thanks all
I think the main reason I didn't put the Pelican in was I forgot about it! I had (what I thought was) all the potentials in a folder, and when the time came, went through them to pick the final entrant. For some reason the Pelican wasn't there, and it wasn't until after that I realised!
Oh well...
The moon shot was with a cheapy telescope we got the other day with credit card points. The camera is mounted straight into the telescope (with an adapter I had lying around) and I then manually focus and set exposure. With my eyes, it's pretty hard to focus manually :/
So far as workflow, nothing special. I have two ways of converting to black and white that I was experimenting with.
1. Using Colour Balance and then setting Saturation to zero. By changing colour balance (a layer lower than Hue) I then see the effects. I then check on the levels, and it's done.
2. Use The Channel Mixer set to monochrome. Probably less steps involved here than the 1st method. Again, make sure you check on levels afterwards.
Also, playing around with the curves helps sometimes.