smoka preview request

def get_suprimecam_mosaic_preview(frame_id="SUPA0010598X"):
    """
    Retrieve a PNG mosiac preview from the SMOKA site
    :param date:
    :param frame_id:
    :return:
    """
    endpoint = "http://smoka.nao.ac.jp/qlis/ImagePNG"

    frame_id = frame_id.replace("X", "0")
    params = {'frameid': frame_id,
              'grayscale': 'linear',
              'mosaic': 'true'}

    return requests.get(endpoint, params=params).content