https://bugs.kde.org/show_bug.cgi?id=425566
Bug ID: 425566
Summary: Ekos flat frame automatic ADU algorithm is erroneous
Product: kstars
Version: git
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: mutla...@ikarustech.com
Reporter: co...@mimas.ru
Target Milestone: ---
Created attachment 131023
--> https://bugs.kde.org/attachment.cgi?id=131023&action=edit
Ekos log
SUMMARY
Exposure time estimator jumps up and down in the range of 1000x.
I set the start time a bit too early and it was getting brighter quickly while
Ekos was trying to figure out the exposure time.
STEPS TO REPRODUCE
1. Set exposure duration to 1s, type Flat, ADU target 40000, tolerance 5000, 64
frames.
2. Add sequence to the schedule, starting about an hour before dawn.
3. Start the scheduler.
OBSERVED RESULT
See the log after 2020-08-16T05:14:59.738.
It starts the job normally, but jumps in its estimation of a good exposure time
between ~0.1s and ~100s. Occasionally it settles and makes a good number of
exposures.
EXPECTED RESULT
As Sun goes up and ADU goes over tolerable 45000, it should make little
adjustments in the right direction. I expect one or two trial frames before it
finds new good exposure time.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Ubuntu 20.04 amd64
(available in About System)
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8
ADDITIONAL INFORMATION
kstars-bleeding from PPA
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