A 2.5 Hour Exposure Of The Rho Ophiuchi Region From A Dark Sky Site [OC]

The other side of the fence

Cepheus. Cosmic Zoo

2025 January 27

Pleiades over Half Dome Image Credit & Copyright: Dheera Venkatraman

Explanation: Stars come in bunches. The most famous bunch of stars on the sky is the Pleiades, a bright cluster that can be easily seen with the unaided eye. The Pleiades lies only about 450 light years away, formed about 100 million years ago, and will likely last about another 250 million years. Our Sun was likely born in a star cluster, but now, being about 4.5 billion years old, its stellar birth companions have long since dispersed. The Pleiades star cluster is pictured over Half Dome, a famous rock structure in Yosemite National Park in California, USA. The featured image is a composite of 28 foreground exposures and 174 images of the stellar background, all taken from the same location and by the same camera on the same night in October 2019. After calculating the timing of a future juxtaposition of the Pleiades and Half Dome, the astrophotographer was unexpectedly rewarded by an electrical blackout, making the background sky unusually dark.

∞ Source: apod.nasa.gov/apod/ap250127.html

"The Universe Tree" in Frutillar, Chile // Tomás Andonie (a 19-year-old!)

Mars Express view of Mars Poles (incredible detail))

The Full Moon of 2021 via NASA https://ift.tt/3FWxNTm

Every Full Moon of 2021 shines in this year-spanning astrophoto project, a composite portrait of the familiar lunar nearside at each brightest lunar phase. Arranged by moonth, the year progresses in stripes beginning at the top. Taken with the same camera and lens the stripes are from Full Moon images all combined at the same pixel scale. The stripes still looked mismatched, but they show that the Full Moon’s angular size changes throughout the year depending on its distance from Kolkata, India, planet Earth. The calendar month, a full moon name, distance in kilometers, and angular size is indicated for each stripe. Angular size is given in minutes of arc corresponding to 1/60th of a degree. The largest Full Moon is near a perigee or closest approach in May. The smallest is near an apogee, the most distant Full Moon in December. Of course the full moons of May and November also slid into Earth’s shadow during 2021’s two lunar eclipses.

(Published January 01, 2022)

Orion rising over Death Valley // Brett Nickeson

A few easily-spotted nebulae include Barnard's Loop and the Orion Nebula

Morning mist by Esa Ylisuvanto || Website

Bright and cold night sky captured with my good old galaxy S21, from Aosta, Italy. We can see Mars, Orion and the Pléiades.

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