Telescope: Skywatcher 8" f/5 Newtonian
Focus: Prime focus
Camera: SAC7B, uncooled
Exposure: various, mosaic of 7
images, including one of the Trapezium region taken at a shorter exposure in
order to avoid burning out the image in this bright region. This part
of the image was then composited in using Photoshop.
Date: 1st Dec 2002
Processing: Acquired in Astrovideo as
FITS. Stacked and mosaicked in Iris. An LRGB image with
the red image image used as the luminance component. This luminance
image was histogram stretched logarithmically to enhance fainter details.
Colour saturation enhanced using the Multiple Luminance Layering technique.
In hindsight, the use of the red component
as luminosity only worked well because the mosaicking resulted in a high
resolution overall image. As discussed in the Image Processing
section, the red component is sub-sampled by the camera and is of inferior
resolution to the green component.