Juno development, launch, and cruise, Including Earth flyby imaging Oct 9 2013 |
Juno development, launch, and cruise, Including Earth flyby imaging Oct 9 2013 |
Apr 3 2006, 09:57 PM
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Member Group: Members Posts: 170 Joined: 17-March 06 Member No.: 709 |
I thought that it was time to start a new thread devoted to the JUNO Jupiter
Orbiter mission. This New Frontiers Mission #2 seems to be a "stealth" project with little information available on the Web. In fact, the official NASA JUNO web site is quite pitiful. It contains the minimal amount of information on what seems to be an intriguing mission, in terms of both science and engineering. Does the UMSF community have information on this mission that has not been widely seen before? Another Phil |
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Nov 21 2013, 12:41 PM
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
An excerpt (efb15) of some intermediate data reduction step:
The first image is the raw efb15 image cleaned (to some degree) and enhanced 16x, but not adjusted geometrically. The second and third image are data reduced versions (operating on cleaned, but not on enhanced version). Each "bright" spot is represented by a symbol consisting of a cross for the position and a square for the integrated brightness (edge length roughly proportional to the natural logarithm of the integrated brightness). Precise (not necessarily accurate) values are contained in the two textfiles efb15_ModVertHipass_NormalWaveletsCrude_rad4_forw.txt ( 16.1K ) Number of downloads: 255 and efb15_ModVertHipass_NormalWaveletsCrude_rad4_backw.txt ( 16.05K ) Number of downloads: 272 for spreadsheet import. Framelets are counted from the bottom of the image to the top. WeightAreaSum is the summed (integrated) brightness of the considered spot. BarycenterX and Y are weighted averages; origin is the lower left corner; so you may need to add a column 10495-BarycenterY to find the symbol corresponding to the data record in the image. SigmaX and Y are root mean square sums of the weighted distances to the BarycenterX resp. Y. As weight of a pixel its grey value is used. Analysis of a spot is restricted to one framelet and to a square of 16x16 pixels. Sirius extends beyond the 16x16 limitations, and is split in each of the two framelets it occurs. The analysis method is biased by the order (left-right/up-down) of the analysis; therefore I've provided two runs with opposite bias. Assigning stars with known properties to several of the spots will be one of the next steps to pin down image geometry, and may be radiometry. |
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