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Jason H. wrote:
[...] _______________________ O.T.- Yay, I'm finally getting the rest of my network up tonight, including this machine with thousands of SETI@home Spring '03 re-observation WU coordinates sent to me by some of you here; this machine has been off-line since August when I had a big move to the [...] The results for the reobservation units is mentioned in this interview with David Anderson: http://seti.astroseti.org/setiathome/davideng.php 1 .- Recently there was a "reobservation campaign" of the most interesting signals at Arecibo. Have we found something interesting in the candidate signals ? Not so far. We recorded data at both 2 bits/sample and 8 bits/sample, and recently finished analizing the 2-bit data. We found no signals matching the original "candidate". The 8-bit data gives about 50% better sensitivity; we will analize it using BOINC. Also, the reobservation was based on the first 50% of Seti@home data- We still have to finish back end analysis of the second half, and then we'll do another reobservation run. And, are you still interested in a few more reobs RAs? (Or have you more than enough already??) I got a few more from those that were later reprocessed further. Regards, Martin -- ---------- Give a man a fish and you have fed him for today. - Martin - Teach him how to fish and he won't bother you for weeks! - 53N 1W - - Anon ---------- |
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Jason H. wrote:
[...] _______________________ O.T.- Yay, I'm finally getting the rest of my network up tonight, including this machine with thousands of SETI@home Spring '03 re-observation WU coordinates sent to me by some of you here; this machine has been off-line since August when I had a big move to the [...] The results for the reobservation units is mentioned in this interview with David Anderson: http://seti.astroseti.org/setiathome/davideng.php 1 .- Recently there was a "reobservation campaign" of the most interesting signals at Arecibo. Have we found something interesting in the candidate signals ? Not so far. We recorded data at both 2 bits/sample and 8 bits/sample, and recently finished analizing the 2-bit data. We found no signals matching the original "candidate". The 8-bit data gives about 50% better sensitivity; we will analize it using BOINC. Also, the reobservation was based on the first 50% of Seti@home data- We still have to finish back end analysis of the second half, and then we'll do another reobservation run. And, are you still interested in a few more reobs RAs? (Or have you more than enough already??) I got a few more from those that were later reprocessed further. Regards, Martin -- ---------- Give a man a fish and you have fed him for today. - Martin - Teach him how to fish and he won't bother you for weeks! - 53N 1W - - Anon ---------- |
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Martin wrote in message ...
Jason H. wrote: [...] _______________________ O.T.- Yay, I'm finally getting the rest of my network up tonight, including this machine with thousands of SETI@home Spring '03 re-observation WU coordinates sent to me by some of you here; this machine has been off-line since August when I had a big move to the [...] The results for the reobservation units is mentioned in this interview with David Anderson: http://seti.astroseti.org/setiathome/davideng.php 1 .- Recently there was a "reobservation campaign" of the most interesting signals at Arecibo. Have we found something interesting in the candidate signals ? Not so far. We recorded data at both 2 bits/sample and 8 bits/sample, and recently finished analizing the 2-bit data. We found no signals matching the original "candidate". The 8-bit data gives about 50% better sensitivity; we will analize it using BOINC. Also, the reobservation was based on the first 50% of Seti@home data- We still have to finish back end analysis of the second half, and then we'll do another reobservation run. And, are you still interested in a few more reobs RAs? (Or have you more than enough already??) I got a few more from those that were later reprocessed further. Regards, Martin Hi Martin, If you could hold onto those WU's indefinitely that would be great. After reading the above and also I believe that the people who sent me the WU's were able to automate the process of matching the RA/DECS to catalogued objects (and I believe they were able to make some interesting correlations, I hope they post something here about it here, anyway...), my manual searching seems inadequate (to say the least.) Here are links to two tables I threw together which are made of most of the WU info sent to me (warning, one file is over 2 megs and the other over 1 meg in size and they were created/sorted in MS WORD): http://www.geocities.com/exosearch/w...izedrasort.doc http://www.geocities.com/exosearch/w...nd11rasort.doc (the second table above I've just now thrown together and the RA/DEC's of the last few WU's have to be corrected, but the wife's in bed and asking me to wind it up.) As you can see, there's alot there (and that's not all of it either, my e-mail account overflowed from the Spam attacks last Sept. and I haven't cleaned them out until today, and I am certain that I lost WU's that were sent to me after Sept., they were bounced back to the senders (they know who they are ;^) Also, I put a fix in on that Spam-bucket account that hopefully will permanently prevent overflows.) Also, In the first listed table I cleaned out alot of the catalog object names I originally listed (and it was quite a few) because it became obvious that so many uncatalogued objects are in each field of view (for example, look at a candidate position with Starry Night Pro, and you may not find anything (even though it has millions of catalogued objects in its database), but when you look at a piece of sky that is empty on Starry Night and then look at the same piece of sky with NASA's Skyview, you find jillions of uncatalogued stars, it becomes an exercise in futility, so I started just looking for large-scale 'famous' objects, and so far I've only seen one definite extra-solar planet, M-1 (the Crab Nebula) and M-33 (the Triangulum Galaxy). Since I've only just started looking again (after a hiatus since last Summer), and I'm painfully slowly looking at what was sent (and I know that many may think I'm wasting my time, but I'm just curious after so many years to know what they were looking at), so I'm posting the lists here in case somebody here is curious about them (and if I lose the data, at least I'll know that somebody else had a chance to look at it.) Regards, Jason H. |
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Martin wrote in message ...
