[allan gould]

I often use my 5" apo for imaging but sometimes the FOV is just a little too
small for some of the larger nebula ie M42 (see lmage below), so I
thought that since SG Pro has excellent plate solving with Elbrus, I used the
photo named 127mm view as the master reference frame and plate solved it. I then used the center here feature to go to the edge of the master in all four corners about 1/10 of the pixel number/count (ie 300x250 pixels for the 8300 chip) in from the edge. For all four images for this mosaic SGPro placed the center here frame within 1-8 pixels consistently for each center here command. Most excellent.
I also used the events settings to pause and message me hints during the sequence to switch off the guiding of PhD while I was doing the center here commands and then to switch it on again which capturing more images. Great features.
The mosaic was quickly spliced together using iMerge and then a little touch up with PS3. Since the size of the chip is known then I assume that it would be easy to sdo 2, 4, 9 and 25 panel mosaics using plate solving and SG Pro. But I was lucky to squeze this one in before the clouds rolled in.
It all worked perfectly plate solving and re-focusing while chugging through the events. I really was happy. I haven't tried to make a pretty picture re the core of M42 etc but given it as is so that you can see the raw mosaic. It took all of 5 minutes to put together.
For those that may not be aware of this program, some of its extensive features are given below (I have no connection to this program other than a happy user).

•Use and save complex sequencing events (lights, darks, bias flats, filter wheels , binning, etc)
•Create and save equipment profiles to make generation of sequences fast and easy.
•Automate running auto focus routines according to user defined triggers (keeps you in focus as ambient temperature drops)
•Define sequence pause triggers for manual focus (time, intervals, etc)
•Dither between frames with your choice of three auto guiders (PHD, Astroart and MetaGuide)
•Center your ASCOM compliant telescope on any reference frame you can plate solve (even images from the Internet!)
•Center on your own images… makes framing for meridian flips and multi-night imaging sessions a snap!
•Center your ASCOM compliant telescope on any area of the image with a single click of a mouse!
•Easily perform frame and focus routines (with support for subframes high speed cameras)
•Feel at home with our highly customizable user interface (drag, dock and float small modules for almost any function)
•Over a dozen configurable UI modules (PHD graphing, Image Pan and Zoom, TEC control and more)
•User defined TEC cool down and warm up routines (to minimize thermal stress on your camera's sensitive components)
•Between frame temperature compensation (and integrated trainer)
•Easily create a “flats” sequences from your “lights” sequence
•Detailed documentation and instructional videos
•Near immediate customer support via email or the Yahoo! group

More features are being added all the time such as a plate solving polar alignment routine as well as an automated mosaic feature

Allan Gould