Comet C/2002 Y1 (Juels-Holvorcem)




Description: As of this writing, this comet is between the orbit of Mercury and Venus but well north of the plane of the solar system at a calculated distance from earth of 1.1 au and 0.9 au from the Sun.  At the time of the exposures, it was in the constellation of Cepheus.  The FOV of this image is approximately 14 x 20 arc-min.  West is up.
Exposure Data: 3/1/2003.  RGB: 6x2m, 6x2m, 6xm, RGB 2x2. -20C, 1.62 arc-sec./pixel.
Processing: Acquired via Maxim, reduced and aligned, and combined in Mira, RGB combined 0.85:0.89:1.0 in Maxim, curves, levels, star field assembly and other processing in Photoshop.
Optical System: 10 Ritchey-Chretien by RCOS @ F/9, ST-8E USB NABG/CFW-8A CCD camera, unguided, Paramount ME mount.
Comments: A difficult object to image due to its late rising and low horizon position position.  The average elevation was 25.  The comet was tracked at its orbital rate, then the star field was tracked at sidereal rate and the images combined in Photoshop.  Star field gradients, in addition to flat fields, were used to preserve the faint detail in the ion tail and the beginnings of a dust tail.