diff --git a/VERSION b/VERSION
index ad91aa9..0d25275 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-master-v0.4.8
\ No newline at end of file
+master-v0.4.9
\ No newline at end of file
diff --git a/flows/load_image.py b/flows/load_image.py
index db66d8e..7ecfad3 100644
--- a/flows/load_image.py
+++ b/flows/load_image.py
@@ -128,9 +128,11 @@ def load_image(FILENAME):
 				image.photfilter = {
 					'B Bes': 'B',
 					'V Bes': 'V',
+					'R Bes': 'R',
 					'g SDSS': 'gp',
 					'r SDSS': 'rp',
 					'i SDSS': 'ip',
+					'i int': 'ip', # Interference filter
 					'u SDSS': 'up',
 					'z SDSS': 'zp'
 				}.get(hdr['FILTER'].replace('_', ' '), hdr['FILTER'])
@@ -142,9 +144,11 @@ def load_image(FILENAME):
 				if len(filters_used) == 1:
 					image.photfilter = {
 						'V_Bes 530_80': 'V',
+						'R_Bes 650_130': 'R',
 						"g'_SDSS 480_145": 'gp',
 						"r'_SDSS 618_148": 'rp',
 						"i'_SDSS 771_171": 'ip',
+						'i_int 797_157': 'ip', # Interference filter
 						"z'_SDSS 832_LP": 'zp'
 					}.get(filters_used[0].replace('  ', ' '), filters_used[0])
 				else:
diff --git a/flows/ztf.py b/flows/ztf.py
index 1fac6bb..09188f8 100644
--- a/flows/ztf.py
+++ b/flows/ztf.py
@@ -101,11 +101,11 @@ def download_ztf_photometry(targetid):
 	# Create Astropy table, cut out the needed columns
 	# and rename columns to something better for what we are doing:
 	tab = Table(data=jsn)
-	tab = tab[['fid', 'mjd', 'magpsf_corr', 'sigmapsf_corr']]
+	tab = tab[['fid', 'mjd', 'magpsf', 'sigmapsf']]
 	tab.rename_column('fid', 'photfilter')
 	tab.rename_column('mjd', 'time')
-	tab.rename_column('magpsf_corr', 'mag')
-	tab.rename_column('sigmapsf_corr', 'mag_err')
+	tab.rename_column('magpsf', 'mag')
+	tab.rename_column('sigmapsf', 'mag_err')
 
 	# Remove bad values of time and magnitude:
 	tab['time'] = np.asarray(tab['time'], dtype='float64')
diff --git a/requirements.txt b/requirements.txt
index db9c492..ae03ff1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 pytest
 flake8
+flake8-tabs !=2.3.0,!=2.3.1
 flake8-builtins
 flake8-logging-format
 numpy >= 1.16
diff --git a/run_download_ztf.py b/run_download_ztf.py
index facfac3..fe9bdda 100644
--- a/run_download_ztf.py
+++ b/run_download_ztf.py
@@ -48,7 +48,7 @@ def main():
 
 	# Check that output directory exists:
 	if not os.path.isdir(output_dir):
-		parser.error("Output directory does not exist: '%s'" % output_dir) # noqa: G002
+		parser.error(f"Output directory does not exist: '{output_dir}'") # noqa: G004
 
 	# Use API to get list of targets to process:
 	if args.target is None:
@@ -56,6 +56,10 @@ def main():
 	else:
 		targets = [api.get_target(args.target)]
 
+	# Colors used for the different filters in plots:
+	# I know purple is in the wrong end of the scale, but not much I can do
+	colors = {'gp': 'tab:green', 'rp': 'tab:red', 'ip': 'tab:purple'}
+
 	# Loop through targets:
 	for tgt in targets:
 		logger.debug("Target: %s", tgt)
@@ -67,12 +71,12 @@ def main():
 		# Download ZTF photometry as Astropy Table:
 		tab = ztf.download_ztf_photometry(tgt['targetid'])
 		logger.debug("ZTF Photometry:\n%s", tab)
-		if tab is None:
+		if tab is None or len(tab) == 0:
 			continue
 
 		# Write table to file:
 		target_name = tab.meta['target_name']
-		tab.write(os.path.join(output_dir, '{0:s}-ztf.ecsv'.format(target_name)),
+		tab.write(os.path.join(output_dir, f'{target_name:s}-ztf.ecsv'),
 			format='ascii.ecsv', delimiter=',')
 
 		# Find time of maxmimum and 14 days from that:
@@ -85,16 +89,17 @@ def main():
 		ax.axvline(maximum_mjd, ls='--', c='k', lw=0.5, label='Maximum')
 		ax.axvline(fortnight_mjd, ls='--', c='0.5', lw=0.5, label='+14 days')
 		for fid in np.unique(tab['photfilter']):
+			col = colors[fid]
 			band = tab[tab['photfilter'] == fid]
 			ax.errorbar(band['time'], band['mag'], band['mag_err'],
-				ls='-', lw=0.5, marker='.', label=fid)
+				color=col, ls='-', lw=0.5, marker='.', label=fid)
 
 		ax.invert_yaxis()
 		ax.set_title(target_name)
 		ax.set_xlabel('Time (MJD)')
 		ax.set_ylabel('Magnitude')
 		ax.legend()
-		fig.savefig(os.path.join(output_dir, '{0:s}-ztf.png'.format(target_name)), format='png', bbox_inches='tight')
+		fig.savefig(os.path.join(output_dir, f'{target_name:s}-ztf.png'), format='png', bbox_inches='tight')
 		plt.close(fig)
 
 #--------------------------------------------------------------------------------------------------
diff --git a/setup.cfg b/setup.cfg
index cb821ca..9dbb766 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -2,7 +2,14 @@
 exclude = .git,__pycache__,notes
 max-line-length = 99
 
-enable-extensions=G
+# Enable flake8-logging-format:
+enable-extensions = G
+
+# Configuration of flake8-tabs:
+use-flake8-tabs = True
+blank-lines-indent = never
+indent-tabs-def = 1
+indent-style = tab
 
 ignore =
 	E117, # over-indented (set when using tabs)
@@ -18,11 +25,13 @@ ignore =
 	E305, # expected 2 blank lines after class or function definition, found 1
 	E501, # line too long
 	E701, # multiple statements on one line (colon)
-	W191, # indentation contains tabs
 	W503, # Line break occurred before a binary operator
+	ET128, # (flake8-tabs) unexpected number of tabs and spaces at start of XXX
 
 [tool:pytest]
+addopts = --strict-markers --durations=10
 testpaths = tests
+xfail_strict = True
 
 #[coverage:run]
 #branch = True