Thanks all for the comments.
Steve, don't worry mate. I am down south at the observatory and it is clear here and I would expect Adelaide will be too sometime tonight.
Bob, that is Melbourne that copped the storms, we are just fine and dandy in Adelaide.
Scott that could well be the case. It was interesting that the Ion tail that I captured several days ago did not have this blue but I think you are right.
Hey Trev only one of these lenses is a quality lens. The 50mm is 25 years old and one of the first AF lenses I got with a F501 I bought.
Peter, not all the weather has been great, but I am happy to receive more clear skies for the next week or so while I am at the observatory. Time to nut down and get the RC imaging. Test images yet to start flowing.