Add method to retrieve lenses from DeepskyLog.

Author: WimDeMeester

pydeepskylog/__init__.py

@@ -1,10 +1,10 @@
 from .version import __version__
 from .contrast_reserve import contrast_reserve, optimal_detection_magnification, surface_brightness
 from .magnitude import nelm_to_sqm, nelm_to_bortle, sqm_to_nelm, sqm_to_bortle, bortle_to_nelm, bortle_to_sqm
-from .deepskylog_interface import (dsl_instruments, dsl_eyepieces, calculate_magnifications,
+from .deepskylog_interface import (dsl_instruments, dsl_eyepieces, dsl_lenses, calculate_magnifications,
                                    convert_instrument_type_to_string, convert_instrument_type_to_int)
 
 __all__ = ["__version__", "contrast_reserve", "optimal_detection_magnification", "surface_brightness", "nelm_to_sqm",
            "nelm_to_bortle", "sqm_to_nelm", "sqm_to_bortle", "bortle_to_nelm", "bortle_to_sqm", "dsl_instruments",
-           "dsl_eyepieces", "calculate_magnifications", "convert_instrument_type_to_string",
+           "dsl_eyepieces", "dsl_lenses", "calculate_magnifications", "convert_instrument_type_to_string",
            "convert_instrument_type_to_int"]