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: http://www.sai.msu.su/mirrors/isn/snimages/sn1999/sn99gs1.html
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Supernova 1999gs in NGC 4725
This is a prediscovery image of
1999gs in
NGC 4725 taken by
Marco Migliardi on December 23.21 1999, during the
CROSS Program
with the Col DrusciХ 20" "Helmut Ullrich" telescope.
This image was taken 5 days before the "discovery" image of
1999gs which was
taken by
LOSS this image shows a significantly
brighter SN than the discovery image shows.
It should be noted that this supernova was most likely very old
(by several months) when discovered.