Starry Vistas by Don J. McCrady
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The Crescent Nebula

NGC 6888

The crescent nebula in Cygnus is a popular and easy target for amateur telescopes. A powerful, yet dying star called a Wolf-Rayet star is responsible for this formation of glowing dust and gas, and will end its life as a supernova.

 


Narrowband Wide-Field

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Takahashi Sky 90 at f/4.5
SBIG STL-4020M (remote guide head)
Takahashi EM-200
H-Alpha/OIII/SII: 18 x 20 minutes each channel
Processed with Maxim/DL, CCDStack, and Photoshop CS4
Noel Carboni's Astronomy Tools


HaRGB Crop

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Takahashi Sky 90 at f/4.5
SBIG STL-4020M (self-guided)
Takahashi EM-200
Hutech LPS Filter
Ha: 5:20 (20 minute subexposures)
Luminance: 1:30 (5 minute subexposures)
RGB: 30 minutes each channel (5 minute subexposures)
Processed in Maxim/DL, ImagesPlus, Registar, and Photoshop
Noel Carboni's Astronomy Tools Actions


H-Alpha Crop

Crescent Nebula H-alpha