Higher-resolution
versions: 1280 x 1024 1680 x 1050 1920
x 1200 2004 x 1336 (luminance) 2004 x 1336 (negative)
More than 500
galaxies have been catalogued in the Perseus Galaxy Cluster, which is located about 250
million light-years from our own galaxy. Its brightest members are NGC 1275 (magnitude
11.6), near the right edge of the image, and NGC 1272 (magnitude 12.0), located to the
left of NGC 1275. NGC 1275 is a strong source of radio waves and x-rays. In the
higher-resolution images, red filaments can be seen extending from the center of the
galaxy.
Equipment: Meade
14" LX200R/STL-11000M/Astrodon LRGB filters/Paramount ME
F-ratio: f/9.5
Exposures: LRGB: L 18 x 30 minutes, binned 2x2: R 12 x 10 minutes: G
12 x 10 minutes: B 12 x 10 minutes: RGB binned 3x3
Date: November 2, 3, 9, and 10, 2007
Location: Landers, California, USA
Technical Notes: Individual exposures were obtained using CCDAutoPilot2 and then sigma combined. The RGB image was created in
Registar 1.0. Mild gradients were removed with Russell Croman's GradientXTerminator plug-in for Photoshop. A high-pass
filter with a radius of 4 pixels was applied to copy of the luminance image. A Gaussian
Blur of 1 pixel was applied to the RGB image and the dim portions of the luminance image.
A duplicate of the RGB image was combined using Soft Light to increase color saturation.