Comet Gerradd 2009P1


Twice in a week – almost unheard off for me 🙂

But it’s not every day that a Comet is visible in bino’s or in an easy part of the sky to see… So even though it was a day past full moon and the sky was very bright I had to give it a go.

Took 50 3 minutes exposures – in hindsight 2 minutes might have been better – and a stack of calibration frames.

Having some trouble combining the images to show the comet movement over the near 3 hour period, but the comet stacked worked ok. If you look at the stars closely you can see a little nick to the top – that was the Off Axid Guider slightly in the optical path. That is also now fixed!

For some reason I’m having trouble attaching images 🙁 – the software doesn’t like % signs in file names…

All these images are 50% of the original.

1. A standard stack – which should be single moving comet, but the stack has created two…??? I’m still trying to work out why!

2. The image was stacked in DSS using the comet and star stacking routine that stacks the comet and then does the stars separately.

3. Lastly this image is the same as above but inverted to bring out the tail.

 

 

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