Bug 420373

Summary: Feature request: Bahtinov mask focus assist tool
Product: [Applications] kstars Reporter: Patrick <pr_molenaar>
Component: generalAssignee: Patrick <pr_molenaar>
Status: REPORTED ---    
Severity: normal CC: mutlaqja, pr_molenaar
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Other   
OS: All   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: GUI example for Bahtinov focus assistant.

Description Patrick 2020-04-21 11:18:59 UTC
Created attachment 127742 [details]
GUI example for Bahtinov focus assistant.

SUMMARY
Implement Bahtinov focus in Ekos.

Allow focus using a Bahtinov mask. This should be an expansion of the current focus implementation in kstars/Ekos.

As Bahtinov focus is usually done on one star at the time, the auto select star should be disabled, forcing the user to select the star on which to perform the Bahtinov focus algorithm.

For the Bahtinov focus algorithm the algorithm used in the Bahtinov-grabber project can be used (and adapted to fit in kstars/Ekos).

STEPS TO REPRODUCE
1. Point your telescope at a bright star and place the Bahtinov mask on your telescope
2. Start kstars
3. Open Ekos
4. Connect to camera
5. Select focus tab
6. Select detection algorithm Bahtinov
7. Capture an image
8. Select star in image
9. The Bahtinov lines will be shown in the image and the HFR (or focus error) is shown below the V-Curve

OBSERVED RESULT
Not applicable as it is a new feature

EXPECTED RESULT
Assist in focus using a Bahtinov mask

SOFTWARE/OS VERSIONS
All supported OS.

ADDITIONAL INFORMATION
See attached screenshot.
Comment 1 Patrick 2021-03-08 15:41:22 UTC
Added developers issue to update documentation for this feature.
Feature was implemented in KStars v3.4.3. Documentation was still behind.