Astronomy with a cellphone — how low (faint) can you go?

Looking overhead we look though less air then we look towards the horizon. This makes stars appear fainter and more distorted.
Astrophoto of the constellation Cygnus and its surrounding area
Cygnus and the summertime Milkyway rising in the East. The black shadows at the bottom are some tree tops. This picture has not been processed other than what the phone does.
Astrophoto of the constellation Cygnus and its surrounding area, marked up with star names and constellation lines.
Annotated with some star and constellation names, along with the constellation lines.
Screen capture from Stellarium of Cygnus and surrounding constellations.
Screen capture from the free Stellarium planetarium software (http://stellarium.org). Notice how Vega (mag. 0) and Altair (mag 0.76, so fainter than Vega) are shown as larger circles than other stars.
Astrophoto of the constellation Lyra
Zoom in on the constellation Lyra. The larger circle size for Vega is much more apparent.
Screen capture from Stellarium of the constellation Lyra
Zoom in on the constellation Lyra in Stellarium. This is not the same as what you would get if you zoom in on the previous screen capture. Stellarium scales the star sizes and adds fainter stars.
comparison of Stellarium and actual picture of stars
Zoom in on the star Sulafat (Gamma Lyrae, mag 3.3) and surrounding stars. Left side from Stellarium, right side from Pixel 3a.
Picture annotated with star magnitudes
Picture annotated with star magnitudes as taken from Stellarium and the decimal point not shown. Opening in new window and zoom in suggested to better see the dimmer stars captured in the photo.
Picture with Brocci’s cluster
Location of Brocci’s cluster, lower right side.
Brocci’s cluster star chart compared to Pixel 3a picture
Brocci’s cluster star chart compared to Pixel 3a picture. Annotated with uncorrected magnitudes; add 0.2 to account for atmospheric extinction at the time this photo was taken,
Zoom in on the hook area to show star colors
Zoomed in to better show star colors as recorded by the Pixel 3a

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