Gordan Ugarković
@ugordan.bsky.social
I used to dabble in image processing, mostly with NASA's Cassini spacecraft data. Software engineer by day.
A distant shot of Saturn's system while Cassini was still was on its way. This was taken after they had resolved the condensation residue issue on the ISSNA optics by heating it, and still almost 2 years before Saturn arrival. Magnified 2x from original pixel scale.
Taken on 2002-10-21 14:43 UTC
Taken on 2002-10-21 14:43 UTC
September 20, 2025 at 1:25 PM
A distant shot of Saturn's system while Cassini was still was on its way. This was taken after they had resolved the condensation residue issue on the ISSNA optics by heating it, and still almost 2 years before Saturn arrival. Magnified 2x from original pixel scale.
Taken on 2002-10-21 14:43 UTC
Taken on 2002-10-21 14:43 UTC
Natural color image of Titan taken by the Cassini spacecraft's narrow-angle camera on 2013-06-10 15:17 UTC.
Uncompressed quality image available at flic.kr/p/vQxGot
Uncompressed quality image available at flic.kr/p/vQxGot
September 14, 2025 at 6:25 AM
Natural color image of Titan taken by the Cassini spacecraft's narrow-angle camera on 2013-06-10 15:17 UTC.
Uncompressed quality image available at flic.kr/p/vQxGot
Uncompressed quality image available at flic.kr/p/vQxGot
Cassini wide-angle RGB view taken 2011-09-13 11:31 UTC.
Distance to Enceladus: 277 000 km
Distance to Tethys: 213 000 km
Phase angle: 135 deg
Distance to Enceladus: 277 000 km
Distance to Tethys: 213 000 km
Phase angle: 135 deg
September 13, 2025 at 1:26 PM
Cassini wide-angle RGB view taken 2011-09-13 11:31 UTC.
Distance to Enceladus: 277 000 km
Distance to Tethys: 213 000 km
Phase angle: 135 deg
Distance to Enceladus: 277 000 km
Distance to Tethys: 213 000 km
Phase angle: 135 deg
In the shadow of the Starship program, Falcon 9 quietly achieved 2 milestones: the first booster to launch 30 times and the 400th droneship recovery.
F9 is literally the U.S. workhorse rocket right now with reliability unmatched by any other SLV.
F9 is literally the U.S. workhorse rocket right now with reliability unmatched by any other SLV.
August 29, 2025 at 8:39 PM
In the shadow of the Starship program, Falcon 9 quietly achieved 2 milestones: the first booster to launch 30 times and the 400th droneship recovery.
F9 is literally the U.S. workhorse rocket right now with reliability unmatched by any other SLV.
F9 is literally the U.S. workhorse rocket right now with reliability unmatched by any other SLV.
Contrast-enhanced views of Tethys, Dione and Rhea, as seen by Cassini's narrow-angle camera on 29 June 2008. RGB filters, magnified 1.5x from original pixel scale. Not to relative scale, but representing the angular diameter as seen by Cassini at the time.
live.staticflickr.com/3574/3415420...
live.staticflickr.com/3574/3415420...
May 23, 2025 at 8:40 PM
Contrast-enhanced views of Tethys, Dione and Rhea, as seen by Cassini's narrow-angle camera on 29 June 2008. RGB filters, magnified 1.5x from original pixel scale. Not to relative scale, but representing the angular diameter as seen by Cassini at the time.
live.staticflickr.com/3574/3415420...
live.staticflickr.com/3574/3415420...
Cassini, seven narrow-angle image RGB footprint mosaic of the unlit side of the rings on 2 Jun 2007 from a distance of 2.24 mil km and at a phase angle of 54 degrees.
Details at: www.flickr.com/photos/ugord...
live.staticflickr.com/3257/2693436...
Details at: www.flickr.com/photos/ugord...
live.staticflickr.com/3257/2693436...
May 17, 2025 at 9:45 PM
Cassini, seven narrow-angle image RGB footprint mosaic of the unlit side of the rings on 2 Jun 2007 from a distance of 2.24 mil km and at a phase angle of 54 degrees.
Details at: www.flickr.com/photos/ugord...
live.staticflickr.com/3257/2693436...
Details at: www.flickr.com/photos/ugord...
live.staticflickr.com/3257/2693436...
Centerpiece of the first Cassini Saturn eclipse mosaic, taken on Sept. 15, 2006, wide-angle camera view.
RGB data with some gapfill using methane and violet filters where the sun's glare caused bad CCD charge bleed.
live.staticflickr.com/1343/1140188...
RGB data with some gapfill using methane and violet filters where the sun's glare caused bad CCD charge bleed.
live.staticflickr.com/1343/1140188...
May 11, 2025 at 12:34 PM
Centerpiece of the first Cassini Saturn eclipse mosaic, taken on Sept. 15, 2006, wide-angle camera view.
RGB data with some gapfill using methane and violet filters where the sun's glare caused bad CCD charge bleed.
live.staticflickr.com/1343/1140188...
RGB data with some gapfill using methane and violet filters where the sun's glare caused bad CCD charge bleed.
live.staticflickr.com/1343/1140188...
