Wednesday, January 7, 2015

Another clear night, another try at Comet Lovejoy 2014

This is the result of stacking 31 - 30 sec exposures with my Canon t3i piggy backed on the Celestron C8, using the zoom lens set at 250mm @ f/5.6, ISO 3200.
This is a wide shot... the circular "hot spot" is an artifact of the lens,
yet you can "see" that the tail extends well into it.

Since the Earth rotates, the stars "trail." But since I am guiding on the comet it does not trail.
Here is a close up:

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