On this page a 25°×35° wide-field view of Milky Way in the constellations Taurus, Auriga and Perseus is presented in different color composites. The region south of the galactic plane is full of Molecular clouds.
There are short descriptions below each image.
Full resolution (41 MB):
Half resolution (11 MB):
One third resolution (4.4 MB):
This visualization is a false color image where H-alpha (including red continuum) is mapped to red, blue continuum is mapped to green and red continuum (without H-alpha) is mapped to blue. Reflection nebulae appear green to blue. Emission nebulae appear red.
Stars are partially subtracted. Further image processing steps are dynamic range compression using a nonlinear hi-pass filter and tonal curve correction.
Full resolution (55 MB):
Half resolution (12 MB):
One third resolution (4.7 MB):
This visualization is a false color image which only uses the H-alpha data (including some red continuum). It shows much more details of the emission nebulae than the image above.
After partial star subtraction the dynamic range was compressed using a non-linear hi-pass filter. That leads to a compression ratio r which is used to calculate the color as depicted in the legend. (The legend shows the compression c:=1-r). The luminance is determined by the tonal curve corrected result of the dynamic range compression.
Half resolution (13 MB):
This image comes close to a true color view. Red component shows red continuum including some (but reduced) H-alpha, green continuum is mapped to green and blue continuum is mapped to blue.
Unlike to the other images the stars are not subtracted. This makes the dark nebulae visible which cover the light from the stars behind.
Due to limited resolution in continuum channels the image is only presented at half resolution.
All image processing steps are deterministic, i.e. there is no manual retouching or any kind of non-reproducible adjustment.
Image data are:
|Center position:||RA: 4h40, DEC: 33°|
|Orientation:||North right (exactly)|
|Scale:||10 arcsec/pixel (in center at maximum resolution)|
|FOV:||25°×35° (through center)|
|Exposure times:||H-alpha: 7.0d, continuum channels: 4.1d (sum of exposure times of all frames used to calculate the image)|
Image processing steps where: