Kstars/Stellarium also has the ephemerides of satellites, so with Pulsars discussed as a future GPS for interstellar travel ( ) those seem like truly missing. They have a list of supernovae, so why not pulsars. While I do not know if I truly want to use kstars or stellarium or neither for the scripting, somehow it feels that this data should be there. This is where kstars gets extra info for asteroids or so. So, from that bit of a downturn from my kstars experience I thought that I should first somehow find a way to offer that data as a kstars module. Back on the Wikipedia page I found a ref to which is kind of a funny software/data mixup, but which indeed knew the pulsar names of that table 3 and found me same coordinates and frequencies: I then tried to search for the name in kstars - nothing. Anyway, not knowing much about how to do it, I felt confident that I could somehow script something that orders telescope time of some sort to take a picture every other week of I don't know how many pulsars.īut where are they? I found table 3 in with something that I interpreted as coordinates and looked a first one up in kstars.

The Wikipedia page on pulsars has some nice pictures on and I had happily procrastinated into an amateur astronomer who took time lapse videos on a pulsar - and a more professional version on - the other videos of DeepSkyVideos are also nice. A couple of minutes ago the idea arose to look at the pulsars that finds. For something like 3 years I have an account with them and once put some money in, just I never not really had anything to look for. Section 5 of the Landsat 7 Data Users Handbook provides more techicnal information about Definitive Ephemeris.This site is a great attractor.

Telemetry information in the form of Two-Line Element (TLE) Set - which lists the orbital elements that describe the state (position and velocity) of the spacecraft - is listed on.

There is no Definitive Ephemeris for Landsat 8, since the Payload Correction Data (PCD) for the satellite is very accurate. Newly-acquired Landsat 7 scenes are initially processed with predicted ephemeris, and are reprocessed with Definitive Ephemeris applied within 1 to 2 days of acquisition. Definitive Ephemeris shows the position and velocity of the spacecraft at the time imagery is collected, and shows the position and velocity of the satellites in one-minute intervals. An ephemeris is a set of data that provides the assigned places of a celestial body (including a manmade satellite) for regular intervals.

Stellarium download latest ephemeris