Jason H. wrote: [...] _______________________ O.T.- Yay, I'm finally getting the rest of my network up tonight, including this machine with thousands of SETI@home Spring '03 re-observation WU coordinates sent to me by some of you here; this machine has been off-line since August when I had a big move to the [...] The results for the reobservation units is mentioned in this interview with David Anderson: http://seti.astroseti.org/setiathome/davideng.php 1 .- Recently there was a "reobservation campaign" of the most interesting signals at Arecibo. Have we found something interesting in the candidate signals ? Not so far. We recorded data at both 2 bits/sample and 8 bits/sample, and recently finished analizing the 2-bit data. We found no signals matching the original "candidate". The 8-bit data gives about 50% better sensitivity; we will analize it using BOINC. Also, the reobservation was based on the first 50% of Seti@home data- We still have to finish back end analysis of the second half, and then we'll do another reobservation run. And, are you still interested in a few more reobs RAs? (Or have you more than enough already??) I got a few more from those that were later reprocessed further. Regards, Martin Hi Martin, If you could hold onto those WU's indefinitely that would be great. After reading the above and also I believe that the people who sent me the WU's were able to automate the process of matching the RA/DECS to catalogued objects (and I believe they were able to make some interesting correlations, I hope they post something here about it here, anyway...), my manual searching seems inadequate (to say the least.) Here are links to two tables I threw together which are made of most of the WU info sent to me (warning, one file is over 2 megs and the other over 1 meg in size and they were created/sorted in MS WORD): http://www.geocities.com/exosearch/w...izedrasort.doc http://www.geocities.com/exosearch/w...nd11rasort.doc (the second table above I've just now thrown together and the RA/DEC's of the last few WU's have to be corrected, but the wife's in bed and asking me to wind it up.) As you can see, there's alot there (and that's not all of it either, my e-mail account overflowed from the Spam attacks last Sept. and I haven't cleaned them out until today, and I am certain that I lost WU's that were sent to me after Sept., they were bounced back to the senders (they know who they are ;^) Also, I put a fix in on that Spam-bucket account that hopefully will permanently prevent overflows.) Also, In the first listed table I cleaned out alot of the catalog object names I originally listed (and it was quite a few) because it became obvious that so many uncatalogued objects are in each field of view (for example, look at a candidate position with Starry Night Pro, and you may not find anything (even though it has millions of catalogued objects in its database), but when you look at a piece of sky that is empty on Starry Night and then look at the same piece of sky with NASA's Skyview, you find jillions of uncatalogued stars, it becomes an exercise in futility, so I started just looking for large-scale 'famous' objects, and so far I've only seen one definite extra-solar planet, M-1 (the Crab Nebula) and M-33 (the Triangulum Galaxy). Since I've only just started looking again (after a hiatus since last Summer), and I'm painfully slowly looking at what was sent (and I know that many may think I'm wasting my time, but I'm just curious after so many years to know what they were looking at), so I'm posting the lists here in case somebody here is curious about them (and if I lose the data, at least I'll know that somebody else had a chance to look at it.) Regards, Jason H. |
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Aside:
