Ring Nebula – M57

Ring-04-15-04-CCD

Click on image to see full size

Common Name: Ring Nebula
Formal Name: M57
Date: 4/15/04
Constellation: Lyra
Location: Ionia
Hardware: Nexstar 11GPS, SBig 2000XM Camera/Filter Wheel
Temperature: -25C
Bin Mode: 2×2
Images: (14) 70 second Blue exposures(8) 1 minute Green exposures(10) 2.5 minute Red exposures(11) 2 minute Luminous exposures(1) 15 minute Luminous exposure4 Flat fields (T shirt)
Processing: Reduced, Aligned, Averaged in CCDSoftAdjusted Levels, Curves in Photoshop

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