Polarissima Borealis (NGC3172) Galaxy in Ursa Minor

(RA 11h 50.2m , Dec. +8907', 13.6 mag., 0.7 x 0.7 arcmin.)

This small and faint galaxy happens to lay close to North Celestial Pole (see finder chart below) - in 1830s NCP was located within the area covered by the above tiny CCD field! PGC36268 galaxy (16 mag.) is also located nearby.

The above image was obtained on July 28, 2003 from Harrowsmith, Ontario with self-guiding Cookbook 245/211 CCD camera on a Celestron Ultima 8 f10 SCT. Guiding was not used because the target is so close to the North Celestial Pole. Eleven white images (60 sec. each) were processed using AIP4WIN.

North is toward upper right corner.

Map created in Guide 7.0 - 745' x 745'.

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Jan Wisniewski