from #Oxfordshire, UK 12/13 Aug '25. It's been a while since I did this particular kind of creative edit. 2,117 images from 2 Canon 1100D cameras were used to make the video. Music by Dave Simpson #StarStaX
August 14, 2025 at 11:36 PM
trinitydc.bsky.social
Today is the #AutumnalEquinox, which is the point in September when the Sun crosses the #CelestialEquator, creating nearly equal day and night. #TrinityDC #Meteorology #EnvironmentalSciences #Autumn #Fall
September 22, 2025 at 5:03 PM
bartlettastro.bsky.social
#AutumnEquinox 2:19 PM EDT (18:19 UTC) Sept 22, 2025

#Sun crosses #celestialequator heading south, ushering in #northernhemisphere #fall ( #southernhemisphere #spring)

Fewer trees would make more impressive #sunrise at UMass Amherst Sunwheel

#astrophysics #seasons #timekeeping 🍎#calendar #equinox
Sun is just visible through background trees against a partially cloudy sky with two standing stones in a field in the foreground; a sign and a smaller rock in front of and between the larger standing stones; equinox sunrise 2025 at the University of Massachusetts, Amherst, sunwheel
September 22, 2025 at 5:43 PM
bartlettastro.bsky.social
For those who celebrate, may you find your #balance in #nature 's balance. Happy #VernalEquinox!

March 20, 2024 03:06 UTC
March 19, 2024 11:06 PM US EDT

The #Sun crosses the #celestialequator heading north, marking the beginning of northern Spring.

#astrophysics #calendar #equinox #timekeeping🍎
photograph of daffodils pushing up through the soil and on the verge of blooming
March 19, 2024 at 9:31 PM
bartlettastro.bsky.social
Today, on the #SeptemberEquinox, the #Sun rose due #east and set due #west.

At
12:44 UTC
08:44 US EDT
the Sun crossed the #celestialequator heading #south, beginning #northernhemisphere #autumn ( #fall ).

#astrophysics #calendar #timekeeping #autumnalequinox #equinox 🍎
Illustration shows that the two equinoxes occur at intersections of the Sun's apparent path (the ecliptic) and the projection of the Earth's equator on to the sky (the celestial equator) while the solstices occur when the Sun reaches its maximum southern or northern distance from the celestial equator. The fall equinox is also labeled the first point of Libra while the spring equinox is also called the first point of Aries. [public domain image courtesy of Divad (2010) via Wikimedia Commons]
September 22, 2024 at 11:48 PM
nasapodsky.bsky.social
Astronomy Picture from 23/09/2007

The Equal Night

Source: https://apod.nasa.gov/apod/ap070923.htm<a href="/hashtag/AutumnEquinox" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#AutumnEquinoxn#SpaceViewp#Equinox2024i#NASA2#SpaceShuttlee#EarthFromSpacer#SunEarthS#CelestialEquatorl#Astronomys#SpacePhotographyt#Endeavourn#1994Equinox4#SpaceExplorationloration
Stunning view of the Sun from space, captured by the crew of Space Shuttle Endeavour in 1994, a few weeks after the September Equinox. The sun's glare illuminates the shuttle's vertical tail and payload bay equipment as the Earth's curvature is visible in the background. This image commemorates the astronomical event marking the transition of seasons in the Northern and Southern Hemispheres.
March 11, 2025 at 7:13 AM