This page is a continuous work in progress. It is a collection of links, tutorials, and notes I reference in my processing workflow.
|Review light, dark, bias frames and discard any frames with significant artifacts.
– Extreme star trails (i.e, due to tracking error)
– Clouds that cover a significant amount of the image
– Objects in frame (i.e., planes, trees)
– Out of focus (i.e., stars appear overly large, have halos)
Minor star trails can be left if they do not make up a significant portion of the light frames.
|Utilize weighted batch preprocessing to preprocessing and calibrate the frames. Use cosmetic correction to noise defects from sensor.
(Optional) Perform image integration to have a quick preview of what the integrated result looks like.
|Registration Frame Selection (Blink)
|Review debayered and cosmetically corrected frames using the Blink tool. Identify a reference frame for registering all images too.
– Minimal star trails
– Simple Gradients
– Lots of visible stars
|Aligns all images to a reference frame.
|Normalize Scale Gradient Workflow (Optional)
|Normalize gradients in the image to a reference image with a simple gradient.
|Stacks the images and rejects outliers according to selected algorithm.
|ESD rejection algorithm
|Generalized Extreme Studentized Deviante (gESD) Rejection
|For large stacks of images utilize the ESD rejection algorithm.
|My summarized notes.
|Drizzle Integration (Optional)
|Creates a higher resolution image by levering drizzle information.
|Not currently compatible with normalize scale gradient.
OSC Linear Post-Processing
|Crops the image to the desired field of view. Useful for eliminating areas with poor contrast due to tracking errors.
|Narrowband Color Synthesis (Optional)
|Used for images collected with narrowband filters to extract luminance information corresponding to emission lines. Used as a precursor to creating images with synthetic color palettes (i.e., HOO, SHO).
|Removes gradients from image to increase contrast of desired features to background.
|Balance Color Channels
|PixInsight Photometric Color Calibration
|Linear Noise Reduction
Multi Filter Processing