I've had the APM 140 a month now. The scope is great visually. Starting to assemble the additional equipment to do some imaging, does it ever end. Here is my experience so far: I got the Stellarvue largest padded case which fits the 140 perfectly. It was recommended on CN, very handy to bring the scope in when I'm done for the night. I went with the Losmandy G811HD mount and consider that a good decision, like it a lot, good quality, very stable, always works. I got a GeminFi wifi dongle on ebay and can wirelessly run the mount with SkySafari on my iPad (very sweet setup for backyard party). My favorite eyepiece is a Stellarvue 20mm Optimus 100 degree FOV, great even in marginal seeing. PoleMaster camera makes polar alignment very precise and easy. Those were all good calls. But I kind of blew it on the small 2.5 in focuser. I got the APM 2.5 in focuser with the scope, If I had that to do over I would go for the bigger focuser. It wasn't until I got the reducer that I realized that the reducer/flattner will mount inside the larger focuser vs screwing on the back of the 2.5 in focuser. That plus an additional 71.75mm back focus requirement to the camera puts a long tail on the scope. I won't know the real impact until I get the camera mounted and focus. Still waiting for the One Shot Color ZWO ASI 071P camera to arrive. I'm hoping that was a good choice too. Hope this is helpful to those who are at the the same stage of gear acquisition syndrome. There is always one more thing you need, yes I got the L-eNhance filter and the Bahtinov mask the other day too, and the Deep-Sky Imaging Primer, I hope I have everything now! I could have bought a BMW R1250GSA and be on the road without a care.
There is so much to learn just to get going with this hobby. My dirt bike is getting lonely in the garage. While waiting for backorders I've been evaluating, various software for guiding, image capture, and basic processing, SharpCap, DSS, APT, SGP, and Nebulosity. Guiding is easy, PHD2 is free and works. I think I'll go with Nebulosity for capture and basic processing because it seems clean and logical to me, will capture on my old windows laptop and I can do basic post processing on my Mac desktop. It seems SGP and PI are the most popular suite but I don't have the mental energy for that much new software right now. SGP is a little more powerful in the image capture area but it ends there. Nebulosity will do processing on a basic level plus it's easy and has great documentation. I think once I have worked through the processes and have some basic proficiency, the learning curve for more feature rich programs will be quicker and easier. PS or PI will always be there when I'm ready whenever that occurs. Plus I will still have all my image files. I'm counting on that first streched nebula to make it all worthwhile.