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| Catalogue and alternative designations | DeHt
1, PK 11+17.1, Longmore Tritton
1
|
| