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NEBULOSA DEL CANGREJO (720 x 539 - 107 Ko)

©Peña Felipe [info]

Photo taken on Friday 07 December 2007 in Mosqueruela- Teruel
[CCD Camera]
ATIK ATIK-16
Exposure : 40 min. x 3.
[Prime Focus]
CELESTRON 150/750
seen 1119 times
Author 's note :
Filtros nebulares: H-alfa, S-II, O-III, 10 tomas de 4 minutos en cada filtro.

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Adjust the brightness and contrast of your monitor so that you can see each step separately.
Pay more attention to the black steps here. The darkest step should be as dark as you can
make it while still being able to distinguish it from the next lighter step.

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