Python script for the Raspberry Pi Sense Hat which displays an image observed by the RasPiCam on the RGB LED array and also on the Pi's monitor.

astro_pi2.py

import picamera
from picamera import PiCamera
from picamera.array import PiRGBArray
from sense_hat import SenseHat

sense = SenseHat()

camera = picamera.PiCamera()

def preview():
    camera.preview_fullscreen= False
    camera.preview_window = (170, -120, 860, 950)
    camera.video_stabilization = True
    camera.start_preview()

preview()

while True:
#    preview()
#    with PiCamera() as camera:
    camera.resolution = (64, 64)
    with PiRGBArray(camera, size=(8, 8)) as stream:
        camera.capture(stream, format='rgb', resize=(8, 8))
        image = stream.array

    pixels = [
        pixel
        for row in image
        for pixel in row
    ]

    sense.set_pixels(pixels)