Comet ISON on November 8, 2013

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Comet ISON on Nov 8, 2013.

After shooting Comet Lovejoy, I had just enough time to shoot 4 to 8 sub-images of Comet ISON.  By that time, the sky was getting bright with the approaching sunrise and these images were all too blue.  But, I decided to try and put together a display picture anyway since it had been since Nov 4th that I last shot some images of it.

Comet Lovejoy on November 4, 2013

Comet Lovejoy.  7x60 sec @ ISO 3200, TV-85 at F/5.6, IDAS-LPS, modified Canon T3.
Comet Lovejoy. 7×60 sec @ ISO 3200, TV-85 at F/5.6, IDAS-LPS, modified Canon T3.

I shot this right after shooting 18 sub-images of Comet ISON.  Twilight was already approaching really fast and by the time I got 7 images taken, the sky was too blue to continue.   So, this version is lightened up somewhat to bring out the faint details that I couldn’t get because I didn’t get enough sub-images.   It shows the comet well enough, at least.

Below, I have included the star-streaks version:

Continue reading Comet Lovejoy on November 4, 2013

C/2013 S1 (ISON) on November 4th, 2013

Comet ISON, Nov 4, 2013.  18x60 sec @ ISO 3200, TV-85 at F/5.6, IDAS-LPS, modified Canon T3.
Comet ISON, Nov 4, 2013. 18×60 sec @ ISO 3200, TV-85 at F/5.6, IDAS-LPS, modified Canon T3.

I was experimenting with high ISO settings and short exposures for this impromptu imaging session of Comet ISON. I went with 1 minute at ISO 3200, which is equivalent to 4 minutes at ISO 800, the ISO setting I was using for most of my other ISON images. That is double what I was using before. Yes, its noisier, but tolerable in the cool 47 degree temps I had that morning.

Also, this is the full field of my imaging rig. The only cropping done was to remove places where the sub-images did not overlap. I wanted to demonstrate how large the comet is getting.

 

Comet ISON on November 3, 2013

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Comet ISON (C/2012 S1). 26×120 sec @ ISO 800, TV-85 at F/5.6, IDAS-LPS, modified Canon T3.

I shot comet ISON on the morning of November 3rd, 2013.   I devoted most of the morning to Comet Lovejoy, but there was still enough time to get nearly 30 good sub-images of this object which is enough to make a pretty decent image.  Clicking the picture brings up a half-of-full-size enlargement.  Click here to see the image at the camera’s full resolution.  The “star-streaks” version is below:

Continue reading Comet ISON on November 3, 2013