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Ring Nebula
M57
Object
Type Planetary Nebula
Constellation Lyra
Distance 2,300 ly
Magnitude 8.8
Angular Size 1.4x1.0 arc min
Size
More Info  SEDSAPODEssay by Robert Gendler ©
Image
Date 10/4/2004
Place Carlsbad, CA
Exposure Data LRGB 85:15:15:25 mins @ -15C
Lum 17x5 (bin 1x1), R 3x5, G 3x5, B 5x5 (bin 2x2)
Notes
Equipment
Optics Celestron C11 Carbon Fiber SCT w/XLT
Focal Length 2800mm @f/10
Mount Celestron CGE
Camera SBIG ST-2000XM (KAI-2001M)
Focuser Optec TCF-S
Filters CFW8A, SBIG LRGB
Software CCDSoft 5, Photoshop cs

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