SATGUS is a 12U CubeSat, I don't know the mass, but it seems that 20kg is a reasonable assumption. As with all CubeSats, they didn't use a rocket just for it, it is an auxiliary payload to a big satellite mission.
According to Wikipedia the Falcon 9 has a payload ratio of about 4%, and assuming everything else is propellant (not that far off), that's about 500kg of propellant to launch that satellite.
But propellant is mostly oxygen, let's say between 2:1 and 3:1 oxygen:fuel, it means about 150 kg of kerosene to launch that satellite. That's your fossil fuel usage. Similar to what it takes to bring a passenger across the Atlantic on a typical airliner. It means that taking these pictures from space burns less fossil fuel than overseas vacation pictures.
Of course, there is probably a lot more fossil fuel burned during the process than by the launch itself: building and transporting the parts, business travels, powering the servers, etc... But the same can be said of most endeavors at this scale.
According to Wikipedia the Falcon 9 has a payload ratio of about 4%, and assuming everything else is propellant (not that far off), that's about 500kg of propellant to launch that satellite.
But propellant is mostly oxygen, let's say between 2:1 and 3:1 oxygen:fuel, it means about 150 kg of kerosene to launch that satellite. That's your fossil fuel usage. Similar to what it takes to bring a passenger across the Atlantic on a typical airliner. It means that taking these pictures from space burns less fossil fuel than overseas vacation pictures.
Of course, there is probably a lot more fossil fuel burned during the process than by the launch itself: building and transporting the parts, business travels, powering the servers, etc... But the same can be said of most endeavors at this scale.