Click on this thumbnail to see the full image, then make sure to hover the mouse over the full size image to explore the H-alpha emission nebulae in M31! The image is a two-panel mosaic taken using a narrowband Hydrogen-alpha filter, revealing hundreds of emission nebulae.
M31 H-alpha emission nebulae
Re: M31 H-alpha emission nebulae
Very cool Andy! The mouse-over blew my mind for a minute there with the transition between panels, but I'm o/k now.
"The purpose of life is the investigation of the Sun, the Moon, and the heavens." - Anaxagoras
Re: M31 H-alpha emission nebulae
Andy as all ways amazing detail. Are you sure you're not a photographer for National Geographic????
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Ioptron IEQ 45 Pro mount
Ioptron tripier
Ioptron eq 25 mount
Ioptron tripod
Celestron #93709 next image solar system imager
Unitron 3 inch equatorial mount W/ tracking motor and tripod
Restored ED 102 Vixen ss Doublet
"Ilagitami non carborundum" Uncle Nick '49
Re: M31 H-alpha emission nebulae
Just super. And the mouse over is really cool !!
Don
Don
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When I was 21, I could not believe how much he had learned in 3 years." --- Mark Twain
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When I was 21, I could not believe how much he had learned in 3 years." --- Mark Twain
Orion 120mm F/5 Refractor
Celestron 8
Explore Scientific 80 Triplet
Explore Scientific 102 Triplet
Orion 8" Astrograph
Re: M31 H-alpha emission nebulae
Now with this http://ned.ipac.caltech.edu/level5/ANDR ... rames.html you can start picking out the objects in Andy's great image.
Paul...
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16" f/5 Night Sky Truss (Midnight Mistress)
10" f/5 Home built Dob with Parks mirror.
Pre-Meade PST
Celestron Skymaster Binos 25-125x80
Meade Travelview Binos 10x50
See that 16" in the sleek black dress? She is all mine. :)
Re: M31 H-alpha emission nebulae
Thanks for the kind comments, guys.
Paul, those M31 charts are really cool. I tried matching up some of the charts with the full-res image, but interestingly most of the Ha features from the image are not present in the charts. And vice-versa, many of the features in the charts are not visible in the Ha image. I did notice that the text references a couple other sources identifying H II regions-- Baade and Arp 1964 and Courtes et al. 1978 -- but I wasn't able to locate either of those sources online. I bet I could find them if I looked a little harder. Anyway, it's interesting to see how things appear differently in narrowband H-alpha compared to ordinary broadband CCD or photographic images even though the Ha light is present in the visible light range of the broadband images.
Paul, those M31 charts are really cool. I tried matching up some of the charts with the full-res image, but interestingly most of the Ha features from the image are not present in the charts. And vice-versa, many of the features in the charts are not visible in the Ha image. I did notice that the text references a couple other sources identifying H II regions-- Baade and Arp 1964 and Courtes et al. 1978 -- but I wasn't able to locate either of those sources online. I bet I could find them if I looked a little harder. Anyway, it's interesting to see how things appear differently in narrowband H-alpha compared to ordinary broadband CCD or photographic images even though the Ha light is present in the visible light range of the broadband images.
Andy