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Paul Stewart
17,636 followers -
What could possibly go wrong
What could possibly go wrong

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My year in review
Here are a few of my images taken during 2015
I think I showed great restraint not to fill the whole image full of Suns :)
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Today's Ha Sun
Lunt LS80Tha/B18/DSII and Grasshopper 3 camera
#sunspots #astrophotography
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It's a hard life when you have to rough it in places like this ;)
#astronomyroadtrip 
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ISS Moon transit from the early hours of this morning
Composite of 23 frames.
Z80 refractor and Grasshopper 3 camera
#iss #moon
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Today's Ha Sun
Lunt LS80Tha/B18/DSII and Grasshopper 3 camera
#sunspots 
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Today's CaK Sun
Z80 refractor with Lunt B1800 CaK module and Chameleon 3 camera
#sunspots #astrophotography
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Today's Ha Sun
9 panel mosaic
Lunt LS80Tha/B18/DSII with 2.5x Powermate and Grasshopper 3 camera
#sunspots #astrophotography
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Animated GIF of the raw CaK data from the ISS Sun transit.
This is a lot slower than the actual transit time, it only took 400ms for the ISS to travel across the disk. 
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So the Ha capture of the ISS-Sun transit didn't turn out as good as the CaK one.
The camera, Grasshopper 3, frame rate was a bit slow for the magnification being used resulting in a blurry ISS 
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Today's Sun with International Space Station Transit.
I thought I was going to miss this but the clouds miraculously parted at the right time.
The ISS traveling at 7.7km/s only took 400ms to travel across the edge of the Sun.
Captured with a Lunt Calcium K filter at a wavelength of 393 nm, this is an emission line of Calcium and shows the lower chromosphere.
A 80mm Z80 refractor was the scope used and a Pt Grey Chameleon 3 camera.
#iss #sunspots #astrophotography


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