The August issue of Astronomy Now is available. The rich, open cluster NGC 6940 is featured in this column where we take a look at basic methods for scanning and inverting your black on white sketches to convert them to white on black positives.
| Subject: | NGC 6940 |
| Issue: | August 2009 Astronomy Now |
| Basic Media: | Charcoal and graphite on artist grade paper. |
| Suggested Materials: |
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Inverted, Positive Sketch of NGC 6940
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Original Negative Sketch of NGC 6940
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