Waning Moon at 17.63 Days

Image Title: Waning Moon, colorfull, 17.63 days 87.9%

Copyright: Jaime Fernández

Date image was taken: December 07, 2025

Location: Valdemorillo - Spain

Data Acquisition Method: Personal Telescope Setup

Description and Details: Although the waning moon presents very different images than those obtained with the waxing moon, many amateur astronomers think it's not worth observing because the details are the same as those seen a few days earlier during the waxing phase at a more convenient time. For me this isn't true and whenever I can I take the opportunity to marvel at the enormous differences. It's a whole new world to discover.

Despite appearances, the surface of the Moon has color and it is possible to capture it with a color or monochrome camera. Each color is due to the large-scale presence of some type of mineral in the lunar crust, from basalts and iron oxides to titanium.

The color tones are very subtle, but real (it is not synthetic color), so during image processing the color saturation must be increased to crominance to make it visible, taking care of luminance as a source of detail and contrast.

This color image have been taken with a color camera. The procesing technique uses all three RGB channels for chrominance and the green RGB channel as luminance.

Direct link to author's webpage: https://www.astronomica.es/imagen.asp?id=1&seccion=1&id_prod=698

Name: Jaime Fernandez

Website or Facebook Profile: http://www.astronomica.es