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Query on Kstars/Ekos Align tool


AstroMuni

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Hi,

In the Ekos documentation about Capture & Solve it states the following:

Each time the solver is executed and returns successful results, Ekos can run on the following actions:

  • Sync: Syncs the telescope coordinates to the solution coordinates.

  • Slew to Target: Syncs the telescope coordinates to the solution coordinates and then slew to the target.

  • Nothing: Just solve the image and display the solution coordinates.

In general when you do a capture & solve the 'Slew to target' option is chosen. When Ekos attempts to Align the scope to a chosen target it captures an image, solves, if it notices a discrepancy it slews again. So at each of these iterations, does it sync the scope closer and closer to the target?

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I've had it cycle half a dozen times when KStars and the mount were REALLY disagreeing. Usually it's three for me. I never do a star align on my mount, and I almost never leave it set up two nights in a row. So when I reassemble it, the mount always is a bit mistaken about where it's really pointing and its first slew is invariably off.

I believe that the Polar Alignment Assistant, like Capture and Solve, syncs the mount to the solution. Since it's going start reasonably close, even  a blind solve happens pretty fast and then you're GTG.

[Edited to  add] Ah, I have no idea whether it syncs the mount at each stop along the way.  I suppose you could tell by watching the hand controller readout for changes.

Edited by rickwayne
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From memory it syncs after each successive solve if you select Slew to Target until it reaches the desired accuracy level that you define on the screen.

I find that it works very well overall, also good for quickly imaging the same target again based on an image from the last session.

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