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Update Perseid shower
Hi all,
Thanks to all who have contributed to my thread, I wanted to know also about radio observations and got that without having to ask. The last 2 nights I have looked for 1 hour from 11 pm BST to midnight BST but have had no luck at all. My night sky at this time only gives a faint hint of the Milky way so I struggle to see below 4.5 magnitude. However I counted at least 10 artificial satellites each night. I shall have to get out the lounger for a better vertical view! . It is also essential to wrap up warm with several layers of clothes. I intend to try to photograph at least one trail with my wide eye lens when the shower is at its maximum, the hints and tips on the photography site will assist greatly. I just thought it was point and hope and forgot that dewing up is not only a problem for telescopes! |
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Update Perseid shower
In message mLT6o.57820$zT3.48951@hurricane, CJ
writes Hi all, Thanks to all who have contributed to my thread, I wanted to know also about radio observations and got that without having to ask. The last 2 nights I have looked for 1 hour from 11 pm BST to midnight BST but have had no luck at all. My night sky at this time only gives a faint hint of the Milky way so I struggle to see below 4.5 magnitude. However I counted at least 10 artificial satellites each night. I shall have to get out the lounger for a better vertical view! . It is also essential to wrap up warm with several layers of clothes. I intend to try to photograph at least one trail with my wide eye lens when the shower is at its maximum, the hints and tips on the photography site will assist greatly. I just thought it was point and hope and forgot that dewing up is not only a problem for telescopes! Hi CJ, It's worth remembering too that although the Perseid radiant is circumpolar from mid-northern latitudes, it climbs steadily throughout the night. The radiant is lowest in the early evening at around 20 - 30 degrees above the northern horizon. It then climbs steadily and will be almost overhead around dawn. From a meteoroid's point of view, this means that it approaches your patch of visible sky edge-on in the evening, whereas it approaches straight-on in the pre-dawn hour. So, your sky presents a increasing sized target, for the stream, throughout the night and this in turn means, all other things being equal, you'll see more Perseids in one hour of observing after midnight, than you'd see in one hour of observing before midnight. You'll also see more sporadic meteors after midnight too, as you are carried round onto the side of Earth facing into the direction of the Earth's travel around the Sun. That's also why, away from the major showers, the radio-meteors observers see a steadily varying diurnal cycle of meteor activity - highest at local time 06:00 (on the "front" of the earth) and minimum at local time 18:00 (on the "back" of the Earth). http://www.rmob.org/livedata/main.php Good luck, -- David Entwistle |
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