| Joined: | Mon Apr 2nd, 2012 |
| Location: | South Lakeland, UK |
| Posts: | 4066 |
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Here are some images from my first attempt with the Vixen Polar mount.
The first is a 100% crop (that is one sensor pixel to one screen pixel, these are all screenshots from Lightroom, hosted on Flicker) this is with the polar mount doing it's thing, nor perfectly set up but pretty near.
The second is a similar crop after I had switched off the Vixen tracking motor.
Now for the trails, bear in mind each exposure starts at 40 second intervals, 25 seconds of exposure, 15 seconds gap.
34 'Star Trail Stacked' exposures using the Vixen Polar mount. The squiggles are due to uneven tracking, why it's uneven I don't yet know. Like I said above, it may be due to the motor gear's alignment with the main worm gear shaft, or it may be due to stiff grease causing hard spots in the rotation.
This is 38 'Star Trail Stacked' exposures, including the ones with the motor switched off, you can clearly see the exposure length and gap in the final four exposures, the mount is really doing it's stuff, almost perfect.
Finally a 100% crop of the previous image.
I have a lot of testing to do to check out the veracity of the polar scope and the uneven tracking.
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Robert.