From a million miles away, NASA camera shows moon crossing face of Earth

Post by RogerL » Thu, Aug 06, 2015, 1:35 PM UTC

lqdc13 wrote: post #25

mnw21cam wrote: post #20

Earlier quoted context omitted.

You mean like the moon? Yes. You mean like meteosat? No. A 4 metre wide object is going to be such a small proportion of the size of a single pixel that it will be completely invisible.

Does anyone know why they decided to go with just a 4 megapixel camera? I guess they could settle for taking more narrow images and recombining later but it seems better to take one image and crop if they are just interested in small parts. Plus you have the option for digital zoom.

Post by LesZedCB » Thu, Aug 06, 2015, 1:38 PM UTC

kenbellows wrote: post #92

Honest question: Why don't the clouds seen on Earth show any activity or movement over the course of this time lapse?

Post by lyschoening » Thu, Aug 06, 2015, 1:50 PM UTC

LesZedCB wrote: post #93

kenbellows wrote: post #92

Honest question: Why don't the clouds seen on Earth show any activity or movement over the course of this time lapse?

It's only about 20 pictures at 30 second intervals each, which is only 10 minutes. From a million miles away, you wouldn't see noticeable changes in ten minutes. Much like when you are flying in a plane over the ocean and the waves look still.

Post by mattlutze » Thu, Aug 06, 2015, 2:16 PM UTC

2Pacalypse- wrote: post #78

UserRights wrote: post #74

It is really cool how the NASA gives us a better understanding of the universe and our place in it by publishing all these nice pictures. However, I would like to have one easy accessible source for all the nice pictures that is daily updated and could be synchronized to a local school server e.g. with rsync. Is there one "ḧere-are-all-the-pics"-ftp server anywhere? It is quite time consuming to browse the hundreds o…

Not quite what you requested, but NASA's Astronomy Picture of the Day[1] is very cool. It has an archive dating back to the 1995! [1] - http://apod.nasa.gov/apod/

Post by ised » Thu, Aug 06, 2015, 2:25 PM UTC

UserRights wrote: post #74

It is really cool how the NASA gives us a better understanding of the universe and our place in it by publishing all these nice pictures. However, I would like to have one easy accessible source for all the nice pictures that is daily updated and could be synchronized to a local school server e.g. with rsync. Is there one "ḧere-are-all-the-pics"-ftp server anywhere? It is quite time consuming to browse the hundreds o…

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