B33 is a perfect example of dark nebula, which is universally known as the Horsehead Nebula for its shape. B33 is greatly noticeable, being spotted over the bright nebula IC434 : the contrast between the two is simply exceptional. The Horsehead measure 6x4', and was discovered by E. Pickering in the year 1890 over some photographical plates.

Camera : Starlight Xpress SXV-H9 with Astronomik 13nm Ha filter


Telescope : Takahashi FS-102 at F/6 with focal reducer on a GM2000-FS2


Guiding : ST4 on a Vixen 80/910mm.


Exposure : 6x600sec. unbinned


Processing : MaxIm (align, combine, stretching) - Photoshop (final enhancing)


Location : Champorcher (Val d'Aosta) - 1800 mt. height


Date : October 25, 2003

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