18.12.2016

B&W version of adjacent.

I think like this better as shows structure of tree, emphasises trunk, and yet makes leaves quite feathery, like the bronchioles of a lung.

This was for a B&W challenge.

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Woman w Flowers

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kodak portra

rolleiflex 622 | zeiss tessar 75mm f/3.5

food & lifestyle photography

atwater village / Los Angeles

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Tabletop Afternoon in B&W

vẫn là đồ cũ =p~

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cái này hình như đụng hàng w CCPie xD sr em nheeeeeeeeeeeeeeeeee =))

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có phải mình hơi lạm dụng qá mâí cái icon thỏ k =)))

-Sóc Grey##

Para las imágenes en B&W me gusta el contraste de tonos donde el color negro es un protagonista importante.

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Just off to a coffee morning at the W.I.!

糖衣系列

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! ربّما غدٍ أو بعد غد

، ربّما بعد سنينٍ لاتُعد

~ ربّما ذات مساءٍ نلتقي

* (w) في طريقٍ عابرٍ دون قصد

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A N&W (WAB) commuter arriving Chicago from Orland Park with a GP40 in charge. Sharpe looking cars for some lowly commuter service.

B&W pattern design ...

Pic in my BlackandWhite Series # 4 ... Pic # 1 ...

Pic taken Sept 5, 2021

Thanks for your views, faves, invites and comments ... (c)rebfoto

"Sou repreendido por escrever apenas sobre acontecimentos medíocres, por não ter heróis positivos. [...]

Levamos uma vida provinciana, as ruas das nossas cidades nem sequer são pavimentadas, nossas aldeias são pobres, nosso povo vive em péssimo estado. Na juventude, chilreamos feito pássaros em cima de um monte de esterco; aos quarenta já somos velhos e começamos a pensar na morte. Que espécie de heróis somos nós? [...]

Gostaria apenas de dizer com toda a honestidade às pessoas: reparem, reparem como vivem mal, e que vida enfadonha estão levando. O importante é que as pessoas compreendam isso; se compreenderem, inventarão uma vida diferente e melhor. O homem torna-se melhor quando lhe mostramos como ele é."

Anton Tchekhov, 1900. (Sem trama e sem final; Ed. Martins Fontes; Tradução de Homero Freitas de Andrade)

Rossmann 200

A trio of ESA engineers took to the roof of the Agency’s technical heart to link up with a satellite the size of a shoebox as it sped overhead.

The team deployed a portable, self-made ground station to acquire W-band microwave signals from ESA’s W-Cube mission, as part of an effort to better understand how this portion of the electromagnetic spectrum interacts with the atmosphere, encouraging its use for satellite communications.

Put in place within half an hour, the ground station was improvised from various outcomes of past ESA projects, combined with a computerised telescope mount usually employed for amateur astronomy. But at the first try the station succeeded in tracking and gathering signal data from W-Cube as it performed a ten minute pass over the ESTEC technical centre in Noordwijk, the Netherlands.

ESA Young Graduate Trainee Hugo Debergé, the microwave engineer responsible for building the station, commented: “Of all the thousands of satellites in space, we are currently pointing at the very first 75 GHz beacon in flight, and receiving signals from it – it’s amazing!”

W-Cube, launched in 2021, was developed through ESA’s Advanced Research in Telecommunications, ARTES, programme, to explore the use of W-band for future satellite missions. This particular millimetre-band – used on Earth for various commercial applications such as automotive radar and point-to-point wireless links – is being adopted for use in space, offering very high data throughput across a largely untrafficked span of the electromagnetic spectrum.

But the International Telecommunications Union, which assigns frequencies for use, has only limited modelling and prediction models to show how W-band signals propagate through Earth’s atmosphere and weather conditions. W-Cube was flown to help shrink this blind spot and prove the feasibility of future space missions operating using W-band.

A single fixed ground station was put in place to track W-Cube, at the premises of mission prime contractor Joanneum Research at Graz in Austria, with another one in preparation by VTT Research in Finland.

The nanosatellite itself – a ‘three-unit’ CubeSat, meaning it has been built up from three standardised 10-cm boxes – was constructed by Kuva Space in Finland (previously Reaktor Space Lab) with the W-band payload coming from VTT.

