Foto de un halo lunar, Júpiter, Marte y Venus desde Arizona, EE. UU.

A classic 22° ice crystal halo around the waning crescent Moon, here overexposed, with the Moon between Jupiter and Mars in the morning sky on December 5, 2015. Seeing a halo around a crescent Moon is somewhat rare as they usually require the brighter light of the Full Moon. Venus is the brightest object at bottom closest to the horizon. The three planets, along with the stars Spica (above Venus) and Regulus (at top of frame) define the line of the ecliptic here in the dawn late autumn / early winter sky. I captured this scene from southeast Arizona near the Arizona Sky Village at Portal.  This is a stack of 4 exposures from long to short (8s to 1/2s) to encompass the great range in brightness and not overexpose the crescent Moon too much. Images were layered in Photoshop and masked with luminosity masks. Automatic HDR techniques did not work well as the shortest image was too dark for ACR to find content to register in Merge ot HDR, and in Photoshop the HDR Pro module left visible edge artifacts.  The camera was on the iOptron Sky Tracker to follow the sky and register the sky for all the exposures, thus the slightly blurred ground. Taken with the Canon 6D and 15mm full-frame fish-eye lens.

Esta impresionante imagen fue tomada antes del amanecer del 5 de diciembre de 2015, en Portal, Arizona, al sur de los Estados Unidos. Se puede ver a Venus (el objeto más brillante, cerca del horizonte). Marte (punto rojo cerca de la Luna en la zona inferior), Júpiter (el objeto brillante arriba de la Luna, dentro del halo), Spica (punto azul arriba y a la derecha de Venus) y Arcturus, el punto de luz cerca del halo en la zona izquierda.

Crédito: Alan Dyer

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