Note: I decided to join the Starghan CAL at Crochetville while making this project.
I made a lot of progress on the starghan since Sunday morning. I credit the progress to crocheting while watching episodes 1-3 of Discovery Channel's planet earth. (What an amazing documentary!! If you didn't see it Sunday, I suggest checking it out this weekend.)
So far it is 10" from center to point.
I'm going to continue with another rainbow and see how big it is at that point (and how much yarn I have left). If it's close to its final size, I'll just finish it off with a wide white border.