Comet Ikeya-Zhang

Image taken April 13, 2002, with the 237 camera on the Nikkor 105mm F:2.5 lens. Exposure is 120 seconds. I need to change the dessicant in my camera- I am getting some moisture on the chip. Color combine was a LRGB done with Maxim DL. I had great difficulty obtaining the separate exposures between cloud layers that kept drifting across the field of view.
This is the luminance frame, uncropped, a 120 second exposure.