Markers are low quality when used with plotly

[davidshumway]

The following produces a ~20MB PNG file. However, as seen in the attached image, the marker quality appears to be quite low. Is there any way to easily improve the quality of markers?

import plotly.graph_objects as go
import pandas as pd
tk = '...'
fig = go.Figure()

fig.update_layout(
  width=800, height=1500,
  showlegend=False,
  mapbox=dict(
    accesstoken=tk,
    center=dict(lat=32,lon=-117),
    zoom=11,
    style='light'
  ),
)

fig.add_trace(go.Scattermapbox(
  lat=b['lat'], lon=b['lon'],
  mode='markers',
  marker=go.scattermapbox.Marker(
    size=22,
    color='rgb(242, 177, 172)',
    opacity=0.8,
    symbol=['marker']*23,
    allowoverlap=True,
  ),
  hoverinfo='none'
))

fig.show()
fig.write_image("image.png", scale=10)

[davidshumway]

Here's another example