Observing data
Limit visual magnitude
Unaided eye (7,2mm +- 0,1 in 2005 january) :
| Location | Date | Time | Star | mV | Ciel Extrême Scale |
| Breil 1100m | 2006 july 27 | TYC3906-01596-1 | 8,49 | VI 5d | |
| Breil 1100m | 2006 july 27 | TYC3889-01664-1 | 8,29 | VI 3 | |
| Breil 1100m | 2006 july 27 | TYC3522-00315-1 | 8,27 | VI 5dd | |
| Breil 1100m | 2006 july 27 | TYC3519-00950-1 | 8,17 | VI 5 | |
| Breil 1000m | 2005 may 08 | TYC3834-00960-1 | 8,08 | ||
| Breil 1100m | 2006 july 27 | TYC3521-00973-1 + TYC3521-01396-1 | 8,07 + 8,42 | VI 2 | |
| Breil | 2005 march 31 | TYC3463-00035-1 + TYC3463-01128-1 | 7,96 + 8,36 | ||
| Breil 1000m | 2005 may 08 | TYC3836-00166-1 + TYC3836-00165-1 | 7,77 + 8,2 | ||
| Breil | 2005 april 03 | TYC3417-00081-1 | 7,69 | ||
| Breil | 2005 jan 19 + 2005 march 31 | TYC3466-00950-1 | 7,67 | ||
| Breil | 2008 feb 05 | HD118954 | 7.66 | ||
| Breil 1100m | 2006 july 27 | TYC3889-00835-1 | 7,6 | VI 3 | |
| Breil | 2005 may 06 | TYC3889-00835-1 | 7,6 | ||
| Breil | 2006 july 26 | TYC2647-00981-1 | 7,53 | ||
| Breil 1000m | 2005 may 08 | TYC3834-00333-1 | 7,51 | ||
| Breil | 2005 jan 19 | HD119170 CVn | 7,5 |
Binocular 50mm G=10x
| Location | Date | Time | Star | mV |
| Breil | 2005 jan 20 | 8' WSW M104 TYC5531-01353-1 | 11,5 - 10,4 | |
| Breil | 2005 jan 20 | TYC3463-00058-1 CVn | 11,2 | |
| Breil | 2005 feb 09 | TYC4135-00892-1 | 11,15 | |
| Breil | 2005 feb 09 | TYC4136-00425-1 | 11,08 | |
| Breil | 2005 jan 20 | BD+47 2064 CVn | 10,9 | |
| Breil (?) | 1997 (?) | 15 Polaris field | 10,9 |
Refractor 80mm f=600mm
| Location | Date | Time | G | Star (GSC 2.3 catalog) | GSC 2.3 mG | Others sources |
| Breil | 2008 nov 26 | 85 | NCIA000625 near NGC891 | 13.85 | ||
| Breil | 2008 nov 26 | 85 | NCIA000613 near NGC891 | 13.8 | ||
| Breil | 2009 jan 21 | 100 | near M1 | 13.8 | ||
| Breil | 2009 jan 21 | 100 | near M1 | 13.7 | ||
| Breil | 2009 jan 21 | 100 | near NGC2903 | 13.7 | ||
| Breil | 2009 jan 21 | 100 | near NGC2419 | 13.7 | ||
| Breil | 2008 nov 26 | 85 | NCIA000604 near NGC891 | 13.5 | ||
| Breil | 2008 nov 25 | 100 | NCIA000653 near NGC891 | 13.5 |
Reflector 114mm f=900mm
| Location | Date | Time | G | Star (USNO-A2 catalog) | GSC 2.3 mG | Others sources |
| Breil | 5 mai 2005 | 100 | 1200.10007530 near M57 | 14.4 | 14,6 14,7 | |
| Breil | 3 avril 2005 | 100 | 1275.07849084 near Mrk421 | 14.4 | ||
| Breil | 4 août 2005 | 100 | 1200.19355885 near NGC7331 | 14.0 | ||
| Breil | 4 août 2005 | 100 | 1200.19335012 near NGC7320 | 13.9 | ||
| Breil | 4 août 2005 | 100 | 1200.19355559 near NGC7331 | 13.9 | ||
| Breil | 5 mai 2005 | 100 | 1200.10014098 near M57 | 13.8 | 14,1 14,2 | |
| Breil | 4 août 2005 | 100 | 1200.19331763 near NGC7320 | 13.6 | ||
| Breil | 4 août 2005 | 100 | 1200.19359827 near NGC7331 | |||
| Breil | 4 août 2005 | 100 | 1200.19352753 near NGC7331 | |||
| Breil | 4 août 2005 | 100 | 1200.19356667 near NGC7331 | 13.7 | ||
