I recently aquired a scanner for the purposes of OCRing foreign-language papers and then running them through an automatic translator, rather than actually being able to read foreign languages like proper academics do. One spin-off from the purchase is that it came with a gadget to let you scan slides.
Now, unlike most people I know, I do actually have some slides - the product of spending your teenage years taking photos of the night sky, rather than doing something healthier, like talking to girls.
So, for the first time on the internet, some of the results. First up, Comet C/1996 B2 Hyakutake:
Then, a bit later, Comet C/1995 O1 Hale-Bopp:
With the constellation CassiopeiaTaken slightly later, you can see that the tail has changed shape as the comet changes position relative to the sun