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Man on the Moon

PostPosted: Sat Mar 18, 2006 6:05 pm
by SteveGriffin
The full moon was 2 nights ago and I tried out the Bigma and 2x teleconvertor. I think I need a new tripod but this was one of the early results. Comments please.

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Full Moon 16 March 2006

PostPosted: Sat Mar 18, 2006 6:46 pm
by Gordon
Steve, I think you need to play with the levels to increase the contrast.

Gordon

PostPosted: Sat Mar 18, 2006 7:14 pm
by LostDingo
Steve, is this as shot or cropped out of interest?

PostPosted: Sat Mar 18, 2006 7:14 pm
by Oneputt
Steve in the past I have used the Bigma to photograph the moon and found that by shooting very early morning rather than late at night the moon appeared to be closer. The Bigma can produce some really sharp images.

PostPosted: Sat Mar 18, 2006 11:03 pm
by SteveGriffin
The shot is as shot no crop. I have increased the contrast as mentioned - have I overdone it now??. The early mornings are a bit of a trick for me as I am always on my way to work before the sun. :roll:

Image

PostPosted: Sun Mar 19, 2006 1:49 am
by Gordon
SteveGriffin wrote:... I have increased the contrast as mentioned - have I overdone it now??. The early mornings are a bit of a trick for me as I am always on my way to work before the sun. :roll:



The contrast is good, but it seems a bit oversharpened with the bright border effect around the terminator at the right hand edge where it should be dark.

The moon wont necessarily be larger in the early morning, it is dependent on if its moving closer or further away in its elliptical orbit, and since it reached apogee on the 13th of March it will be moving closer to Earth until the 28th when perigee occurs, so if you wait from the evening to the morning, it will appear slightly larger, but if you wait until the next evening it will be larger again ;)
Remember too that superimposed on this gradual increase from the 13th to 28th that it is actually closer to you when it is overhead than it is on the horizon, so will appear larger when it is highest in the sky, despite any optical illusions of how big it appears near the horizon.

Gordon

PostPosted: Sun Mar 19, 2006 12:24 pm
by SteveGriffin
3rd time lucky - I wish I knew what I was doing here. The black border appeared when I applied the contrast enhancement. I selected the black, slected inverse and the edge appeared?? photoshop quirk maybe.

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PostPosted: Sun Mar 19, 2006 6:28 pm
by Gordon
SteveGriffin wrote:3rd time lucky - I wish I knew what I was doing here. The black border appeared when I applied the contrast enhancement. I selected the black, slected inverse and the edge appeared?? photoshop quirk maybe.


OK, its getting close ;) The only other suggestion I have is to check your levels for the almost blown area around the crater Tycho, there is a large white area on your image, it may be saturated there, or it may be salvageable by adjusting the curves.
Actually I checked myself and found it is easily fixed:)


Image

Gordon