This is one of most beautiful stellar dendrite snowflakes that i captured past winter, but it was hard to process because of aligning problems (wind shifted and rotated it during serial shooting). It's diameter was around 5-6 millimeters from tip to tip.
8 serial shots averaged to boost signal-to-noise ratio. Background: dark woolen fabric, natural light (gray clouded sky), external optics Helios 44M-5, January 2013, Moscow.
Prints: Artist website.
Licenses for commercial use also available.
Interested how these images are made?
Check out detailed article: snowflake macro photography!