Astrophotography by Mario Cogo

Blue Flash


Impressive and rare sunset with Blue Flash, Green Rim and sunspots. The Blue Flash is a rare phenomenon to see because usually the atmosphere scatters the refracted blue sunlight more than red and green component. When the atmosphere is extraordinarily clear like at the Roques de los Muchachos site on "La Palma-Canary Islands" also the blue flash can be seen.

This picture was  Astronomy Picture of the Day  by NASA  ( 9 January 2002 ) 


- Date / Location : 17/10/2001 from Roques de los Muchachos "La Palma" (Canary Island - Spain)
- Optics / Lens : Astro-Physics Traveler 105mm EDFS + Big Barlow 2X TeleVue (1220mm focal length) - Nikon FM2
- Mount / Guide : Astro-Physics GE-600E GTO
- Exposure / Film : 1/2000sec. on Fuji Provia 100 Film
- Processing : Film scanned at 2700 dpi with Nikon CoolScan LS30 scanner, PhotoShop UM 75-2-2
- Note : No filter used  


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All the images in this site are Copyright  1996 - 2002  by  Mario Cogo

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