Originally posted by bdery Quebec city's suburbs are probably not worse than NYC suburbs... It's probably because I usually shoot the sky at wider angles indeed. I'll try your technique soon.
Regarding aim, how do you determine if the camera points your target?
Usually, I do a rough aim, take a test photo, look at the LCD to see if I have something interesting on the back. Re-aim if needed. If photographing a dim object you can crank up the ISO to shorten exposure time on the test, then return to a more moderate ISO with longer exposure for the actual photos.
Wide angle makes it easy to find targets. Look for the band of the Milky Way during summer and you are good. The Milky Way changes orientation each season and sometimes hugs the horizon, so be wary of that.
You are further north than me. Good for aurora, bad for Milky Way. The brighter portions of the Milky Way near the constellation Sagittarius will be low on your southern horizon during summer. That's a target-rich area with 50mm or 100mm. Try scanning the Milky Way working your way up from there. The Cygnus area has some interesting dust lane detail.
With a 200mm or 300mm lens and astrotracer, you can try the Andromeda Galaxy. You might be able to see it naked eye from a dark site to aim, otherwise learn how to "star hop" to find it. The Orion nebula is a winter object very east to find near visible stars in the "sword" of Orion.
TLDR; it pays to learn some astronomy.