Current challenge: Work out the workings of ESA Rosetta VIRTIS imaging spectrometer's EDR format and attempt to calibrate the Earth flyby #1 (2005) data spectral cube into an sRGB color image.
Prospects: VERY UNCERTAIN.
How it's going:
Prospects: VERY UNCERTAIN.
How it's going:
May 8, 2025 at 11:11 PM
Current challenge: Work out the workings of ESA Rosetta VIRTIS imaging spectrometer's EDR format and attempt to calibrate the Earth flyby #1 (2005) data spectral cube into an sRGB color image.
Prospects: VERY UNCERTAIN.
How it's going:
Prospects: VERY UNCERTAIN.
How it's going:
One of my favorite images from the Cassini era. H/T to John Spencer, Southwest Research Institute, Boulder, CO for reminding me of it.
live.staticflickr.com/6193/6209087...
live.staticflickr.com/6193/6209087...
May 4, 2025 at 2:51 PM
One of my favorite images from the Cassini era. H/T to John Spencer, Southwest Research Institute, Boulder, CO for reminding me of it.
live.staticflickr.com/6193/6209087...
live.staticflickr.com/6193/6209087...
If you know, you know.
April 21, 2025 at 1:44 PM
If you know, you know.
post a ship that's not Star Wars or Star Trek
March 24, 2025 at 10:39 AM
post a ship that's not Star Wars or Star Trek
Cassini NAC natural color view of Daphnis taken on 2010-07-05.
Gravitational disturbances by the moon are visible at the inner edge of the Keeler gap, inside which the moon orbits. Prograde motion is to the right.
Distance: 73 000 km
Phase angle: 51 deg
live.staticflickr.com/6081/6063427...
Gravitational disturbances by the moon are visible at the inner edge of the Keeler gap, inside which the moon orbits. Prograde motion is to the right.
Distance: 73 000 km
Phase angle: 51 deg
live.staticflickr.com/6081/6063427...
March 11, 2025 at 8:08 PM
Cassini NAC natural color view of Daphnis taken on 2010-07-05.
Gravitational disturbances by the moon are visible at the inner edge of the Keeler gap, inside which the moon orbits. Prograde motion is to the right.
Distance: 73 000 km
Phase angle: 51 deg
live.staticflickr.com/6081/6063427...
Gravitational disturbances by the moon are visible at the inner edge of the Keeler gap, inside which the moon orbits. Prograde motion is to the right.
Distance: 73 000 km
Phase angle: 51 deg
live.staticflickr.com/6081/6063427...
Fuck Trump, fuck J.D. Vance, fuck Putin
February 28, 2025 at 10:50 PM
Fuck Trump, fuck J.D. Vance, fuck Putin
Mercury as seen by the MESSENGER spacecraft. Narrow-angle mosaic (30+ image footprints) was colorized using the lower resolution wide-angle color data.
Credit: NASA / JHUAPL / Gordan Ugarković
Click the link for the full res image.
live.staticflickr.com/3155/2686293...
Credit: NASA / JHUAPL / Gordan Ugarković
Click the link for the full res image.
live.staticflickr.com/3155/2686293...
February 23, 2025 at 9:28 PM
Mercury as seen by the MESSENGER spacecraft. Narrow-angle mosaic (30+ image footprints) was colorized using the lower resolution wide-angle color data.
Credit: NASA / JHUAPL / Gordan Ugarković
Click the link for the full res image.
live.staticflickr.com/3155/2686293...
Credit: NASA / JHUAPL / Gordan Ugarković
Click the link for the full res image.
live.staticflickr.com/3155/2686293...
Natural color, 5-frame Cassini narrow-angle mosaic of the sunlit side of the left ring ansa.
Click the link for the full res 4500x1000 pixel version.
live.staticflickr.com/2347/2614029...
Click the link for the full res 4500x1000 pixel version.
live.staticflickr.com/2347/2614029...
February 23, 2025 at 8:48 AM
Natural color, 5-frame Cassini narrow-angle mosaic of the sunlit side of the left ring ansa.
Click the link for the full res 4500x1000 pixel version.
live.staticflickr.com/2347/2614029...
Click the link for the full res 4500x1000 pixel version.
live.staticflickr.com/2347/2614029...
Might as well throw in my color adjustment attempt into the mix. No geometric correction (obviously, look at the way Earth looks LOL)
February 22, 2025 at 9:26 AM
Might as well throw in my color adjustment attempt into the mix. No geometric correction (obviously, look at the way Earth looks LOL)
Approx. natural color image of Epimetheus taken by Cassini's narrow-angle camera on 2010-04-07.
Distance: 104 500 km
Phase angle: 63 deg
Magnified 2x for better visibility.
live.staticflickr.com/3802/1153620...
Distance: 104 500 km
Phase angle: 63 deg
Magnified 2x for better visibility.
live.staticflickr.com/3802/1153620...
February 22, 2025 at 8:34 AM
Approx. natural color image of Epimetheus taken by Cassini's narrow-angle camera on 2010-04-07.
Distance: 104 500 km
Phase angle: 63 deg
Magnified 2x for better visibility.
live.staticflickr.com/3802/1153620...
