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#610473
Andy Wilson
Keymaster

Hi Daryl,
I had thoughts along similar lines.
I have already pointed out to them it appears you can zoom in on individual houses. They responded to say the postcodes cover many houses and they don’t think anyone looking at the map would assume everyone taking part has a telescope. None the less I wonder if it might discourage those with expensive equipment from contributing.
I have not seen evidence their conclusions are rigorous. I do think it is encouraging those recording severe light pollution has fallen, though my concern is whether this might be due to differences in participation. It would take quite a detailed analysis of their results, looking at individual locations. In particular comparing locations where results are reported from the same or nearby locations over several years.
Best wishes,
Andy