@article{202311.0134,
	doi = {10.20944/preprints202311.0134.v1},
	url = {https://doi.org/10.20944/preprints202311.0134.v1},
	year = 2023,
	month = {November},
	publisher = {Preprints},
	author = {Hongjun Pan},
	title = {How Long Can the Spiral Arms of Disc Galaxies Be Optically Observed?},
	journal = {Preprints}
}