Wednesday, November 4, 2015

Active Sunspot Region 2443

Had thin clouds on Sunday but I wanted to try to get a photo of active sunspot region 2443 that I've been hearing so much about. I haven't taken many sun photos with my DIY solar filter for my DSLR, but when there is an especially large active region they are fun to catch.

I had a little haze - well, more than haze, I had thin clouds I was trying to shoot through. The sunspot active region was large enough to see even though the clouds without a telescope. I just used a 300mm lens with the DIY solar filter over the top.

The hardest part is focusing with the additional filter over the lens and the glare of trying to look at the camera display screen in the daylight. Auto focus doesn't quite do it with the additional layer over it, of course the clouds don't help either.

November is looking good for some stargazing, but I don't think I'll be taking many more solar images during the week. By the time I get home it's already getting dark!

sunspot through clouds
Active sunspot region 2443 on Sunday, November 1, 2015 - Single shot with Canon T5i edited in Instagram
Instagram actually does a good job bringing out the contrast in sunspot images. I didn't list the acquisition details under the image above because I cheated it too much. Below is the original image out of the camera, which in this case is my trusty Canon T5i.

300mm sun image
Canon T5i single frame at f/7.1, 1/30 sec, ISO 100, 300mm

For comparison, here is a look at what the face of the sun looked like at the same time, but through much better gear from the Solar and Heliospheric Observatory (SOHO).

soho image

And if you were wondering, this is what my setup looked like. Identical to my setup last year, but with worse atmospheric conditions. In both cases, stacking actually didn't do much good and I ended up using single images.

canon solar filter
Canon T5i and home made solar filter attachment

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