Hi Cees, Thank you for your insightful write-up! I will try these directions in the next few nights. Cheers, Tomi On Sat, Oct 8, 2022 at 1:44 PM C. Bassa <cgbsat_at_gmail.com> wrote: > Hi Tomi, > > Thanks for sharing your observations. > > On Fri, Oct 7, 2022 at 5:56 PM Tomi Simola via Seesat-l > <seesat-l_at_satobs.org> wrote: > > After a long cloudy period I finally had a clear night. Only three > > observations of two classifieds. I have to find a better part of the sky > > for better "traffic". Learning by doing! > > The best approach to capture more satellites is to observe at lower > elevations above the horizon. The satellites will be at larger > distances, and hence fainter, compared to observing them close to > zenith, but they also move slower, so the integrated brightness in a > video camera is still comparable, simply because the satellites move > slower and spend more time illuminating a camera pixel. From > experience I've found that between 30 and 50 degrees elevation works > well. You also have the added advantage that as the satellites move > slower, they spend more time in your field-of-view, so you can measure > more positions and cover more of the satellites' orbit. > > On top of that, several of the classified satellites operating in > constellations with a shared orbital altitude and orbital inclination, > and as a result, they can be observed at different parts of your local > sky more often than in other parts. When projecting the satellite > subpoint on Earth, you'll find that it will spend fractionally more > time near the latitudes close to the positive and negative value of > the inclination. As a result, they will spend more time in those parts > of the sky where the inclination at that orbital altitude is projected > onto the sky. For my location near 53 deg North, the Starlink > satellites in the 53 deg orbits have that overdensity for a line > running basically West to East through my zenith. > > Of the classified satellites, the NOSS objects have such an > overdensity that is well placed for your latitude. These satellites > are at ~1100km in 63.4 deg inclination orbits, which means that the > overdensity is high in your sky at 60 deg North. Good locations to > point your camera are near 62 deg azimuth (ENE) or 298 deg azimuth > (WNW) between 30 and 40 deg elevation. > > Regards, > Cees > _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Sat Oct 08 2022 - 10:20:41 UTC
This archive was generated by hypermail 2.4.0 : Sat Oct 08 2022 - 15:20:41 UTC