Visual magnitude: -10.8 Apparent size: 29.9′
Diameter: 3475 km. Distance: 1.33 light seconds
When the Moon is high and bright, I am sometimes still tempted to do some home imaging, if the sky is clear. I will usually take a video of the Moon while I wait for full darkness.
This is what I got after processing 500 video frames recorded last Thursday, with a ten day old Moon. It came out with a rather pinkish colour this time, possibly due to bushfire smoke or my still evolving photographic skills, I can’t be sure which.
I didn’t like the pink though, so I faded most of it out.
One thing noticeable in the image is the number of white ejecta rays emanating from some of the larger craters. They show up in the highland areas but contrast especially well in the darker maria areas.
Some of the craters are two billion years old – and so – by implication – is the associated ejecta. That’s a long time for debris to be lying around. I wonder how long the Apollo astronauts footprints will remain on the surface. Possibly a lot longer than the lifetime of human civilisation!
The Lunar magnitude of -10.8 is about seven magnitudes brighter than the magnitude -4 Venus I saw low in the West. That’s about 650 times brighter. It’s left me wondering about the magnitude of that wretched new LED street light they recently installed to thwart my astronomy activities. A few magnitudes more than a full Moon, I reckon. 😨
End of Blog
Image & Processing:
|Location: outer suburban
Image acquisition: SharpCap video.
|Telescope:||SkyWatcher Esprit||Type:||120 triplet refractor|
|Focal:||840 mm F/7||Mount:||SkyWatcher EQ6-R Pro|
|Camera:||ZWO ASI 071 MC Pro
||Type:||CMOS 28.4mm 16 Mpx
|Optical aids:||Flattener: Y; filter: LP||Guiding:||No|
[ZWO ASI071MC Pro]
Images © Roger Powell