ACP console log opened 05-Jun-2025 07:36:00 UTC This is ACP version 9.2 (build 1, ACP 9.2.1 (Production)) Licensed to Arne Henden 07:36:00 This is AcquireScheduler V9.1.3 07:36:00 Custom image file path/names are in use 07:36:00 [PreFlip=300 PostFlip=300 AF=180 PU=60] 07:36:00 Hardware GEM pier side reporting is available. 07:36:01 Initializing AcquireSupport V9.2.4 07:36:01 Weather safe, server is Boltwood Cloud Sensor II 07:36:01 Telescope is ACP->TM61, driver V3 07:36:01 Dome is MaxDome 07:36:01 MaxIm DL is version 6.28 07:36:01 Imager is ASCOM 07:36:01 Using focus offsets and star mags from FilterInfo.txt 07:36:01 Selecting filter SU from previous ACP run at 20250605@073400 UTC 07:36:01 Imager readout modes: 07:36:01 0 is Fast 07:36:01 1 is Normal 07:36:01 Guider is SX Universal (no rotator) 07:36:02 Guider plate scale is 0.2 arcsec/pix. Guided dither with main imager pixels 07:36:02 Max unguided exposure 59 sec. 07:36:02 Guider is set to multi-star mode 07:36:02 (assuring that FocusMax is running now...) 07:36:09 Calculated unbinned plate scales (arcsec/pix): H = 0.23 V = 0.23 07:36:09 Calculated field of view (arcmin): H = 36.3 V = 24.3 07:36:09 Plate solving with GSC 1.1 (ok for wider fields) 07:36:09 Mount supports tracking rate offsets 07:36:09 ==== Starting target NGC_6638 ==== 07:36:09 ACPS Observation NGC_6638(1 of 1) 07:36:09 (belongs to Project AAVSO_Pgc_Welch_AUTO_ver4538, Plan NGC_6638) 07:36:09 (turning on sidereal tracking) 07:36:09 Pointing updates are enabled 07:36:09 Catalog Maximum Mag = 18.0 07:36:09 Start slew to NGC_6638... 07:36:11 (wait for slew to complete) 07:37:11 (slew complete) 07:37:11 [flip check: Tn=420s HAc=-3971s GW=T HAz=-3551s DWz=T WF=no] 07:37:11 Updating pointing... 07:37:11 Switching from SU to SR filter for pointing exposure 07:37:11 No focus change required 07:37:11 (taking 10 sec. exposure, SR filter, binning = 4) 07:37:11 (using Fast readout mode) 07:37:11 (starting exposure) 07:37:29 (exposure complete) 07:37:32 (exposure complete and image downloaded) 07:37:32 Camera temp (deg.C) = -7.7 07:37:33 Focuser position = 3338 07:37:33 Focuser temp (deg.C) = 22.6 07:37:33 Image finished 07:37:33 Plate-solve pointing image. 07:37:34 6685 image stars found 07:37:34 386 catalog stars found 07:37:35 Solved! 135 stars matched. 07:37:35 Average residual is 0.31 arcsec. 07:37:35 Pointing error is 0.988 arcmin @ angle 98.65 07:37:35 True focal length is 3467.1 mm. 07:37:35 True binned plate scales (arcsec/pix): H = 0.89 V = 0.89 07:37:35 True image center (J2000): 18h 31m 00.4s -25° 29' 59.81" 07:37:35 Imager sky position angle is 179.0 deg. 07:37:35 [sync] pointing model updated 07:37:35 Within max error tolerance, no re-slew needed. 07:37:35 Target is now centered. 07:37:35 (high cadence option, no web previews) 07:37:35 (long exposure, trying to autoguide) 07:37:36 Switching from SR to SG filter for imaging 07:37:36 Focus change of 50 steps required 07:37:38 (take guider image at initial interval 5 sec) 07:37:48 Multi-star guiding, MaxIm chose star at X=51.18779 Y=65.089 07:37:48 ** This guide star disappeared or moved > 20 pixels. Can't continue. 07:37:49 **No usable stars in guider image; trying again at max guider exposure 07:38:01 Multi-star guiding, MaxIm chose star at X=1325.986 Y=608.1262 07:38:02 (guide star SNR=20.1 X=1326 Y=608) 07:38:02 (first exposure estimate 1.49 sec) 07:38:07 ** This guide star disappeared or moved > 20 pixels. Can't continue. 07:38:07 **No usable stars this time, must be extremely weak, giving up. 07:38:07 **Autoguiding failed. ACP console log closed 05-Jun-2025 07:38:08 UTC