RA 18

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Corona Austrina

2006-11-25 Ruled OUT -

After a few days of software debug and eating (Thanksgiving) I managed to invalidate the signal I found on 2006-11-19 (below).  The first thing I did was to my antenna back to the same Az/El that the signal was acquired at (Az 244.7 El 53.8) to see if I was looking at some sort of local signal. 

It is morning now and the initial acquisition of the carrier was in the evening.  Because of the time difference pointing to the same Az/El points to a much different DEC/RA and this should help isolate a local signal.  The line appeared (Damn).

Notes:

  1. I was able to rule out this signal as being ET by the following procedure.
  2. The original signal was found in the evening at RA 18 hours DEC 12.5 degrees as shown in the first Sky Map plot.  This corresponds to Az 244.95, El 52.73.
  3. This morning I moved to the same Az/El but since it is a different time of day the RA/DEC was much different - see the second Sky Map plot
  4. I collected data at the same frequency (1406.460 000 mHz) and did see the line
  5. Therefore the signal is not associated with a particular DEC/RA.

Second Sky Map Plot Thumbnail

Same carrier Thumbnail


Notes:

  1. During this observation the source was at the very top of travel of the antenna elevation and azimuth.  Since this is a triangle on the Sky Map search area I could not track the source for an extended period.  Click on the thumbnail below to see the Sky Map
  2. By the end of the collection period the source was still faintly visible and was still in the very last frame.  
  3. The full length WAV files (six in all, 45 megabytes each) are available, on request, from my local archives.

First Sky Map Plot

 

Start of the set visible line

From second WAV

Third WAV - I popped the Spectrum Size up for better definition

Fifth WAV file - line almost gone

You can still see the source as a very weak line in this  Final frame .  After that the source moved out of sight of the antenna.

To see the line you must open the thumbnail (left click on it) and then download the JPG (right click | Save Picture As) then drag and drop the file onto the SETI Net File Manager.  You can just see the source as a thin blue line.

Sixth WAV file, final frame.


Line

  1. Shows a Line 
  2. This is 45 meg WAV of the line: 
  3. RA 18.99 DEC 15.75  Freq: 1406.465 100 mHz
  4. Use the SETI Net File Manager to recover the engineering data from the JPGs or the WAV file.
  5. The signal was at the extreme corner of my search area but I did get a full set of JPG frames to go along with the WAV file.

      


2006-11-12

Nothing appears in this set of JPGs but check out the Line above.

 

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