Tuesday, June 25, 2013

Venus and Vesta?

Earlier today, David Dickinson posted on twitter that there was a conjunction of Venus and the asteroid Vesta tonight. They would pass about 0.4 degrees from one another. However, separation between them changes very quickly...I looked it up and by the time it got dark in Tucson, they would be about two degrees apart. I thought, hey, I should try photographing that. Last year I successfully photographed Venus and Uranus. Vesta, however, is fainter and I would be fighting twilight so I knew it would be a tough shot. But I have bought a better camera since last year, a better tripod, and an iOptron Sky Tracker so I can take longer exposures as well.

I had to move a bit from my usual spot to dodge a bright streetlight and then ended up with a couple of power lines in the field of view. And then there is the weather! I had very little time to take pics before Venus dropped into the clouds. I got a few shots. After getting home, I tinkered with the photos in Lightroom a bit. I tried to bring out the fainter objects so the colors may be a little wonky. I then fired up Stellarium and set it to the right time and place and tried to match up the stars in Stellarium with my image to see if I could track down Vesta. First, the Stellarium image.
stellarium-001
So now my image. I have labeled a few of the prominent stars and what I THINK MIGHT be Vesta. Look for a small object right above the "t" in Vesta (click to embiggen).
IMG_7901-labeled
So, does anyone want to confirm I got it or put the kabash on this one?

While looking at Stellarium, I noticed that Ceres is not too far above Venus and they are moving toward a conjunction. Ceres will pass 4.8 degrees from Ceres on July 2nd...not quite as close, but I should have a shot at that one and hope for good weather that night!

UPDATE: I have heard from two others who have checked my photo against the chart and they agree that little smudge is in the right place and the right brightness for Vesta!

Reprinted with permission from the Half-Astrophysicist Blog.

3 comments:

OKIE said...

Thanks Hale. By the way, how is the weather up there? I hear it is pretty hot; warmest in years.

hale-bopp said...

I just looked at a pic from tonight...the object I thought was Vesta moved! That pretty much clinches it that I have it.

Mary, could be the first time ever every day in June has been over 100 and 110+ coming later this week. Surprisingly not awful in the mornings for my runs.

kkdither said...

I think you brought the southwest heat with you.