Title: North America Nebula
1(No Transcript)
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- ???? ????"? 1,600 100 ly (675 30 pc)
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- ????? ????? 120 100 arcmins
- ???? 65 ly
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Mean Max Min Area Filter
31.052 255 0 2082076 SII
31.742 255 0 2082076 OIII
44.712 255 0 2082076 Ha
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0.31742 0.44712 0.709 SII Ha 0.31052
0.44712 0.694 SII OIII 0.31052 0.31742 0.978
??????? ?????? ???????? ??? Osterbrock  OIII
Ha 10 8.92 10 12 0.000831 SII Ha 10
7.5 10 12 0.0000316 SII OIII 10 7.5 10
8.92 0.0380
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