Following a recent presentation to my astronomical society by Martin Lewis, I realised that I could improve my better images of the night side of Venus from September 2023.  I have now re-worked my best data.  This image compares Martin's image in the best seeing of that month with mine from the same morning's pre-dawn skies.  We were using different telescopes approximately 50 miles apart but the same camera model and filter to capture the narrow infrared band between 997 nm and 1027 nm. The known peak of night side heat transmission without signifcant interference from atmospheric heat is betwen 1000 nm and 1030 nm, where approximately 96% of the signal detected by professionals has been identified as coming from surface heat.     The Winjupos heat map should identify darker aareas as cooler higher parts of Venus.  Interestingly although both our mages have a close correlation, in sme areas they coincide with the heat map but in other areas they don't.  The fact that we both have overlapping features when the images are overlaid suggests that our images are real surface heat detections at that point in time. 

Peter