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Charles de Gaulle Airport, Terminal 2.
This newly completed terminal is a real photographer's delight...
(Shot in Monochrome mode.)
NASA's Solar Dynamics Observatory came across an oddity that the spacecraft has rarely observed before: a dark filament encircling an active region (Oct. 29-31, 2017). Solar filaments are clouds of charged particles that float above the sun, tethered to it by magnetic forces. They are usually elongated and uneven strands. Only a handful of times before have we seen one shaped like a circle. The black area to the left of the brighter active region is a coronal hole, a magnetically open region of the sun. While it may have no major scientific value, it is noteworthy because of its rarity. The still was taken in a wavelength of extreme ultraviolet light.
Image Credit: NASA/GSFC/Solar Dynamics Observatory
First time I combined focus bracketing/stacking and HDR. I needed HDR obviously to deal with the brightness levels. At the same time, I wanted to have the bulb interiour completely sharp, but the background should be as blurry as possible. So I had to open the aperture to F2.8 and shoot 15 shots (stepping 1). I did 5 brackets with 2EV difference. Post processing was to stack the 5 brackets (Helicon Focus method C) and then merge the HDR in Lightroom. Some global and local adjustments in LR as well.
A view of the stamens opening like tiny parcels unwrapping allowing the filaments to burst out. Cropped and an opening parcel lightly sharpened with the sharpening tool.
The obvious parts of the flower masses are stamens, with the pollen at the tip of the filament; the petals are inconspicuous (see picture). Flower heads vary in colour with species; most are red, but some are yellow, green, orange or white. Each flower head produces a profusion of triple-celled seed capsules around a stem which remain on the plant with the seeds enclosed until stimulated to open when the plant dies or fire causes the release of the seeds. (A few species release the seeds annually.)
Do view large:
This is a scientific capture rather than an aesthetic one — acquired in H-alpha using a Lunt LS60MT with a Powermate 2.5x, from a narrow ROI (region of interest: using only a small part of your sensor (gives higher frame rate (good for lucky imagining))) and later heavily cropped. Despite the low resolution, it illustrates a key solar phenomenon: the continuity between a filament and a prominence. The structure spans across the solar disk as a dark, suspended filament and then extends beyond the limb where it becomes visible in emission as a prominence. Both are manifestations of the same magnetic structure — relatively cool plasma supported in the solar corona, seen in absorption or emission depending on the viewing angle.
A rough image, but it captures the physics — and that's it is about sometimes : Observing what you have been told, a deeper form of knowledge then you form (said Yoda).
The filament in a light bulb is made of a long, incredibly thin length of tungsten metal. In a typical 60-watt bulb, the tungsten filament is about 6.5 feet (2 meters) long but only one-hundredth of an inch thick. The tungsten is arranged in a double coil in order to fit it all in a small space.
Relishing External Filaments.
Hlykkjóttir félagar dökkar sveitir sem skipa borðum svíkja merki höfuðvængir vængir nautahöfuðar slátra björg augljósum nætur,
pestilence dtonnta ionsaí anamacha roinnt claimhte fíochán coirce gairbhe tobann streachailt bhréagach gáirsiúil cuanta cogaí buailte,
flammes accrochées terreurs secrets crimes vengeance conflagrations corps blessant des incendies lames trempées exprimant des meurtres mains souillées,
parole inutili porte strazianti ombre barbariche nemici tempeste che aggrediscono lingue cerniere giganti confusioni gestioni imprinting lavori,
atos arrepiantes setas brilhantes chicoteando costas leis cortadas corpos confinados conjurando demônios comprometendo-se a labutar labirintos da perplexidade,
敵対的な兆候壊れた霊数時間の遠いルール厳しい通路を広げる石を蹴る悪魔を踏みにじる不運な死目覚める黒い雲cな槍を深く届ける深い槍.
Steve.D.Hammond.
Featuring a large filament stretching approx 900,000km across the surface
Lunt LS80Tha/B18/DSII and Grasshopper 3 camera
The giant whitefly, Aleurodicus dugesii
The giant whitefly, Aleurodicus dugesii, is native to Mexico. It has spread rapidly and is now found in many areas elsewhere..
Canon EOS 50D
EF 70-300mm f/4.0-5.6 IS USM
This is image was captured using a 60mm Hydrogen-alpha (Hα) telescope. It is showing the Sun's chromosphere.
There were very interesting features on August 18, 2022. At the top is a filament in the shape of a circle. It is also raised quite a distance above the chromosphere. Going down to the right thee is a very large and thick filament. Just to the left of that filament is a sunspot (AR3081) surrounded by a plage.
Capture location: Elkridge, Maryland USA
Telescope: Lunt LS60T Hα
Double Stack: LS50F Hα
Camera: ZWO ASI178MM
Processing software:
Autostakkert, RegiStax6, Lightroom Classic, Photo Shop
The curved LED filaments of a LED bar light, which are also reflected by the glass of the lamp.
Looking close... on Friday!
Theme: Curves
Shot with Meyer-Optik Orestor 135mm f/2.8 @f8, combined with a 16mm extension tube to lower the MFD
My opening image for the year 2016, the Filaments of Cygnus.
More info and images in my blog:http://www.astroanarchy.blogspot.fi/2016/01/my-first-photo-for-year-2016-filaments.html
Nothing is better to me than being up close with a lightning bolt so you actually see all the filaments you might miss from being further away. Taken on July 27th north of Sierra Vista along Highway 82.
Light?
Have you ever wondered from where light came
If the wondering of light is just a game
If light is playing a trick on our eyes
If light is just a bunch of lies
If light has a temperature cold as ice
If light is actually hot as rice
If light can run around the room
If light will lead us to our doom
If light can catch a traveling ball
If light can hear our pleading call
If light needs us to seeing the dark
If light can produce a menacing bark
If light can flow as fast as sound
If light is only on earth bound
If light can take a human form
If light can get caught up in a storm
I often wonder what light can do
but its secrets are not for me and you
sam ridley
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