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Photoshop means power, which I have here flagrantly abused to create an image that still shows the real craters and maria, yet looks like no moon anyone has ever seen... Anyone want it for the cover a science fiction book? |
Date/Time | February 25, 2011, about 08:57 CST | |
Equipment | Home-built eight-inch F/5 Newtonian telescope plus Nikon D3000 DSLR | |
Settings | Telescope stopped to about F/20 using cardboard mask. Film speed set to 100 ISO. Single-frame exposure time 1/60 sec; 9 frames stacked for a total equivalent exposure of 9/60 = 0.15 sec (though the frames were merged by averaging so that the longer exposure produces lower noise rather than a brighter image). White balance auto. | |
Image processing | Cropped; 9 individual frames stacked as varying-transparency layers and then merged in Adobe Photoshop; resized for web to 1500 pix width; contrast increased 400% and brightness 100% | |
Image dimensions before resizing | about 2400x1800 | |
Focus | Fair | |
Motion blur | Negligible | |
Image noise | Moderate due to enormous contrast boost | |
Other technical comments | The darkening at the lower left is from slightly nonuniform illumination of the stopped-down telescope's focal plane. This, together with some DSLR detector dust, is apparent only because of the enormous contrast boost. |