m74LRGB

L17*300s FWHM 2.55"/pix le 30/08/2019

R G B 8 * 300s en bin 2  le 25/10/2019

L 59*300s  FWHM env. 4.5"/pix le 25/10/2019

Les luminances d'octobre ne servent que pour le ratio S/B des bas niveaux.

Voir aussi le post montrant le ballet des astéroïdes autour de M74 .

  • Like 3

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