Successful detection of hydrogen line at 1420MHz using SDRplay RSPduo SDR on LRO-H2 radio telescope (150cm dish) (ezSky200RBVO_19AntBTVTMaxAndy) 14/11/2025-16/11/2025

I am very grateful to Ted Cline for both his software and help with processing of this image.

Andy

Comments from Ted on this image:

Hi Andy,

I attach your ezSky200 plot, from your SDRplay RSPduo.

But that plot is somewhat confused due to lots of RFI at your location.

The left Galactic plane crossing should be louder than the right crossing (but isn’t).

You used,

      python3  ../ezRA/ezColS251113b.py  -ezColReadBinQtyBits 12  -ezColFreqBinQtyBits 12  -ezColReadBinMin 0

                    -ezColBiasTeeOn 0 -ezColBandwidth 8 -ezColSampleRate 10 -ezColCenterFreqAnt 1418.405

                    -ezColYLimL .55 .75 -ezColIntegQty 31e4 -ezColGainL 20 0 0 -ezColGain -10

                    -ezRAObsName LRO-H2_RSPduo_BandW8M_SampleR10_

To analyze it, I used,

      py  ..\ezRA\ezCon251111a.py  -ezRAObsLat 52.7  -ezRAObsLon -1.8  -ezRAObsAmsl 81.0  -ezRAObsName LRO-H2

            -ezConInputdB 1

            data\LRO-H2_RSPduo_BandW8M_SampleR10_251114_21.txt

            data\LRO-H2_RSPduo_BandW8M_SampleR10_251115_00.txt

            data\LRO-H2_RSPduo_BandW8M_SampleR10_251116_00.txt

            -ezConAntXInput 4  -ezConAntFreqBinHide 256  -ezConAntFreqBinHide 257

            -ezConRefMode30L 1420.405 1418.405 2  -ezConAntFreqBinHideL 512 1022

            -ezConAntXTFreqBinsFracL .1 .35  -ezConAntXTFreqBinsFracL 0 1  -ezConPlotRangeL 0 400

      py  ..\ezRA\ezSky251010b.py  LRO-H2_RSPduo_BandW8M_SampleR10_251116_00.ezb  -ezSkyInput 19                                                                         

Hope this helps.

Ted Cline