So seeing some sky shots with Night Mode, I decided to do a midnight experiment. I pulled out a small tripod and phone clip. I discovered if you are hand holding the iPhone, your Night Mode is limited to 10 seconds. However if you are on a tripod, the Night Mode will take a 28 second capture. So that is what you see here. A 28 second capture of the night sky over Northern California, using the telephoto lens. You cannot see this with your naked eyes. There's too much light pollution. However I suppose going out to the country side, might yield better results.
This shot is using the Slow Sutter App. It's a 60 second shot of the same as above. However I didn't have the freedom to choose the framing. I need to play with the program more.
Here's the shot again, running for 277 seconds. I didn't have a timer. However my dog came by and wondered what I was doing. I figured it was enough time. The blip in the light trail, is the delay from the previous image to the second, still the open shutter time is listed in the exif data.