Centering target

[anilkumar007]

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 ?

 

Quote

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.
 

 

[astroman133]

It may be helpful for the developers to see the entire log file. Please click on the link below and follow the instructions to submit the file. Do not post it to the forums.

Thanks!

[admin]

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/

[astroman133]

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.

 

[anilkumar007]

I am not sure issue is with my setup, i tried centering with NINA using ASTAP and it works fine, issue seems to be when i use BYN, even with BYN it worked 1 or 2 times. And i do not use eqmod setup.