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© D Elijah
Credit Please credit D Elijah if you are using this image.

SS 2572 06/08/2016


Date of image 06/08/2016

Sunspot 2572 near the western limb.

Hardware details: Camera: Canon 550D in 640x480 movie crop mode. Exposure 1/1000s, ISO auto mode, 60 fps. Telescope: SW Skymax 150 Maksutov no filter. Mount: EQ5 pro.

Clouds were present and did interrupt imaging, atmospheric transparency was good, but there was turbulance especially when the Sun was moving closer to nearby trees.

Polar alignment was pretty good considering I used only a compass. 

Processing was first done with Pipp, which decompressed the .mov files and rejected 75% of bad frames. I then pass the uncompressed .avi to Rigistax, where I align, reject the remaining 95% of frames leaving about ~150 frames and then stack the result. The stacked image is then processed with the first wavelet increased relative to the other wavelets. The gamma curve is adjusted to increase contrast. The final image is then cropped to reeve the grainy (poorly sampled) edges.


Please credit D Elijah if you are using this image.


© D Elijah

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