Focal Pointe Observatory
Astrophotography by Bob Franke

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IC 443 The Jellyfish Nebula

 

Click the image for a full size 3.5 arcsec/pixel display (1800 x 1200)

Instrument

Takahashi FSQ-106ED @ f/5.0 (530 mm F.L.)  Captured at 3.5 arcsec/pixel.  Shown resampled to 8.4 arcsec/pixel.

Mount

Paramount ME

Camera

SBIG STL-11000 w/ internal filter wheel, AstroDon Filters

Acquisition Data

1/17/2009 to 2/20/2009 Chino Valley... with CCDAutoPilot3

Exposure

Ha        480 min.  (16 x 30 min. bin 1x1)

R,G & B  150 min.  (10 x 5 min. bin 1x1, Each)

Ha, Green & Blue are mapped to RGB respectively. 

Click here for the narrow band color mapped image.
Click here for the B & W  Ha filtered image.

Software

CCDSoft, CCDStack, Photoshop CS w/ the Fits Liberator plugin, Noel Carboni's actions and Russell Croman's GradientXTerminator

CCDStack to calibrate, register, normalize, data reject & combine.

PhotoShop for color combine & non-linear stretching.

Comment

North is to the top.

The Jellyfish Nebula is a Galactic supernova remnant, in the constellation Gemini, that occurred 8,000 years ago. It is one of the best studied cases of supernova remnants, interacting with surrounding molecular clouds. IC 443 spans about 65 light-years at an estimated distance of 4900 light-years.