Latest s@h reob-WUs notes: http://setiathome.ssl.berkeley.edu/reobs_summary.html Jason H. wrote: [...] Hi Martin, If you could hold onto those WU's indefinitely that would be great. The WU details are logged by SetiQueue and by SetiSpy. I'll be keeping the logs in anycase, and I can easily recreate a ".csv" of whatever WUs whenever. After reading the above and also I believe that the people who sent me the WU's were able to automate the process of matching the RA/DECS to catalogued objects... Automating the RA/DECS should be easy enough with a bit of scripting or programming. This is a much better idea to compare and pre-filter the numbers so as to let you have more time to concentrate on the intelligent comparisons rather than going blind over thousands of raw numbers. There must be programming types in your astro club? (and I believe they were able to make some interesting correlations, I hope they post something here about it here, anyway...), ... Should make for an interesting thread... http://www.geocities.com/exosearch/w...izedrasort.doc http://www.geocities.com/exosearch/w...nd11rasort.doc http://www.geocities.com/ seems to be dead for me at the moment. (Other sites resolve and load ok.) I'll try again later. (the second table above I've just now thrown together and the RA/DEC's of the last few WU's have to be corrected, but the wife's in bed and asking me to wind it up.) I can sympathise on both sides (;-)) ... I'm just curious after so many years to know what they were looking at), so I'm posting the lists here in case somebody here is curious about them (and if I lose the data, at least I'll know that somebody else had a chance to look at it.) Good idea. Hopefully, someone will have the programming and time to work through the details for some interesting snippets... Equally curious, Martin -- ---------- Give a man a fish and you have fed him for today. - Martin - Teach him how to fish and he won't bother you for weeks! - 53N 1W - - Anon ---------- |
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Aside:
Latest s@h reob-WUs notes: http://setiathome.ssl.berkeley.edu/reobs_summary.html Jason H. wrote: [...] Hi Martin, If you could hold onto those WU's indefinitely that would be great. The WU details are logged by SetiQueue and by SetiSpy. I'll be keeping the logs in anycase, and I can easily recreate a ".csv" of whatever WUs whenever. After reading the above and also I believe that the people who sent me the WU's were able to automate the process of matching the RA/DECS to catalogued objects... Automating the RA/DECS should be easy enough with a bit of scripting or programming. This is a much better idea to compare and pre-filter the numbers so as to let you have more time to concentrate on the intelligent comparisons rather than going blind over thousands of raw numbers. There must be programming types in your astro club? (and I believe they were able to make some interesting correlations, I hope they post something here about it here, anyway...), ... Should make for an interesting thread... http://www.geocities.com/exosearch/w...izedrasort.doc http://www.geocities.com/exosearch/w...nd11rasort.doc http://www.geocities.com/ seems to be dead for me at the moment. (Other sites resolve and load ok.) I'll try again later. (the second table above I've just now thrown together and the RA/DEC's of the last few WU's have to be corrected, but the wife's in bed and asking me to wind it up.) I can sympathise on both sides (;-)) ... I'm just curious after so many years to know what they were looking at), so I'm posting the lists here in case somebody here is curious about them (and if I lose the data, at least I'll know that somebody else had a chance to look at it.) Good idea. Hopefully, someone will have the programming and time to work through the details for some interesting snippets... Equally curious, Martin -- ---------- Give a man a fish and you have fed him for today. - Martin - Teach him how to fish and he won't bother you for weeks! - 53N 1W - - Anon ---------- |
#8
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(Jason H.) wrote in message . com...
....snip... Here are links to two tables I threw together which are made of most of the WU info sent to me (warning, one file is over 2 megs and the other over 1 meg in size and they were created/sorted in MS WORD): http://www.geocities.com/exosearch/w...izedrasort.doc http://www.geocities.com/exosearch/w...nd11rasort.doc Do not click on the links but cut and paste them to your browser, I just found out that y*hoo considers it a TOS violation for posting a link from a NG (but how do they know I posted it? anyway...) I just tried to click to it from the google's NG reader, and I guess the y*hoo server figured that out, but when I cut and pasted the URL to the browser it worked. If anybody still has problems seeing the files, let me know here and I'll upload it to my rented server. Regards, Jason H. |
#9
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(Jason H.) wrote in message . com...
