Posted 20 August 2013 - 08:32 AM
Posted 20 August 2013 - 10:59 AM
Posted 20 August 2013 - 11:29 AM
Posted 20 August 2013 - 02:56 PM
Very good sketch of Crater Bailly .
Posted 20 August 2013 - 03:03 PM
In answer to your question Jef concerning the slight blue and red color...The original is sketch was done on black Artagain sketch paper with black and white conte crayons and pencils. It has no color other than the black, white and gray tones. But when I observe the moon, I really do see slight but definite colors. I know the different lavas of the surface are truly distinct ( and even named )and some of them I see as blue, some reddish and even hints of green. As an optometrist, I've needed to test patients for color perception and I've "trained" myself to be aware of even slight color differences. I am aware of what is chromatic aberation through the Celestron refractor ( it's an achromatic, not an apochromatic scope ) and what I think is real color. So I played with the final image in Picasa until it showed this little bit of color. I don't know how to sketch exactly the colors I see on the moon. I've thought of trying some colored pastels on the black sketch paper but haven't done so yet. Do you think I should leave out this effect of a suggestion of color and just do a grey scale? I would love to hear what you think! I so appreciate the work I've seen here. Not many of my fellow amateur astronomy enthusiasts ( those I know in person ) are interested in sketching!
Posted 20 August 2013 - 03:55 PM
No, not at all! It gives your sketches a personal touch. I never paid attention to color on the Moon. I'll give it a try next time.
Do you think I should leave out this effect of a suggestion of color and just do a grey scale?
Posted 21 August 2013 - 12:43 AM
A beautiful capture of crater Bailly. The floor details, ramparts, rims and even the colors you see add much to the composition. The Moon is not just black and white and grey, as you say - color is visible. We all have different perceptions of color on the Moon. I tend not to pick it up so well with direct vision. Nevertheless, the colors are there and you see them so they should be included.