| filename extensions | art-335 |
| hnd | |
| TechTarget file types | art-336 | HND-HNSKY-Deep-Sky-Database-File |
| TechTarget file types | art-336 | HND-HNSKY-Deep-Sky-Database-Header |
| English | eng-000 | HNSKY Deep Sky Database File |
| English | eng-000 | HNSKY Deep Sky Database Header |