Friday, June 22, 2007

Another Moon


On June 18 I tried something a bit different. I used the zoom on the camera lens to magnify the 50x image produced by the telescope. I'm not sure what the magnification is here, but it's a nice photo.

If you look carefully, you can see two tiny specs of light that appear disconnected from the moon in the upper right corner of the photo. They are moon mountains, just over the moon's horizon, but high enough to catch and reflect some sunlight.

5 comments:

Great Grumpy Z. said...

It is indeed a nice photo; the contrast afforded by the shadows near the "day-night" boundary on the Moon really bring out the topography along that line.

For the non-lunar readers, you should have noted that the same side of the Moon is always pointing toward Earth. Thus these features shown on the upper left side in this photo can be seen, albeit with different lighting, in the previous photo of the nearly full Moon.

Lief said...

Excellent picture!
I like this one better than the others because of the relief and because the colors are realistic.
Nice job.

Bop-op said...

For those of you who choose to compare Moon features between photos as suggested by The Great Grumpy, please be aware that the photos posted here are up-side down compared to what you see when you look directly at the Moon. Also, longitudinal libration (apparent rotation of the Moon from side to side) amounts to almost 8 degrees, making some features on the Moon's horizon appear and disappear. The impact of libration will be quite noticable when closely examining features on a narrow strip of Moon surface.

Even more profound will be the impact of the angle of lighting. Sunlight can cause features to stand out at one angle, and be completely repressed at another angle.

Great Grumpy Z. said...

Even worse, as Kayaker has since pointed out to me, is the fact that, "up" on each picture has a different meaning (about 90 degrees different, in fact!). One was taken when the Moon was in the southeast sky and the other when it was in the southwest sky.
The large crater that Grumpy identified in this picture is NOT the same large crater seen in the upper-left part of the May 31st post.

My apologies to all, and especially to Kayaker, for my erroneous comment!

Signed, not-so-great Grumpy Z

Amboy Observer said...

That is an awesome picture.

It seems like you should be able to compensate for the mirror-image with almost any modern graphics software.