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Comet 2001 Q4 (NEAT)s tail... - Possum Observatory
I am not certain but it SEEMS from my images over the last few days that Q4's tail has changed from a thin gas spike on the 10th April to a fatter 'fish tail' on the 13th, to a short fan shaped dust tail with no gas spike on the 14th April. Am I correct? These three images were taken with the same telescope and camera. The settings vary slightly, but even with longer exposures taken on the 14th the tail is not evident - unlike the 10th and 13th... CLICK ON THE IMAGE TO ENLARGE.
|Q4 - 10 April 04||Q4 - 13 April 04||Q4 - 14 April 04|
|45 seconds @ 3200 ASA||60 seconds @ 1600 ASA||30 seconds @ 1600 ASA|