Galactic cirrus along our line of sight to NGC 891 as imaged by the half meter Black Bird II Observatory telescope. The central portion of the picture is a positive image of the galaxy; in the outer regions of the picture, a stretched, inverted luminance image is shown. In this way, the faint galactic cirrus is more readily apparent.

This image was produced with a RCOS half meter telescope, Apogee Alta U16M camera and Astrodon E-Series filters
Exposure times: 1,710 minutes Luminance, 120 minutes Red, 120 minutes Green, 120 minutes Blue (All 1X1)



NGC 891 and Milky Way Galactic Cirrus


Click here for a closer view
Click here for a larger wide view

Also read Dusty Veils of the Milky Way for a description

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NGC 891 lies about 30 million light years behind a much closer thin veil of galactic cirrus located near our Milky Way galaxy. Because this star system is viewed through thin dust clouds, its hues are normally shifted to the red end of the spectrum. But, the color has been corrected in the full color image that can be seen when you mouse over the large grayscale image.

Typically, galactic cirrus in this field of view would be impossible to see without super stretching the image and over-exposing everything else, similar to the view of the grayscale picture. But, special processing allows both bright and dim objects to display a similar tonal range. Thus, it becomes possible to simultaneously view structures that differ in brightness by several magnitudes.


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