Wave at Saturn -- Blog by Preston Dyches
Wave at Saturn -- Blogs
Get an Advance Look at the Wave at Saturn Images with Cassini’s Raw Image Gallery
By Preston Dyches
July 17, 2013
What do we mean by “raw” images?
Basically, it means they are unprocessed, with none of their brightness, sharpness or other attributes enhanced. There’s no color yet. Images that will later be combined to create mosaics sit tiled before you like puzzle pieces waiting to be assembled. Plus the raws still have all of their “flaws,” like dust donuts, cosmic ray hits and hot pixels. All of the work that goes into making a breathtaking final image is yet to be done. Plus, the raw images are presented in a compressed format that makes it easy for most people to access them.
Even in their unpolished state, you can find some dazzling views in the raw gallery, and even produce your own image mosaics and color composites with a little practice. There are tutorials available from a variety of sources on the web. Whole communities of enthusiasts have sprung up to process, discuss and enjoy these views from space.
Using the Cassini Raw Image Gallery
If you just want to see the latest views, you can click the top arrow to browse the latest 500 images that have been added to the raw gallery. This is good for seeing if images from an observation like the Wave at Saturn event or a flyby of your favorite Saturnian moon have been received and ingested into the gallery for viewing.
Finding Wave at Saturn images in the raw gallery
The images that will make up the new mosaic will not appear online immediately after they are taken. Cassini sends images and other data to Earth during scheduled periods called downlinks where the antennas of the Deep Space Network listen for the spacecraft’s transmission. High-priority observations like the Wave at Saturn images show up in the raw gallery quickly, while lower priority observations can take a couple of days to appear.
Images from the new mosaic should start showing up in the raw gallery on the morning of Saturday, July 20 (nominal time is around 7 a.m. Pacific). If you want to see all of the images from this observation, use the following raw image search settings: Target: Saturn-Rings, Observation time: July 19 to 20, 2013.
(Update, 7/20/13): For best results, try Target: Saturn-Rings and Saturn-ERING, Observation time: July 18 to 20, 2013.
For the narrow-angle images of the Earth and Moon, try Camera: Narrow-angle, Date range: 7/18-7/20).
The finished product to be published by the Cassini team will be painstakingly assembled over the next few weeks into what will likely be one of the most memorable views of the entire mission. Using the raw images, you can get an early glimpse of what Cassini spies on July 19, when we all step outside to wave.
Preston Dyches works in public engagement at JPL. He supported Cassini’s imaging team during the primary mission (2004 to 2008), writing image captions and helping produce many of Cassini’s incredible views.