Showing posts with label M51. Show all posts
Showing posts with label M51. Show all posts

Saturday, May 11, 2013

Age of Aquarids

Last weekend had beautiful clear skies and was pretty close to the peak of the Eta-Aquarid meteor shower so I spend the night at the Observatory at Bisbee Hill.  My astro-buddy Jim had a spanking new Canon 60D he was chomping at the bit to try out on the scope.  After resolving a bit of alignment as well as PC issues we decided to shoot a couple galaxies I've been wanting to hit.  These three images were processed with out darks subtracted because Randy wasn't there to remind us (it's all your fault, Randy).  I may reprocess them with darks later to see if it can improve anything.

We started with the Whirlpool Galaxy (M51), that's always a favorite lying in the constellation Canes Venatici (Boötes' hunting dogs).  This shot is 29 frames stacked and processed with Deep Sky Stacker then touched up a tad in Photoshop.  The focus could be admittedly better but not bad for the virgin astrophoto on the new DSLR.

















We then moved on to the Black Eye Galaxy (M64).  Quite an interesting little (or unfathomably huge depending on your perspective) gem lying in the constellation Coma Berenices. This image is 29 stacked frames.

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Coma Berenices is apparently a satellite superhighway because we captured 4 of them traveling through our tiny window on the sky.  Kinda nifty.










The Sunflower Galaxy(M63) is another found in Canes Venatici.  It was pretty bleh in the individual images, I almost didn't bother processing them but after stacking it really popped (I guess that's the point though, isn't it?).

















While we were shooting with the scope I had my camera shooting a time lapse of the Eta-Aquarid meteors. The radiant is in the constellation Aquarius and specifically the star Eta-Aquarii, "Eta" being the 7th brightest star of the constellation.  Aquarius was set to rise in the east around 2:30 so I decided a "Milky Way rise" time lapse was in order.  I set up my camera with a wide lens and intervalometer set at 45 sec and started shooting around 11:30pm until my battery died at 4:05am.  I hoped I could make it until the Moon rose over the treeline but apparently I need to invest in a battery grip to double my power.  I captured at least three meteors towards the end of the night.  The local farm kids were having quite a party in the woods at the bottom of the video.  At one point they decided it would be fun to drive a truck up to the observatory, but when we gave them the international sign for cut the lights (or maybe they thought we were threatening to cut their throats?) they quickly returned to their bonfire.  This is my best time lapse to date, definitely something to improve on, I've got much more to learn.





Saturday, April 14, 2012

Last chance at Orion

[Thursday, April 12]
Tonight was my last opportunity to shoot Orion until winter.  It's on the heels of the sun in the southwestern sky in the early evening and is completely out of sight before midnight this time of year.
Arguably, the most recognizable northern hemispheric constellation holds one of the most active star forming regions nearby in our own the Milky Way.  The Orion Nebula (aka: Great Nebula in Orion, M42, NGC 1976) is actually the middle "star" in Orion's scabbard.  If you grab some binoculars and look at Orion's scabbard, the three closer stars lined up almost perpendicularly below the three wider belt stars, you'll see that those three little stars are actually multiple stars in three little open clusters. If you look long enough at (and around; averted vision really makes it pop) the middle group you will see wispy clouds shaped like wings wrapping around the little stars in the center.  Those little stars in the center are a cluster of very young stars called the Trapezium.  The wispy clouds are gas an dust in the process of condensing into stars.  Read an interesting recent post by Phil Plait, the Bad Astronomer on the Orion Nebula.


Here she is, this may just be my favorite photo I have ever taken.  I've been trying to shoot Orion for a long time but without a tracking mount it was extremely frustrating. With my camera piggyback mounted on a Meade RCX 400 it's a breeze. Thanks to the Observatory at Bisbee Hill guys for use of the equipment.
15 frames via DeepSkyStacker @ 81mm 40sec f6 ISO1000 

I also pointed the scope at a couple prominent galaxies near the tail of Ursa Major or the handle of the Big Dipper and snapped away.  This is the Whirlpool Galaxy (aka: M51a, NGC 5194) located just under the last star of the dipper's handle (picture the dipper right side up, like a spoon lying on a table).  As you can see, it appears to be a large spiral devouring a smaller galaxy (M51b or NGC 5195) but the smaller galaxy is actually passing behind the Whirlpool, merely gravitationally tugging on it.  This galactic encounter sparks massive star formation in the Whirlpool Galaxy, the pinkish/purplish hues are nebulous regions.

11 frames via DeepSkyStacker @ 81mm 2min f6 ISO2000

This is the gorgeous spiral galaxy M101 (NGC 5457) also near the end of the Big Dipper's handle.  Find it by looking at the last two handle stars and make an equilateral triangle pointing up (again, think of the dipper as horizontal), at the top of the triangle you'll find M101. There's three other galaxies visible in this image as well.  At 10 o'clock from M101 is NGC 5477 and straight to the left edge of the frame from there is a tiny edge-on galaxy NGC 9071.  The Fuzzy blob at the bottom is NGC 5474.
12 frames via DeepSkyStacker @ 81mm 2min f6 ISO2000

Another Ursa Major treat, Comet Garrad was visible (it's the green thingy), it was fantastic night!



[4/13/12]
Friday night was a bit hazy and observing was kind of a flop but this was our beautiful horizon.  Nice lineup of Canis Major, Orion, Taurus, Venus, Pleiades, and Perseus' leg.