Astronomy question |
Astronomy question |
 Jul 17 2006, 11:07 AM
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#1
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 Special Cookie  Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228  |
I've been looking for some site that could do this work but I not being lucky finding one...
What I would like to know, and maybe someone with more knowledge and ability for the stars stuff could answer me this: Was there a moment in time where Ophiuchus was in the sky's azimuth and, at the same time, having the Piscis Austrinus and Aquarius constellation on the Eastern horizon? Thank you in advance. Or...Secondary question...If there is a time in the year where were closer to this scenario when would it be? (All this for the Northern hemisphere, south of Portugal) -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Jul 17 2006, 02:48 PM
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#2
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 Member Group: Members Posts: 114 Joined: 6-November 05 From: So. Maryland, USA Member No.: 544 |
Yes, although Ophiuchus would be moving over to the west a bit when Fomalhaut (alpha Piscis Austrini) is rising at about 12:30 this time of year.
The constellations would be in about the same position at 8:30 in mid-September. Michael QUOTE (ustrax @ Jul 17 2006, 07:07 AM)  I've been looking for some site that could do this work but I not being lucky finding one...
What I would like to know, and maybe someone with more knowledge and ability for the stars stuff could answer me this: Was there a moment in time where Ophiuchus was in the sky's azimuth and, at the same time, having the Piscis Austrinus and Aquarius constellation on the Eastern horizon? Thank you in advance. Or...Secondary question...If there is a time in the year where were closer to this scenario when would it be? (All this for the Northern hemisphere, south of Portugal) |
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Jul 17 2006, 03:37 PM
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#3
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Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
QUOTE (Michael Capobianco @ Jul 17 2006, 03:48 PM) The constellations would be in about the same position at 8:30 in mid-September. Michael Thank you very much Michael!  Would that have something to do with the autumnal equinox or are we speaking of completely different things? -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Jul 17 2006, 03:51 PM
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#4
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Member Group: Members Posts: 114 Joined: 6-November 05 From: So. Maryland, USA Member No.: 544 |
There's no connection that I'm aware of.
Michael QUOTE (ustrax @ Jul 17 2006, 11:37 AM) Thank you very much Michael!
Would that have something to do with the autumnal equinox or are we speaking of completely different things? |
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Jul 17 2006, 04:03 PM
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#5
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Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
QUOTE (Michael Capobianco @ Jul 17 2006, 04:51 PM) There's no connection that I'm aware of. Michael But the constellations are in that position in mid-September year after year or it only happens this year? If it is annual, in spite of having no connection with the equinox, can it be seen as a prelude of it? -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Jul 17 2006, 04:30 PM
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#6
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Member Group: Members Posts: 114 Joined: 6-November 05 From: So. Maryland, USA Member No.: 544 |
Except for precession, which slowly changes the position of the constellations over hundreds of years, this is indeed the position of the constellations every year. I guess the rising of Fomalhaut just after sunset could be viewed as a prelude to the coming equinox.
Michael QUOTE (ustrax @ Jul 17 2006, 12:03 PM) But the constellations are in that position in mid-September year after year or it only happens this year?
If it is annual, in spite of having no connection with the equinox, can it be seen as a prelude of it? |
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Jul 17 2006, 04:42 PM
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#7
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Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
QUOTE (Michael Capobianco @ Jul 17 2006, 05:30 PM) Except for precession, which slowly changes the position of the constellations over hundreds of years, this is indeed the position of the constellations every year. I guess the rising of Fomalhaut just after sunset could be viewed as a prelude to the coming equinox. Michael I like that!  And when Fomalhaut rises is Ophiuchus in the zenith or disappearing through the western horizon? ...Sorry for all the questions Michael...  Do you know of a place where I can find a star map with that precise situation? -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Jul 17 2006, 04:49 PM
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#8
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Member Group: Members Posts: 114 Joined: 6-November 05 From: So. Maryland, USA Member No.: 544 |
It's west of the zenith but still overhead.
Go to http://skyandtelescope.com/observing/almanac/ and there's a link to an interactive sky chart towards the bottom of the page. (requires Java) QUOTE (ustrax @ Jul 17 2006, 12:42 PM) I like that!
And when Fomalhaut rises is Ophiuchus in the zenith or disappearing through the western horizon? ...Sorry for all the questions Michael... Do you know of a place where I can find a star map with that precise situation? |
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ustrax Astronomy question Jul 17 2006, 11:07 AM
ustrax QUOTE (Michael Capobianco @ Jul 17 2006, 05... Jul 17 2006, 05:18 PM ustrax Does this have any reliable basis or it is just th... Jul 18 2006, 11:52 AM jamescanvin Now try again with another set of stars - see if t... Jul 18 2006, 12:54 PM ustrax QUOTE (jamescanvin @ Jul 18 2006, 01:54 P... Jul 18 2006, 01:01 PM Michael Capobianco There are some pretty obvious patterns in the sky ... Jul 18 2006, 03:04 PM ustrax QUOTE (Michael Capobianco @ Jul 18 2006, 04... Jul 18 2006, 03:25 PM Michael Capobianco Actually, I don't see any recognizable pattern... Jul 18 2006, 03:40 PM ustrax QUOTE (Michael Capobianco @ Jul 18 2006, 04... Jul 18 2006, 03:58 PM Michael Capobianco Another very distinctive pattern is Delphinus the ... Jul 18 2006, 04:33 PM ustrax QUOTE (Michael Capobianco @ Jul 18 2006, 05... Jul 18 2006, 04:45 PM |
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