Thursday, 20 August 2020
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A HaOIII-RGB  image made with the 12,5inch F/9 Ritchey Chretien from RC Optical Systems.
Total integration time 830 minutes.
Sub exposure time 10 minutes for all the filters.

Ha: 120 minutes
OIII: 300 minutes
Red:120 minutes
Green: 120 minutes
Blue: 170 minutes.

Mike van den Berg NGC6888 RCOS.jpg
3 years ago
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Wow Mike!

Beautiful image :D

Phil McCauley
Roboscopes Website Admin


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