The waning crescent Moon joined Venus and Mars in the dawn sky.
I blogged about this conjunction a few days ago, and here is the real thing.
On the morning of September 10 the waning crescent Moon gathered near bright Venus and much dimmer but redder Mars (at left) in the dawn sky.
Venus and Mars have both moved into the morning sky, where they will begin a series of conjunctions with the Moon and with Jupiter, now just emerging from behind the Sun, over the next two months. This gathering is just the start of the dawn planet dance.
For the technically minded, this is a high-dynamic range stack of 5 exposures to accommodate the large range in brightness between the sky and Moon, and to preserve the earthshine on the “dark side of the Moon.”
I shot this with the Canon 6D and 135mm lens at f/2 and at ISO 800 in a set of 8, 4, 2, 1 and 0.5-second exposures, blended with HDR Pro in Photoshop using 32-bit mode of Adobe Camera Raw.
— Alan, September 10 2015 / © 2015 Alan Dyer / www.amazingsky.com
The Amazing Sky 
Alan, is it possible to use HDR techniques to reveal the crescent phase of Venus?
Not at this image scale, I would think, and the issue is its still embedded in a lot of bright haze, certainly here and often in most skies when you expose long enough to see the blue sky. The correct exposure for the crescent would be very short, so masking in a short exposure on top of a long one might work better. Maybe!