Distance: 104 500 km
Phase angle: 63 deg
Magnified 2x for better visibility.
live.staticflickr.com/3802/1153620...
VERY rough approximation of the camera pointing at the time:
February 21, 2025 at 8:48 PM
VERY rough approximation of the camera pointing at the time:
Rosetta view of Earth's nightside taken on approach during the 2nd Earth flyby. WAC red, green and UV375 filter composite.
Green auroral glow visible at the northern latitudes.
2007-11-13 19:23 UTC
Distance: 60 000 km
Phase ange: 158 deg
live.staticflickr.com/7168/6735852...
Green auroral glow visible at the northern latitudes.
2007-11-13 19:23 UTC
Distance: 60 000 km
Phase ange: 158 deg
live.staticflickr.com/7168/6735852...
February 21, 2025 at 8:07 PM
Rosetta view of Earth's nightside taken on approach during the 2nd Earth flyby. WAC red, green and UV375 filter composite.
Green auroral glow visible at the northern latitudes.
2007-11-13 19:23 UTC
Distance: 60 000 km
Phase ange: 158 deg
live.staticflickr.com/7168/6735852...
Green auroral glow visible at the northern latitudes.
2007-11-13 19:23 UTC
Distance: 60 000 km
Phase ange: 158 deg
live.staticflickr.com/7168/6735852...
Mars Dead Ahead.
Rosetta OSIRIS NAC RGB taken 2007-02-24 18:28 UTC.
Distance: 240 800 km
Phase angle: 15.7 deg
live.staticflickr.com/7012/6733745...
Rosetta OSIRIS NAC RGB taken 2007-02-24 18:28 UTC.
Distance: 240 800 km
Phase angle: 15.7 deg
live.staticflickr.com/7012/6733745...
February 21, 2025 at 6:49 PM
Mars Dead Ahead.
Rosetta OSIRIS NAC RGB taken 2007-02-24 18:28 UTC.
Distance: 240 800 km
Phase angle: 15.7 deg
live.staticflickr.com/7012/6733745...
Rosetta OSIRIS NAC RGB taken 2007-02-24 18:28 UTC.
Distance: 240 800 km
Phase angle: 15.7 deg
live.staticflickr.com/7012/6733745...
Here's how it looked a from a different vantage point and this time by the wide-angle camera (at 6:30 o'clock).
2012-05-21.
Distance: 194 000 km
Phase: 164 deg
Click on the actual links to get the full PNG quality as always and not a JPGed BlueSky version.
live.staticflickr.com/8124/8611671...
2012-05-21.
Distance: 194 000 km
Phase: 164 deg
Click on the actual links to get the full PNG quality as always and not a JPGed BlueSky version.
live.staticflickr.com/8124/8611671...
February 21, 2025 at 6:05 PM
Here's how it looked a from a different vantage point and this time by the wide-angle camera (at 6:30 o'clock).
2012-05-21.
Distance: 194 000 km
Phase: 164 deg
Click on the actual links to get the full PNG quality as always and not a JPGed BlueSky version.
live.staticflickr.com/8124/8611671...
2012-05-21.
Distance: 194 000 km
Phase: 164 deg
Click on the actual links to get the full PNG quality as always and not a JPGed BlueSky version.
live.staticflickr.com/8124/8611671...
Natural color image of Titan's southern polar vortex as seen by Cassini's narrow angle camera.
Taken 2012-06-26 23:02 UTC.
Distance: 484 000 km
Phase angle: 111 deg
live.staticflickr.com/8122/8614252...
Taken 2012-06-26 23:02 UTC.
Distance: 484 000 km
Phase angle: 111 deg
live.staticflickr.com/8122/8614252...
February 21, 2025 at 5:53 PM
Natural color image of Titan's southern polar vortex as seen by Cassini's narrow angle camera.
Taken 2012-06-26 23:02 UTC.
Distance: 484 000 km
Phase angle: 111 deg
live.staticflickr.com/8122/8614252...
Taken 2012-06-26 23:02 UTC.
Distance: 484 000 km
Phase angle: 111 deg
live.staticflickr.com/8122/8614252...
Rhea occulting Dione. Cassini narrow-angle camera natural color composite taken on 2011-02-03.
Distance to Rhea: 1.19 million km
Distance to Dione: 1.94 million km
Phase angle: 75 deg
Magnified 2x from original pixel scale.
live.staticflickr.com/7028/6822888...
Distance to Rhea: 1.19 million km
Distance to Dione: 1.94 million km
Phase angle: 75 deg
Magnified 2x from original pixel scale.
live.staticflickr.com/7028/6822888...
February 15, 2025 at 6:22 PM
Rhea occulting Dione. Cassini narrow-angle camera natural color composite taken on 2011-02-03.
Distance to Rhea: 1.19 million km
Distance to Dione: 1.94 million km
Phase angle: 75 deg
Magnified 2x from original pixel scale.
live.staticflickr.com/7028/6822888...
Distance to Rhea: 1.19 million km
Distance to Dione: 1.94 million km
Phase angle: 75 deg
Magnified 2x from original pixel scale.
live.staticflickr.com/7028/6822888...
