Episode 3: Calibration and Correction Tools in PixInsight

In this third episode, we continue to delve into the fascinating workflow within PixInsight , moving towards a more calibrated, precise, and natural processing of our astronomical images. In this installment, we'll explore five tools that, working together, will help us calibrate and improve the visual appearance of the image:

ImageSolver — Allows us to associate astronomical coordinates to our image, an essential step for PixInsight to "understand" which region of the sky we are processing.

SpectroPhotometricFluxCalibration (SPFC) — Uses real star data to calibrate the image's light flux, ensuring a more faithful representation of the intensity of each channel.

MultiscaleGradientCorrection (MGC) — Corrects background gradients at multiple scales, ideal for removing subtle color or lighting casts without losing detail.

SpectroPhotometricColorCalibration (SPCC) — Adjusts color balance with photometric precision, based on star catalogs, achieving natural and balanced colors.

SCNR — Our finishing touch: It removes residual green tones in a controlled manner, leaving a cleaner and more harmonious image.

This episode marks a key point in the processing: we went from having an integrated image to obtaining a realistic and scientifically coherent calibration.

The video is now available for subscribers with access to the data folder. I invite you to follow the tutorial step by step and share your results with the community!

In the next episode, we'll take a significant leap forward in enhancing detail. We'll delve into the fascinating world of deconvolution and explore the potential of BlurXTerminator and Deconvolution , an AI-powered tool that redefines how we restore sharpness to our astronomical images. We'll learn to apply these techniques carefully and judiciously to reveal subtle structures without compromising the natural appearance of the final result.

✨ See you among the pixels and the stars. — Alberto Pisabarro