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15 August 2024 at 4:34 pm
#624305
Dr Paul Leyland
Participant
Although UZ Boo is still well placed in the sky from La Palma the sky itself has been appalling and it was not worth opening the observatory between 08-09 and 08-13 inclusive. Thick Saharan dust and high winds which create turbulence and bad seeing. Even last night A 15-pixel (8.75″) radius aperture was needed to include the bloated stars and the moonlit dust made the sky background so high that a 10 minute exposure was used to get adequate SNR. Such a time would generally let me get useful results for a target fainter than V=15.
Anyway, UZ Boo was measured at V=12.35 on 2024-08-08 and 12.75 on 2024-08-14.