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42nd Street, New York City
Manhattanhenge is an occurrence that happens twice a year when the setting sun perfectly aligns with the east-west streets of the Manhattan grid. If Manhattan's street grid wasn't rotated 30 degrees east from geographic north, Manhattanhenge would always coincide with the equinoxes.
Venus,Mars and Jupiter all lined up. After a week of waiting for cloudy skies to clear it was a great sight just as the sun began to rise.
The Mundo Perdido is to the west of the Plaza of the Seven Temples. It is the largest ceremonial complex dating from the Preclassic period at Tikal.
The complex was organised as a large E-Group consisting of a pyramid aligned with a platform to the east that supported three temples.
The Mundo Perdido complex was rebuilt many times over the course of its history. By AD 250–300 its architectural style was influenced by the great metropolis of Teotihuacan in the Valley of Mexico, including the use of the talud-tablero form.During the Early Classic period (c. 250–600) the Mundo Perdido became one of the twin foci of the city, the other being the North Acropolis.From AD 250 to 378 it may have served as the royal necropolis. The Mundo Perdido complex was given its name by the archaeologists of the University of Pennsylvania; it is centred upon the Lost World Pyramid and a small platform to the west of it.
The Lost World Pyramid (Structure 5C-54) is the largest structure in the Mundo Perdido complex. It lies in the southwest portion of Tikal’s central core, south of Temple III and west of Temple V. It was decorated with stucco masks of the sun god and dates to the Late Preclassic; this pyramid is part of an enclosed complex of structures that remained intact and un-impacted by later building activity at Tikal. By the end of the Late Preclassic this pyramid was one of the largest structures in the Maya region. It attained its final form during the reign of Chak Tok Ich'aak in the 4th century AD, in the Early Classic, standing more than 30 metres high with stairways on all four sides and a flat top that possibly supported a superstructure built from perishable materials. Although the plaza later suffered significant alteration, the organization of a group of temples on the east side of this complex adheres to the layout that defines the so-called E-Groups, identified as solar observatories.
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.. love the sailboats, all lined up for the HS sailing team to take them out when the snow goes and the temps get warmer
An ice crystal halo around the waxing gibbous Moon set in the winter stars of a January night. The 22° halo is most obvious and with a reddish and sharper inner rim., and a bluish and more diffuse outer edge. But a faint inner 8° halo is also visible, a rare halo sometimes called the Van Buijsen Halo (according to Lynch and Livingston in their book Color and Light in Nature; Minnaert also mentions it in his seminal book The Nature of Color and Light in the Open Air). It is not a lens flare as shots taken with the Moon well off to one side of the frame still show the inner halo centred on the Moon. Nor is it an artifact of the exposure blending as it is present on the raw single long-exposure image.
The Moon was in Taurus this night and very close to Mars, shining here as the red point of light just above the Moon. An occultation occured for locatons in the southern U.S. and Mexico this night, but for me in Alberta it was a very close conjunction. Orion is at lower left; Auriga is above the Moon; and Perseus is at upper right.
To retain the disk of the Moon and better capture the scene as the eye saw it, this is a blend of 8 untracked exposures, from 30 seconds to 1/250 second with the RF15-35mm lens at 22mm and f/4 and Canon R5 at ISO 400. Being untracked exposures, the stars are trailed somewhat. Frames manually aligned then blended with luminosity masks created with Lumenzia. A mild glow effect was added with Radiant Photo plug-in.
Steady progress after completing my commission. The south doorway was the main public entrance to the Minster, possibly from the 11th century. It faces the main gate to the town, at the end of Stonegate, which is roughly aligned with one of the main streets of the Roman fortress. These days the public are admitted through the doorway in the north west tower, as this is better for visitor circulation, and exit through this doorway. It was remodelled by George Edmund Street between 1871 and 1880. Various other changes at this time, including the rebuilding of the pinnacles at the corners of the transept facade. I am drawing with a Pentel 0.3mm mechanical pencil and Tombow Mono Zero eraser on A4 cartridge paper from a sketchbook.
NASA's James Webb Space Telescope is aligned across all four of its science instruments, as seen in a previous engineering image showing the observatory's full field of view. Now, we take a closer look at that same image, focusing on Webb's coldest instrument: the Mid-Infrared Instrument, or MIRI.
The MIRI test image (at 7.7 microns) shows part of the Large Magellanic Cloud. This small satellite galaxy of the Milky Way provided a dense star field to test Webb’s performance.
Here, a close-up of the MIRI image is compared to a past image of the same target taken with NASA’s Spitzer Space Telescope’s Infrared Array Camera (at 8.0 microns). The retired Spitzer telescope was one of NASA’s Great Observatories and the first to provide high-resolution images of the near- and mid-infrared universe. Webb, with its significantly larger primary mirror and improved detectors, will allow us to see the infrared sky with improved clarity, enabling even more discoveries.
Image Credit: NASA/JPL-Caltech (left), NASA/ESA/CSA/STScI (right)
#NASAMarshall #jwst #space #telescope
En route from Carnforth to York NRM on 14th February 2020, Gresley A4 Pacific No. 60009 Union of South Africa paused at Hellifield to pick up water.
This is the nebula rich region in the constellation of Monoceros the Unicorn with the dark Cone Nebula (left of centre) and the small V-shaped and bright Hubble’s Variable Nebula at bottom, a reflection nebula that varies in form and brightness. Above the Cone Nebula is the triangular Christmas Tree Cluster, NGC 2264, here upside down as the bright blue star 15 Mon is the base of the tree. The large region of nebulosity is Sharpless 2-273. The V-shaped dark nebula above centre is LDN 1603.
Near 15 Mon is a blue reflection nebula. Another blue reflection nebula IC 2169 and associated star cluster Collinder 95 is at left — I framed the field to contain this nebula. Other bits of reflection nebulosity surround it - clockwise: NGC 2245, NGC 2247 and IC 446 above the main nebula. The rich faint cluster near centre is Trumpler 5.
This is a blend of 8 x 5-minute exposures at ISO 800 unfiltered with 6 x 8-minute exposures at ISO 1600 shot through an Optolong L-Enhance dual-band nebula enhancement filter (it lets through only Oxygen III blue-green and Hydrogen-alpha red to really enhance the nebulosity). All exposures with the Canon EOS Ra mirrorless camera through the SharpStar HNT150 Hyperbolic Newtonian Astrograph at f/2.8, from home on a very clear moonless night January 26, 2020. All stacked, aligned and blended in Photoshop 2020.
This vineyard of finely aligned vines has no crop circles . . .
This photo was taken by a Kowa Super 66 medium format film camera with a KOWA 1:3.5/55 lens and Kowa L39•3C(UV) ø67 filter using Kodak Portra 160 film, the negative scanned by an Epson Perfection V600 and digitally rendered with Photoshop.