Comments : Comments Off on Wallpaper Wednesday: SDO and Sunspots
Categories : Instruments, Kodaikanal, NASA, Photography, Video
“Sweeping Arches and Loops”, solar magnetic activity viewed in the ultraviolet, June 30, 2014.
Looking at some of the photos returned by NASA’s Solar Dynamics Observatory (SDO), you’d think contemporary solar observing had little in common with what was being done at Kodaikanal c. 1900-1910. But in addition to the dramatic images of solar loops like the one shown above, SDO also sends back sunspot records that closely resemble the photos and charts produced by C. Michie Smith, John Evershed, and company.
“Spots Galore,” July 8, 2014. Image credit: Solar Dynamics Observatory/NASA
According to SDO/NASA:
“The Sun sported a whole slew of substantial sunspots over the past 11 days (July 1-10, 2014). This movie and still show the Sun in filtered white light speckled with more and larger sunspots than we have seen in quite some time. Sunspots are darker, cooler regions on the Sun created by intense magnetic fields poking through the surface. The Sun may have passed its peak level of activity, but it will still be producing many more sunspots and solar storms during the rest of this solar cycle. The still image was taken on July 8 at 22:24 UT.”
Visit the NASA/SDO gallery to see more images of solar activity. Like the two above images, most are stills excerpted from videos. Click through each image to reach the links to .mov and .mp4 files.
Comments : Comments Off on David Malin, The Invisible Universe
Categories : Photography
Dust and Gas Adrift in Orion (UKS 1). ©Anglo-Australian Observatory; ©Anglo-Australian Observatory/Royal Observatory, Edinburgh; ©Malin/IAC/RGO; ©Malin/Pasachoff/Caltech
The Invisible Universe, the lovely online exhibition of David Malin’s astrophotography at the Joseph Bellows Gallery, will be available for viewing for at least a couple more weeks. According to the gallery site, it will be viewable through April 2, 2014. This is one exhibition I wish I could view in person—there are few things more stunning than platinum-palladium prints, regardless of the subject.
David Malin was at the Anglo-Australian Observatory (now the Australian Astronomical Observatory, AAO) for twenty-six years as a photographic scientist-astronomer. If you are a fan of astrophotography, you have undoubtedly seen his most popular books, The Invisible Universe (1999) and Ancient Light (Phaidon, 2009).
The AAO owns the copyright for any of Malin’s images that required the use of the observatory’s instruments. David Malin Images manages the copyrights: follow this link for more information about photosales and reproduction rights.