IC443 12/30/2011

Catching Light

Photography by

Dan Lessmann

Oklahoma City Clear Sky Clock

Cheddar Ranch Observatory Clear Sky Clock

Catching Light

Photography by

Dan Lessmann

Oklahoma City Clear Sky Clock

Cheddar Ranch Observatory Clear Sky Clock

IC443, The Jellyfish Nebula

Click image for larger version.

This is a supernova remnant in the constellation of Gemini. It gets its name for obvious reasons. The bright star to the right is Propus, one of the stars that make up Castor's feet.

Date: 12/30/2011

Location: 4Domes Observatory

Telescope: TMB130SS @ f/4.7

Mount: AP-1200

Camera: QSI-583WSG

Guiding: Maxim DL w/ Starlight Xpress Lodestar Off Axis

LRGB Combine Exposures:

Ha - 15 x 1200 seconds, Bin 1x1 (5 hours total and used for nebula's luminance)

Luminance - 10x600 Seconds, Bin 1x1 (1.6 hours total for star luminance)

Red - 5x300 Seconds, Bin 2x2

Green - 5x300 Seconds, Bin 2x2

Blue - 5x300 Seconds, Bin 2x2

Post Processing:

ImagesPlus: Calibration, align and combine, digital development

Photoshop CS4: Luminance, color combine, levels, curves, saturation

NeatImage: Noise reduction