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Old 25-09-2022, 05:37 PM
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pmrid (Peter)
Ageing badly.

pmrid is offline
 
Join Date: May 2008
Location: Cloudy, light-polluted Bribie Is.
Posts: 3,681
OCAL collimating a newtonian

I’m getting used to this device. I use it on an SCT and a newt. I’ve got the SCT organised alright because there is basically only the secondary mirror to adjust. But the newt is a bit less intuitive and the instructions are bleedin’ hopeless and the videos are often contradictory.

The sequence seems to me to be:
1. Load the software and start the camera.
2. Open camera properties and set the exposure, focus etc to your taste.
3. Identify the bottom of the focuser drawtube, open the green circle and activate the LeftRight and UpDown box.
4. Adjust the green circle to accurately match the size of the drawtube bottom for size and use the LR UpDown to accurately overlay it on the drawtube bottom.
5. Identify the reflection of the primary mirror. Open a red circle and adjust its size to match it.
6. Use the secondary mirror adjustment screws and overlay the red circle on it.
7. Open the blue circle and match and overlay it to cover the reflection of the OCAL device. Activate the crosshairs.
8. In the reflections, and using the focus and other camera adjustments, identify the reflection of the primary mirror center spot.
9. Using the primary mirror knobs, move the crosshairs to overlay the donut.

The result does not coincide with my laser tool. Perhaps it’s the problem. Not sure.

Does anyone use a different workflow?
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