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Centering target


anilkumar007
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Hi,

I have been having issue centering a target, i have got it to work for like 3 of 10 attempts may be, it is not consistent. ASTAP solves it correctly but doesnt seem to center it as you can see in logs, in 3 attempts angle diff doesn't seem to change, i expect it to reduce as attempts go up, is there a limit after which it can no longer slew if angle is too much ?  what am i doing wrong ?

 

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00:13:01  PlateSolve (attempt #1)
00:13:09  Syncing Telescope.
00:13:09  +---RA    diff: 71770.330 arcsec.
00:13:09  +---DEC   diff: 584.139 arcsec.
00:13:09  +---ANGLE diff: 53760.295 arcsec = 13820.1 pixels.
00:13:14  Unable to set Av, current setting is assumed!
00:13:28  PlateSolve (attempt #2)
00:13:36  Syncing Telescope.
00:13:36  +---RA    diff: 71796.661 arcsec.
00:13:36  +---DEC   diff: 573.247 arcsec.
00:13:36  +---ANGLE diff: 53779.536 arcsec = 13825.1 pixels.
00:13:40  Unable to set Av, current setting is assumed!
00:13:54  PlateSolve (attempt #3)
00:14:02  Syncing Telescope.
00:14:02  +---RA    diff: 71805.134 arcsec.
00:14:02  +---DEC   diff: 566.323 arcsec.
00:14:02  +---ANGLE diff: 53786.581 arcsec = 13826.9 pixels.
00:14:07  Center complete.
 

 

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I got your latest log file,  The issue is that EQMOD is not synching the mount when the sync command is sent.

2020-10-17 20:27:17,228 [23] DEBUG - Solved coordinates (J2000):
2020-10-17 20:27:17,228 [23] DEBUG - +-- RA : 23h 49m 31s  :::  23.82536534
2020-10-17 20:27:17,228 [23] DEBUG - +-- DEC: +42° 37' 08" :::  42.61893423
2020-10-17 20:27:17,229 [23] DEBUG - Telescope current coordinates: (J2000):
2020-10-17 20:27:17,230 [23] DEBUG - +-- RA : 20h 41m 26s  :::  20.69067621
2020-10-17 20:27:17,230 [23] DEBUG - +-- DEC: +45° 17' 01" :::  45.28362751
2020-10-17 20:27:17,230 [23] DEBUG - Syncing to coordinates: (J2000):
2020-10-17 20:27:17,230 [23] DEBUG - +-- RA : 23h 49m 31s  :::  23.82536534
2020-10-17 20:27:17,230 [23] DEBUG - +-- DEC: +42° 37' 08" :::  42.61893423
2020-10-17 20:27:17,703 [23] INFO  - Syncing Telescope completed.
2020-10-17 20:27:17,719 [23] INFO  - Telescope properties after sync.
2020-10-17 20:27:17,720 [23] INFO  - Telescope SkyWatcher driver,EQ6 Series current properties.
2020-10-17 20:27:17,720 [23] INFO  - +--- Epoch                : J2000
2020-10-17 20:27:17,720 [23] INFO  - +--- RightAscension       : 20.69045019 : 20h41m26s
2020-10-17 20:27:17,720 [23] INFO  - +--- Declination          : 45.28360605 : 45°17'01"           <<<<===== should be 42.61893423
2020-10-17 20:27:17,721 [23] INFO  - +--- Altitude             : 80.46334790 : 80°27'48"
2020-10-17 20:27:17,721 [23] INFO  - +--- Azimuth              : 293.10365879 : 293°06'13"

 

Please take a look at this thread, you may have EQMOD not setup properly.

https://stargazerslounge.com/topic/326449-sync-not-working-on-eqmodcdc/

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It is possible that this is a bug in the Transform class of the ASCOM.Astrometry. dll. This bug was introduced in ASCOM 6.5. It will be fixed with the Service Pack 1 release that is due out very soon.

The symptoms are that if the client is re-using the same Transform object to perform, for example, J2000 to JNow transformation, that the Transform object will continue to report the previous coordinates instead of the new coordinates.

 

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