| Joined: | Mon Apr 2nd, 2012 |
| Location: | South Lakeland, UK |
| Posts: | 4066 |
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However, just for fun this morning I stacked them in photoshop and blended them that way. I aligned them manually although they were very close, the error was well less than half a small star between any of them. The 11 images I selected for star 2 were chosen from about 70 exposures, The 11 images were taken over 22 minutes, so any error could have been much greater.
This is my setup 'in the field'. Note the kneeling pad, just the right height to view through the DR-3 fitted to the Polar scope.
This is the combined 11 exposures stacked in Ps CC. Taken towards the South East, lowish in the sky, a bright star. The light pollution to the south is worst aspect at that site, Lancaster, Morecambe, Ulverston and Barrow all contribute to making a low contrast sky.
This is a 100% crop from the above full frame image, there are no noticeable signs of elongation of the stars due to Earth rotation.
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Robert.