October 20, 2021

The full moon last night.

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We've had a few clear nights this week, with seeing and transparency both hovering near average. It's been a demanding month at work, but I had to step out last night, Takahashi in hand, to catch a glimpse of Jupiter and Saturn. The glare of the rising full Moon, however, discouraged me from going to the park near my house - it would just be too bright, I thought - so I popped up to my rooftop for a quick look. 

A prospect for considering distant times and faraway places.

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That rooftop really isn't suited for serious observing. Somehow the concrete slabs thrum with vibrations from my building, and the warm air boiling from the rooftop always worsens the seeing, sometimes dramatically. Nevertheless I did steal a few clear, stable glimpses of Jupiter and Saturn: enough to make out countless zones and bands on Jupiter, and the Cassini Division on Saturn. The small, orange disk of volcanic Io, I believe, was just about to move across the Jovian clouds; I've been so overworked lately that I didn't bother to check. 

Then I looked over at the Moon, still rising in the east. Like most observers, I always prefer the Moon when it's only partly illuminated - I love the shadows along craters and mountains - and in any case tonight it was clear that the atmosphere along the eastern horizon was just not going to cooperate. Seeing and transparency in that corner of the sky, it seemed, were particularly challenging. Still, the Moon is always - always - a striking sight through a fine refractor, no matter the state of the atmosphere. 

After about fifteen minutes, I packed up and stepped back inside, thoroughly pleased that I'd ventured out despite my fatigue. It's almost always like that: even when tired, there are few things I'd rather do.