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ASTRO: IC 4182
Here's a rather minor galaxy that caused a big fuss about Hubble's
Constant. Seems thanks to a type 1A super nova in 1937 its distance could be calculated quite "accurately". Being the closest 1A SN it helped set the yardstick for Hubble's constant and thus the universe. But when it later became possible to measure the distance using Cepheid variables there was a problem. The SN said it was about 14 to 16 million light years away but the Cepheid said it was much closer, say 8 million light years. It appears the latter is the more reasonable distance but for a while things were really being argued hot and heavy. Since my image shows many star clusters in it I would think the 8 million light year distance far more reasonable. In any case it is a rather odd looking dwarf galaxy. 14" LX200R @ f/10, L=4x10', RGB=2x10' binned 3x3, STL-11000XM, Paramount ME Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh". |
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