25 October 2009

Fast moving clouds are good moving clouds

If you have to have clouds, at least they can be patchy and in a hurry.

Our regular Sunday date was cancelled - their kids are a bit under the weather - and at sunset it looked fairly clear with just a couple of clouds around (this has changed the later it gets). So, went out and looked at the moon for a little while - that zoom lens is wonderful! Atlas and Hercules in full sun, as is the entirety of Serenitatis and Tranqulitatis. Then I got sent inside while J did a sketch:

I like this one.

Out again a bit later, after J had played with the collimation a bit; the zoom lens had demonstrated fairly clearly that we had some issues in that area. It's almost fixed now; our trek to a dark site will hopefully clear up all issues. Anyway, we found Jupiter - complete with a moon transit! There was a black spot, moving across, which Stellarium confirmed for me was Io. I actually thought I was looking at the moon itself, but I was actually looking at the shadow trailing behind it, which makes sense I guess. Other than that, we toyed with the notion that we might be able to see other bands (I think I could, in the polar regions, but that might have been wishful thinking), and also about whether there was a darker patch in the lower cloud band (again, wishful thinking?). We came back a bit later and the moon had just come out - little pimple on the side. So cute.

What with a big clear patch and the UHC filter (apparently good for showing up nebulae in urban areas), we decided to try for the Lagoon Nebulae (M8), around which we totally failed to see nebulosity last week. And it was indeed better! Interestingly, it was also better through the 10mm rather than the zoom; apparently the former is perfect for our little Takahashi and deep-sky objects. Anyway - nebulosity: we saw it. We also saw a bit around M20 (Trifid Nebula), although not as much.

Back to Jupiter for a last look, and J decided there was enough of a cloud gap that he would give sketching it a go...

For a fairy cloudy Sunday night, on the chilly side, it was a remarkably rewarding night.

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