....snip... Here are links to two tables I threw together which are made of most of the WU info sent to me (warning, one file is over 2 megs and the other over 1 meg in size and they were created/sorted in MS WORD): http://www.geocities.com/exosearch/w...izedrasort.doc http://www.geocities.com/exosearch/w...nd11rasort.doc Do not click on the links but cut and paste them to your browser, I just found out that y*hoo considers it a TOS violation for posting a link from a NG (but how do they know I posted it? anyway...) I just tried to click to it from the google's NG reader, and I guess the y*hoo server figured that out, but when I cut and pasted the URL to the browser it worked. If anybody still has problems seeing the files, let me know here and I'll upload it to my rented server. Regards, Jason H. |
#10
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Martin wrote in message ...
Aside: Latest s@h reob-WUs notes: http://setiathome.ssl.berkeley.edu/reobs_summary.html ....snip... I noticed in that article, re the 'Current Status of the March 2003 SETI@home Candidate Reobservations', at the above link says '...So now the procedure is this: For each of these points in the sky we scan these verified results to see if we found similar signals during these observations (or in the case of the non-SETI@home candidates, seeing if we found any signals at all).' This seems like a rather strict filtering rule for the SETI@home candidates. What exactly are they saying here? Are they saying that only signals with similar characteristics are worthy? The un-said thing here seems to be that they indeed have signals at this locations, but they are dis-similar to the originals. How are they dis-similar, by power, doppler shift, periodicity? Is it that the RFI situation is such a horrible mess of data overload that radio SETI is hopeless? What are the rejection criteria? Are they throwing the baby out with the bath water? Could this be a critical flaw in this experiment? (and that's easy for me to say on this end, totally removed from the daunting task.) I can't help but get the irksome feeling that ET's signal is already in the can, but the editors are so overwhelmed with data/noise and building BOINC that they might miss it. But what the hell, they've done a great job so far, and what other choice do we have? I hope that before they die or our civilization collapses, that they let qualified others (obviously not me) take a peek at the best candidate data. '...At the time of writing we are waiting for these database queries to finish. Once complete, we are going to rescore the candidates. For most of these candidates, the lack of matching signals during reobservations will cause their score to go down... It would be interesting to know (and have it deciphered/translated to me :^) what the form of the 'database queries' was (i.e. what questions were asked of the data.) Did they ask all the possible questions? (unlikely) Are there other ways of mining the data that could ferret out something interesting? (maybe) Also, does this mean that most of the best candidate signals are doomed to dissappear into mediocrity with the thousands of other interesting 'candidate' signals, never to be followed-up on? Can't they post the locations for others to take a gander at the best of the best? (what's the risk of posting them?) Also, there are many possible reasons for signal intermittency, which we've discussed before; why does the candidate location have to be lit up EVERY SINGLE TIME we look at it? And aside from the physical reasons why there might be a pause in transmission (like planet or star obscuration, dust disk obscuration etc.) we (alledgedly intelligent) humans pause for breaks in every medium of communication, and if a civilization were trying to communicate with the entire galaxy, could it sustain the un-imaginable power requirements of an 'always-on' transmission to billions of stars without toasting the neighborhood and bankrupting the transmitters? Certainly there could be a periodicity that isn't on the order of seconds (or fractions of seconds.) '...However, a few scores should go up. This does not mean we found E.T.! Random noise will ring the bell a few times, as will radio frequency interference coming from our own planet. We will present these new scores once we have them, and then inspect the candidates with increased scores with much more scrutiny, trying our best to find reasons why they are not interesting. If any continue to raise eyebrows, we will publish all our data and ask other SETI projects to see if they find anything there as well..." Too bad there is a conditional 'if' for publishing all their data? That would be a very interesting read even without raised eyebrows. But thanks again to Berkeley, aside from all the Earth-side benefits (the revolution in distributed computing, proving that quasi-free cooperative computation is possible for so many fields of Science) and the possible Astronomical discoveries to come (pulsars, black hole evaporation, hydrogen maps etc.) we may just be moments away from knowing the answer to the greatest question of all time. Regards, Jason H. |
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