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IAAC Netastrocatalog: Observing Reports for M57
- (IAAC) OBS M57 (Ring Nebula) 12.5" f/4.8
- (IAAC) Obj: M57 - Inst: 5" f/10 SCT
- (IAAC) OBS M57 (Ring Nebula) 7x35 binos
- (IAAC) 25cm Dobsonian, f/6, 48x, M57
- (IAAC) Object: M57; Instrument: 16" Dob
- Re: (IAAC) Instrument: 90mm ETX Object: M57
- (IAAC) Instrument: 16" Dob Object: M57
- (IAAC) M57
- (IAAC) Obj: M57 (Ring Nebula) - Inst: 20" f/5 dobsonian
- (IAAC) Obj: M57 Ring Nebula - Inst: 6" Orion Dobsonian
- (IAAC) Obj: M57 Ring Nebula - Inst: Orion 6" Dob
- (IAAC) Obj: M57 (again) - Inst: 6" Orion Dobsonian
- (IAAC) Obj: NGC 6720 (M57) - Inst: 8" f/6 Newtonian alt-az. mount
- (IAAC) Obj: M57 (n6720) - Instrument: 4.5" Newtonian
- (IAAC) Obj: M57 Ring Nebula - Inst: Orion 6" Dob
- (IAAC) Obj: M57 - Inst: 70mm f/6.8 Refractor
- (IAAC) Obj: M57 the "Ring Nebula" - Inst: Orion 6" Dob
- (IAAC) Obj: M57 and NGC 6210 - Inst: 8" F/6 Dobsonian
- (IAAC) M57 - Inst: 8" LX-200
- (IAAC) Obj: M57 (Ring Nebula) [negative report] - Inst: Bushnell 8x21 binocs
- (IAAC) Obj: M57 outer halo (Ring Nebula) - Inst: 36" f/5 dob
- (IAAC) Obj: M57 - Inst: 6" newton,f/8 ,dobsonian mount
- (IAAC) Obj: M39, Epsilon Lyrae, Delta Lyrae, M57 (unsuccessful), the Coathanger, Deneb, NGC 7000 (North American Nebula) (unsuccessful) - Inst: 10x50 binoculars
- (IAAC) Obj: M57, Albireo - Inst: 20x60 Soviet binoculars
- (IAAC) M 57 (NGC 6720) - 4.25" F/7.8
- (IAAC) M 57 (NGC 6720) - 8" F/10
- (IAAC) M 57 (NGC 6720) - 2.4" F/15
- (IAAC) M 57 (NGC 6720) - 17.5" F/4.5
- (IAAC) Obj: Hickson50, Abell2065, NGC6227, NGC4676 (The Mice), M104, M57 and more - Inst: 82" Ritchey-Chretien,F13.1,Equatorial
- (IAAC) Obj: M57 (NGC 6720) - Inst: 8" f/6 Dobsonian
- (IAAC) OBJECT: M57 (planetary) INST: 90mm refractor fl=800mm
- (IAAC) Obj: M57 Ring Nebula - Inst: Celestar 8" SCT, fork mount
- (IAAC) Obj: M57 (The Ring Nebula) - Inst: XT-8 1200mm f/6 dob
- (IAAC) Obj: M57 - Ring nebula - Inst: ASM 200mm f/6 dob
- (IAAC) Obj: M57 - Inst: 12.5 " dob
- (IAAC) Obj: M57 Ring Nebula - Inst: 16" Dob F4.5
- (IAAC) Obj: M57 - Inst: 8in F/6 Dob
- (IAAC) Obj: M57 - Inst: 32" Dobsonian F5
- (IAAC) Obj: M57 - Inst: 3.5" (9cm) ecuatorial refractor
- (IAAC) Obj: M57 (Ring Nebula) - Inst: 4.5" (114 mm) Reflector Telescope with 900 mm Focal Length
- (IAAC) Obj: M57 - Inst: Orion 10" DSE F/5.6
- (IAAC) Obj: Ring nebula (M 57) - Inst: 120 mm KONUS refractor, f/8.33, eq. mount
- (IAAC) Obj: M57 (Ring Nebula) - Inst: 4.5" f/8 Dobsonian reflector
- (IAAC) Obj: Central star of M 57 - negative report - Inst: 24 cm dobsonian, f/6.6
- (IAAC) Obj: M57 - Inst: 9x63 binoculars
- (IAAC) Obj: M57 - Inst: 10" F/5,6 Dob
- (IAAC) Obj: M57 - Inst: Orion 120MM 4.7 Inches F/5 Richfield Refractor
- (IAAC) Obj: M 57 (Ring Nebula) - Inst: Bresser 4.8 inch refractor, EQ5
- (IAAC) Obj: M57 - Inst: 6 inch f/6.5 reflector
- (IAAC) Obj: M57 - Inst: XT8 Dobsonian F/6 1200MM 8 Inch
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Hartmut Frommert
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