“W-Cube itself is working well, and only a few days ago another satellite carrying an experimental W-band payload was put in orbit from the University of Stuttgart,” explained ESA microwave engineer Vaclav Valenta. “So we decided to build our own station based on available hardware and chips from past projects in our lab, then assigned the challenging job of building it to Hugo through ESA’s Young Graduate Trainee programme. The satellite is switched on for acquisitions from Austria but as we found we can still track it from the Netherlands.

“We’re excited by today’s success on our first try, and our next plan to fine-tune our station design to make it truly portable. Also, our intention is to set up a permanent W-band station here at ESTEC. This design, combined with the tracking techniques we’re deploying, will certainly become the basis for other mobile W-band stations.”

Digital payload engineer Marek Peca equipped the portable ground station with motion control software and geodetic calculations: "We began by homing in on the Sun, and its output of radio white noise, serving as a reference point so the ground station knew where to look for W-Cube as it passed over our heads – a pinhole camera taped to the side of the antenna gave us a coarse visual confirmation of being centred on the Sun; we'll improve on this with building-mounted radio beacons in the future. But it all worked well: today’s success makes this only the second ground station in the world to acquire W-band signals from orbit!”

Michael Schmidt of Joanneum Research is Principal Investigator for the W-Cube mission: “I congratulate the ESTEC team in achieving this goal. I know from experience it is no easy task to receive the satellite’s very weak signal. Their work is providing important additional measurements in different climate zones from Graz and Helsinki, and the mobile nature of their ground station means it can be located in other locations as well, helping to improve our W-band propagation models and learning more the use of low-orbiting satellites for propagation experiments.”

Marek processed some 32GB of captured radio-frequency data to confirm that the first full pass of the satellite signal had been correctly tracked, representing six and a half minutes of the full pass. See plots from the W-Cube pass here and here. Read about the open source element of the project to use telescope mounts to track satellites and celestial objects here.

Credit: ESA-G. Porter

HUD WHIT 25 COLORS, SOLE-BODY & 2 METALS

Maitreya-Belleza - Slink

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This one just needed a mono conversion.

Before assimilating the Chessie (BR&P) 4th Sub, the G&W got trackage rights from P&L Jct. up to Rochester and down to Silver Springs. Here a Silver Springs Turn is heading back to P&L Jct. late in the day at the station in Warsaw, NY on June 30, 1986. The G&W "borrowed" LA&L 425 for a brief time and that is why it is part of the power consist.

I have been nominated by Andy Gant to carryout the 5 Day B&W challenge. This is Day 5.

Many thanks Andy!

www.flickr.com/photos/tosh53/

5 of 5 B&W challenge

www.flickr.com/groups/2812175@N21/ 5 Day B&W Challenge Group

zasina.art.pl/gallery/

B.W.

B.W

Umpqua Lighthouse State Park, OR

Voigtländer Bessa R2A

35mm

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Norfolk & Western Railway

1950 "J" class 4-8-4

"Northern"-type steam locomotive

N&W 611

"Spirit of Roanoke" / "Queen of Steam"

Millennium Bridge to S Pauls. Tried an OTT slightly IR processing here. Any thoughts?

I was challenged to a B&W series of images. Some will be created by the camera, some in editing software. The shadow of the trees sort of looks like ghoulish hands reaching for the bridge.

G&W 46 leads the "salt shaker" down the old main at Brooks Ave. Yard in Gates, NY on June 23, 1986. Chessie cats for RS97 are just starting to head down into the South end of the yard to get its train. The G&W got trackage rights into Rochester and to Silver Springs for its salt traffic, eliminating the Conrail turn that ran out of Rochester down to P&L Jct., and eliminating the D&H turn that ran to Griegsville.

An SD40-2 stopped at the west end of the Connellsville CSX Yard with 16 tank cars plus buffer cars. The crew had to stop here because they did not know the switches to throw to get to 29 Track and a CSX employee had to show them. WE 6354 was one of two locomotives to play AWVR 1206 in the "Unstoppable" movie. Note that the Youghiogheny River is so muddy it almost looks like chocolate from all the recent heavy storms.