M 27 - Filter R

Seeing (arcsec)	Airmass 1.0	Airmass 1.5	Airmass 2.0
0.6	3*41s	3*41s	3*60s
1.0	3*41s	3*41s	3*60s
1.5	3*41s	3*41s	3*60s
2.0	3*41s	3*41s	3*60s