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IDProjectCategoryView StatusDate SubmittedLast Update
0002266CCdcielGeneralpublic20-01-17 05:2620-01-21 09:19
Reportergakellerman Assigned ToPatrick Chevalley  
PrioritynormalSeverityfeatureReproducibilityhave not tried
Status resolvedResolutionfixed 
Target Version1.0 
Summary0002266: Focus Temp
DescriptionWould it be possible to use ASCOM Weatherstation Environmental temperature source for auto focusing. I have a temperHum sensor mounted on my tube and am able to use it effectively in SGP so I know it works (But I prefer your program with its close connection with Sky Chart!).

Thanks for consideration.
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Patrick Chevalley

20-01-17 20:42

administrator   ~0006246

Yes, this is possible.

The simplest implementation is probably to add a checkbox "Temperature from weather station" in Device setup / Focuser.

Patrick Chevalley

20-01-18 17:32

administrator   ~0006249

I implemented the function:
https://github.com/pchev/ccdciel/commit/8a83f67123fd42acb284703c32fea4202753d055

You can download a test version for Windows 32 or 64 bit from:
https://vega.ap-i.net/tmp/ccdciel/

Open the menu Edit / Device setup / Focuser
Be sure the weather station is configured and active.
Then at the focuser tab check the option "Temperature from weather station"

Please report if it work for you.

gakellerman

20-01-19 12:41

reporter   ~0006252

I was able to do a shot (2 hour) test using the beta build and can report that it seems to function mostly as expected. The sensor temp fluctuated a little up and down during the run, but did not move more than 2 C or so.

 There is a confusing aspect that you may be able to resolve: I expected to be able to set the steps per C as a negative number ie, -12 steps per C; however the input box only allows positive numbers. I use a celestron focuser on an 11" SCT as such as the temp drops the focuser position is a lower/ smaller number.

I have attached a partial log showing that the movement is confused (Or I am) with the first 3 adjustments; then the last three are indeed backwards to what I need with my system.

I will continue to test again when to sky permits.
New Text Document.txt (1,033 bytes)    


2020-01-18T23:29:23.709 2: Focuser temperature: 0.5°C , adjust position by -6
2020-01-18T23:29:24.708 3: ASCOM.CelestronUsbMotorFocuser.Focuser: Focuser move to 22512

2020-01-19T00:14:31.641 2: Focuser temperature: 1.0°C , adjust position by 10
2020-01-19T00:14:32.645 3: ASCOM.CelestronUsbMotorFocuser.Focuser: Focuser move to 22536

2020-01-19T00:57:40.336 2: Focuser temperature: 0.5°C , adjust position by 6
2020-01-19T00:57:40.343 3: ASCOM.CelestronUsbMotorFocuser.Focuser: Focuser move to 22542

2020-01-19T01:55:29.554 2: Focuser temperature: 1.1°C , adjust position by -7
2020-01-19T01:55:29.560 3: ASCOM.CelestronUsbMotorFocuser.Focuser: Focuser move to 22535

2020-01-19T02:08:12.867 2: Focuser temperature: 1.6°C , adjust position by -6
2020-01-19T02:08:12.874 3: ASCOM.CelestronUsbMotorFocuser.Focuser: Focuser move to 22529

2020-01-19T02:54:23.272 2: Focuser temperature: 2.1°C , adjust position by -6
2020-01-19T02:54:23.278 3: ASCOM.CelestronUsbMotorFocuser.Focuser: Focuser move to 22523
New Text Document.txt (1,033 bytes)   

Patrick Chevalley

20-01-20 13:39

administrator   ~0006254

You are right, everything was programmed to work with negative offset but the input box do not allow them.
This is fixed by:
https://github.com/pchev/ccdciel/commit/cfce7e65a646737efca15f3cbe818af571868175

A new test version is available with this change:
https://vega.ap-i.net/tmp/ccdciel/

gakellerman

20-01-21 06:26

reporter   ~0006259

I made another short test run tonight and can report that the new test version is working correctly.

Patrick Chevalley

20-01-21 09:19

administrator   ~0006260

Thank you for your help with this test!

Issue History

Date Modified Username Field Change
20-01-17 05:26 gakellerman New Issue
20-01-17 20:42 Patrick Chevalley Assigned To => Patrick Chevalley
20-01-17 20:42 Patrick Chevalley Status new => assigned
20-01-17 20:42 Patrick Chevalley Target Version => 1.0
20-01-17 20:42 Patrick Chevalley Note Added: 0006246
20-01-18 17:32 Patrick Chevalley Status assigned => feedback
20-01-18 17:32 Patrick Chevalley Note Added: 0006249
20-01-19 12:41 gakellerman File Added: New Text Document.txt
20-01-19 12:41 gakellerman Note Added: 0006252
20-01-19 12:41 gakellerman Status feedback => assigned
20-01-20 13:39 Patrick Chevalley Note Added: 0006254
20-01-21 06:26 gakellerman Note Added: 0006259
20-01-21 09:19 Patrick Chevalley Status assigned => resolved
20-01-21 09:19 Patrick Chevalley Resolution open => fixed
20-01-21 09:19 Patrick Chevalley Note Added: 0006260