diff --git a/flows/load_image.py b/flows/load_image.py
index 3e47795..cefbdeb 100644
--- a/flows/load_image.py
+++ b/flows/load_image.py
@@ -300,7 +300,7 @@ def load_image(FILENAME):
 		elif telescope == 'SAI-2.5' and instrument == 'ASTRONIRCAM':
 			image.site = api.get_site(13) # Hard-coded the siteid for Caucasus Mountain Observatory
 			if 'MIDPOINT' in hdr:
-				image.obstime = Time(hdr['MIDPOINT'], format='mjd', scale='utc', location=image.site['EarthLocation'])
+				image.obstime = Time(hdr['MIDPOINT'], format='isot', scale='utc', location=image.site['EarthLocation'])
 			else:
 				image.obstime = Time(hdr['MJD-AVG'], format='mjd', scale='utc', location=image.site['EarthLocation'])
 			image.photfilter = {
diff --git a/tests/input/SN2020aatc_K_20201213_495s.fits.gz b/tests/input/SN2020aatc_K_20201213_495s.fits.gz
new file mode 100644
index 0000000..0b00ece
--- /dev/null
+++ b/tests/input/SN2020aatc_K_20201213_495s.fits.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:94a1bdcfbfd75da8c66f7d37271125353953acb16d087982d4241f05f9864c6a
+size 2909171
diff --git a/tests/test_load_image.py b/tests/test_load_image.py
new file mode 100644
index 0000000..77a8f07
--- /dev/null
+++ b/tests/test_load_image.py
@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Test loading of images.
+
+.. codeauthor:: Rasmus Handberg <rasmush@phys.au.dk>
+"""
+
+import pytest
+import numpy as np
+from astropy.time import Time
+from astropy.wcs import WCS
+import os.path
+import conftest
+from flows.load_image import load_image
+
+#--------------------------------------------------------------------------------------------------
+@pytest.mark.parametrize('fpath', ['SN2020aatc_K_20201213_495s.fits.gz'])
+def test_load_image(fpath):
+
+	# The test input directory containing the test-images:
+	INPUT_DIR = os.path.join(os.path.abspath(os.path.dirname(__file__)), 'input')
+
+	# Load the image from the test-set:
+	img = load_image(os.path.join(INPUT_DIR, fpath))
+
+	# Check the attributes of the image object:
+	assert isinstance(img.image, np.ndarray)
+	assert img.image.dtype in ('float32', 'float64')
+	assert isinstance(img.mask, np.ndarray)
+	assert img.mask.dtype == 'bool'
+	assert isinstance(img.clean, np.ma.MaskedArray)
+	assert img.clean.dtype == img.image.dtype
+	assert isinstance(img.obstime, Time)
+	assert isinstance(img.exptime, float)
+	assert img.exptime > 0
+	assert isinstance(img.photfilter, str)
+	assert isinstance(img.wcs, WCS)
+
+#--------------------------------------------------------------------------------------------------
+if __name__ == '__main__':
+	pytest.main([__file__])