A quick-n-dirty 2x2 mosaic of M45 to try out my new QHY600M-PH camera and auto-focusing w/ a Starzona MicroTouch focuser . This is my first mono target, and 1st at f/7, having previously imaged at f/10 using a stock DSLR. Seeing was below average. I used Sequence Generator Pro with four targets, one for each panel in the 4-panel mosaic. Each panel had three 5x120s events, one for each filter, 30 min per panel. Nowhere near enough, but what time would allow. I chose to rotate through events to try and get an equal number of frames for each filter in case I needed to abandon my imaging session.  After completing the 4 panels (30 min of integration; 2 hr session), I was able to capure another 3x120s per filter on the 4th panel before the target dropped below trees.

SGP Auto-focus worked well, although I didn't read the docs well and was surprised (although shouldn't have been) that it refocused with each filter change (the 1st use of the filter in a given target). I've confirmed my filters are parfocal, so I've since unchecked the aptly-named "Auto adjust focus per filter" option; I suspect my next session won't waste this valuable imaging time. ;-)

Re-centering after meridian flip was challenging. Plate-solve showed thousands of pix off in RA, and it refused to move the scope sufficiently to correct. It would move closer by a 100 or so, then move away, then closer, than away, than ... I finally disconnected SGPro, used the hand-controller to slew to home, re-initialized the scope, did a single star alignment, slewed to M45, and then reconnected SGP and plate solve again. SGP centering then worked beautifully. I need to troubleshoot this, since I lost at least 30 minutes futzing about. This is a new computer, so I suspect I missed a configuration tweak somewhere...

There are some strange arc-shaped artifacts in the middle of the image that I suspect are relections.

- 4 panel mosaic, 20% overlap; 40% moon (to the SW) for most of acquisition
- RGB binned 2x2; -10C
- 5 frames per filter for each panel
- another 0-3 frames per RGB filter per panel before target moved behind trees
- flats x 25 per filter taken next morning after removing image train as one unit (OAG -> CFW -> Camera; reducer remained on OTA)
- master dark
- WBPP calibrate + register
- Winsorized Sigma Clipping Image Integration w/ default params each panel
- Dynamic crop each channel in each panel (each panel cropped separately)
- Combine Channel -> RGB for each panel
- Rotate each panel 180 (loses astronomic solution)
- DynamicBackgroundExtraction each panel
- ImageSolver each panel (to recreate astronomic solution)
- GradientMergeMosaic - overlay (1,2,3,4); shrink=6; feather=10
- DynamicBackgroundExtraction the mosaic
- ImageSolver
- PhotometricColorCalibration
- Arcsinh stretch x 2 
- HistogramTransformation