| Breil | 4 août 2005 | 100 | 1200.19348216 near NGC7331 | |||
| Breil | 4 août 2005 | 100 | 1200.19333465 near NGC7320 | |||
| Breil | 4 août 2005 | 100 | 1200.19333886 near NGC7320 | |||
| Breil | 4 août 2005 | 100 | 1200.19348358 near NGC7331 | |||
| Breil | 4 août 2005 | 100 | 1200.19332343 near NGC7320 | 13.5 | ||
| Breil | 4 août 2005 | 100 | 1200.19338331 near NGC7320 | |||
| Breil | 4 août 2005 | 100 | 1200.19342899 near NGC7320 | |||
| Breil | 4 août 2005 | 100 | 1200.19355228 near NGC7331 | |||
| Breil | 4 août 2005 | 100 | 1200.19356401 near NGC7331 | 13.4 | ||
| Breil | 9 feb 2005 | 72 | 1725.00432596 near Polaris | |||
| Breil | 4 août 2005 | 100 | 1200.19355612 near NGC7331 | |||
| Breil | 4 août 2005 | 100 | 1200.19350818 near NGC7320 | |||
| Breil | 4 août 2005 | 100 | 1200.19349493 near NGC7320 | |||
| Breil | 5 mai 2005 | 100 | 1200.10003773 near M57 | 13.6 | 14,1 | |
| Breil | 4 août 2005 | 100 | 1200.19338310 near NGC7320 | |||
| Breil | 31 mar 2005 | 100 | 1050.06246953 near NGC3190 | |||
| Breil | 3 avril 2005 | 100 | 1575.03025703 near M82 | |||
| Breil | 4 août 2005 | 100 | 1200.19344236 near NGC7320 | |||
| Breil | 9 feb 2005 | 72 | 9s Polaris field | 13,7 | ||
| Breil | 9 feb 2005 | 72 | 8s Polaris field | 13,7 | ||
| Breil | 31 mar 2005 | 100 | 1050.06250650 near NGC3190 | |||
| Breil | 4 août 2005 | 100 | 1200.19337042 near NGC7320 | |||
| Breil | 5 mai 2005 | 100 | 1200.10009847 near M57 | |||
| Breil | 4 août 2005 | 100 | 1200.19353047 near NGC7331 | |||
| Breil | 4 août 2005 | 100 | 1200.19348634 near NGC7320 | |||
| Breil | 16 mar 2005 | 72 | 1350.08287943 3' E M51 | 13,7 | ||
| Breil | 31 jan 2005 | 72 | 0900.01947678 10' NW M78 | |||
| Breil | 31 mar 2005 | 100 | 1050.06250141 near NGC3190 | |||
| Breil | 31 mar 2005 | 100 | 1050.06250801 near NGC3190 | |||
| Breil | 9 feb 2005 | 72 | 0750.07910346 9' WNW M104 | 14 |
Reflector 150mm f=750mm
| Location | Date | Time | G | Star (USNO-A2 catalog) | GSC 2.3 mG | Others sources |
| Breil | 3 feb 2005 | 75 | 0900.01963629 8' NE M78 | 14.8 | ||
| Breil | 6 july 2005 | 115 | 1200.10007530 near M57 | 14.4 | 14,7 | |
| Breil | 9 feb 2005 | 75 | 27 Polaris field | 14,2 | ||
| Breil | 6 july 2005 | 115 | 1200.10014098 near M57 | 13.8 | 14,1 | |
| Breil | 6 july 2005 | 115 | 1200.10003773 near M57 | 13.6 | 14,1 |
Reflector 300mm f=1200mm
| Location | Date | Time | G | Star (GSC 2.3 catalog) | GSC 2.3 mG | Others sources |
| Breil | 2008 july 07 | 240 | N2HR016012 near NGC6826 | 16.45 | ||
| Breil | 2008 july 07 | 240 | N2HR016109 near NGC6826 | 16.4 | ||
| Breil | 2008 july 07 | 240 | N2HR016848 near NGC6826 | 16.3 | ||
| Breil |
2008 nov
19 |
170 |
NBX8011005
near Abell 262 | 16.15 | ||
| Breil | 2008 july 07 | 240 | N2HR016001 near NGC6826 | 16.0 | ||
| Breil | 2008 june 02 | 300 | Central star of M57 | 14.5 | 14.7 15.2 15.3 |