Abstract
A SERIES of observations of Mars were obtained here in March and April last with a zo-inch silver-on-glass reflector by With of Hereford. The powers employed were 252 and 475, but I found no advantage from the latter, which seemed too high for the purpose. As a rule a single lens magnifying 252 was amply sufficient, though there were several occasions when a power of about 350 would have been a decided acquisition.
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DENNING, W. The Physical Appearance of Mars in 1886. Nature 34, 104–105 (1886). https://doi.org/10.1038/034104a0
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DOI: https://doi.org/10.1038/034104a0