Posts Tagged ‘bright’

Venus, Jupiter and the Moon, Cosmic Ballet in February and March 2012.

February 21, 2012

For those who have been paying attention to the sky over the past few months, you will have seen Venus crawl out of the evening twilight, and Jupiter sink towards it.  These two VERY naked eye planets (both outshine even the brightest stars) are now only about 15 degrees apart (about the spread of your fingers held out at arms length), with that value set to shrink to about 3 degrees over the next 3 weeks.  Get the popcorn is ‘cos its gonna be a fantastic show!

The ballet is highlighted in the sequence below.

Venus Jupiter conjunction of 2012 (click to enlarge)

A) t= 0.  Jupiter and Venus hang in the evening sky.  Venus, by far the brighter of the two lies below Jupiter, and the pair are separated by about 15 degrees.  For reference, the Moon and Sun are about half a degree in diameter, and your outstretched fingers at arms length are about 15 degrees in angular size.

B) t= 5days.  The moons orbit takes it out of the solar glare and by the 26th it resides between Venus and Jupiter.  This will be a spectacular sight for those who get to see it, with the 2nd, 3rd and 4th brightest objects so close together in the sky.  The angular distance between the two planets has now closed to about 10 degrees.  Most of this apparent motion of Jupiter is due to the Earth moving around the Sun, while with Venus, about half of the apparent motion comes from this planet orbiting the Sun.

C) t~21 days. The Venus, Jupiter conjunction of 2012.  The two most spectacularly bright planets appear at their closest  (~3 degrees).

D) t~33days.  The Moon has now made a complete orbit since it last visited these planets.  When it last did, Jupiter was the higher, and Venus the lower.  The second time the moon visits these planets the order is reversed!  Venus the beguiling bright is now the higher of the two objects!  The objects are again separated by about 10 degrees.

For those who want to see what this looks like in animation form, take a look!  Download the  free solar system visualization software Celestia (http://www.shatters.net/celestia/)

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A bright Supernova for NOT the Oregon Star Party!

September 4, 2011

Well the supernova sure has brightened a lot over the last week!

Supernova in M101, August 25th 2011, about a 3 hr exposure with an 11in scope and 2500 iso on a canon D60.

From the night of the 3rd sept. 1.5hr exposure comprised of 20s unguided exposures (chosen frames) of a cpc1100 with a canon 60d at prime focus (f6.3 reducer).

It now easily outshines the galaxy core and is the brightest thing in the field.

So it turns out one of the reasons I had the Pine Mountain Observatory to myself to do ‘supernova LIVE’  (Sept 1st) was because some of the folks had drifted off to the Oregon Star Party.  I too was advised to go, in part for the great skies of the ochico, and part for the company.

Getting there was a bit of a nightmare in that I set the wrong GPS coordinates (a combination of relatively little sleep the night before, and just drifting along with the scenery).  Either way, by the time I worked it out I was 50 miles down the road, and the GPS kept on trying to send me down dirt roads to nowhere to get back.  The tricky thing about dirt roads, is if they are good, you can get up to 45 mph-ish.  If they are not good, not only will you be doing well to make walking speed, but 10 feet can make the whole thing utterly impassable to a polite little underpowered low clearance suburban car like mine! (or the even more devastating, can get the car stuck!) Thus it was after an hour or so detour down a road that started like a ‘freeway’, then it  narrowed and narrowed and eventually turned into a road where I might as well have been trying to drive down a rough rutted river bed.  I think I did well to survive the turn around! Especially seeing as I was miles in the middle of nowhere by this point, with no apparent traffic on the road!  Eventually I decided to retrace my steps down the black top and do it right!

Thus is was that it was about 5pm by the time I arrived at the Oregon Star Party.  I had a brief exchange with the staff, who insisted on a 75 dollar registration fee.  I told them I was there just to take a look around- ’75 dollars’, that I probably wouldn’t even be there a full day ’75 dollars’, and so it went on.  Just for the record, that would make visiting the Oregon Star Party significantly more expensive than Disneyland, which is some 85 dollars for a day pass.  Apart from the OSP is just a bunch of guys sitting out under the stars ontop of a hill.  Now I was actually interested in talking to some of the vendors they had there, particularly Celestron and Orion (the latter about their crappy capture device on their deep sky video camera), but I was knackered.  So I put up my feet in the car and dozed a bit, trying to recover some strength and in part to work out what to do.  Eventually the organizer came out and said they were ‘locking the gate’ at 7pm.  This was bullshit, there was no gate.  Shit what were they going to do imprison everyone ontop of the hill for the night?.  I got his message thoguh, so at that I rolled back a mile or so down the road and found a place with a good northern horizon and set up the scope.  The ochico is notorious for having a fine dust that gets onto and into everything, including optics, and so I was quite happy to not have folk around disturbing the dust.  Set the scope up on M101 and cooked myself some ‘ramen noodle’ soup type stuff.  Hunger and a bad day are by far the best cooks, and it was the best meal I’ve thus far had on the road, snarfed down with butter and bread! Ahhhh!  Then I basically went to sleep for a few hours till M101 effectively set before packing up the scope.  Skies were, I have to say good!

Next day, I meandered over to the John Day fossil beds.  They were on the map and I had no real idea what the hell it was all about.  Turns out there are some fairly reasonable badlands here, full of fossils.  Regrettably however the fossil museum was an hour down the road in the wrong direction, and a tired thunderf00t wasn’t really up for it.  The sedimentary stuff here coincidentally is from the primitive cascades, and goes back 20 million years!  Yeah, exactly to when the supernova overhead capped off…..ooooooh!

Some of the 'Badlands' near the John Day Fossil Beds Oregon.

Picked up wifi and power at Prineville and processed the acquisitions of the night before, as well as a video of supernova so far.  By that time I had really only enough light in the day to make it back to Pine Mountain, where fortuitously, the deep sky forecast was near perfect!  Plus this really the last chance before the moon becomes a serious issue for a couple of weeks to get a good piccie of the supernova.

On Saturday night on Pine Mountain they do outreach, so I agreed to give them a hand: that night many a person was put into perspective with the Cosmos! 🙂  The odd thing was, all of this was apologetically put into perspective with distance and years in the millions, and of the hundred or so people I talked to, there wasn’t so much of a sign or a peep from anyone expressing the young earth creationist view!