The difference between IMAGE documented CF of 2272.5Mhz can be attributed to expected Doppler. Center frequency (CF) was between 2272.4.418. They acquired the signal while the target was on ascent at about 2RE. UPDATE: Janu– NASA Confirms IMAGE is indeed alive!Įngineers at GSFC have acquired the suspect S-band source using the 4m CTA (Compatibility Test Antenna) here at GSFC (.jpg attached and no I’m not in the picture). See new blog posts for any updates on the IMAGE story.ĭiscovery plot above obtained of IMAGE and the first fit attempt that lead to revealing it’s identity. UPDATE: Following official confirmation from NASA that the object discussed in this blog is actually IMAGE on January 30, 2018, the blog will no longer be updated. So I set to work to identify the source.Ī quick identity scan using ‘strf’ (sat tools rf) revealed the signal to come from 2000-017A, 26113, called IMAGE. Upon reviewing the data from January 20, 2018, I noticed a curve consistent with an satellite in High Earth Orbit (HEO) on 2275.905MHz, darn not ZUMA… This is not uncommon during these searches. This tends to be a semi-annual activity as it can eat up a lot of observing resources even with much of the data gathering automated the data reviewing is tedious. Over the past week the station has been dedicated to an S-band scan looking for new targets and refreshing the frequency list, triggered by the recent launch of the mysterious ZUMA mission.
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