On this page a 35°×25° wide-field view of the Milky Way in constellations Perseus, Camelopardalis and Cassiopeia is presented in different color composites.
This region is full of known and unknown nebulae.
Some (probably not all) of these unexplored nebulae have been collected in the list below. Click on the following links for a presentation.
False color images containing H-alpha and continuum:
H-alpha is mapped to red, blue continuum is mapped to green, and red continuum (without H-alpha) is mapped to blue.
Color of molecular clouds and reflection nebulae in the false color image is something between green (bluish in reality) and blue (reddish in reality).
HII regions (ionized hydrogen) appear red to orange, depending on the amount of OIII (doubly ionized oxygen) detected by the blue continuum filter.
A repository with the discoveries can also be found on GitHub
Images where captured with a camera array which is described on the instruments page.
Image data are:
RA: 3h28m, DEC: 57°
North is right
North is up
10 arcsec/pixel (in center at maximum resolution)
35°×25° (RA×DEC, through center)
Sum of exposure times of all frames used to calculate the image.
All image processing steps are deterministic. There was no manual retouching or any other kind of non-reproducible adjustment.
No AI was used; the images shown here are the results of deterministic calculations and not hallucinations of an AI.
Image processing steps where:
Bias and dark current subtraction, flatfield correction, noise estimation
Alignment and brightness calibration using stars
Stacking with masking unlikely values and background correction
Extracting stars from the emission line images using information from continuum images
Denoising and deconvolution both components (stars and residual)
RGB-composition (same factor for stars and residual for the true color composite)
Dynamic range compression using non-linear high-pass filter
Dominic Lagrois and Gilles Joncas.
On the Dynamical Evolution of H II Regions: An Investigation of the
Ionized Component of W4, A Galactic Chimney Candidate. II. Kinematics and
Dynamics in the Latitude Range 3°; < b <= 7°.
ApJ, 693(1):186–206, March 2009.
[ DOI ]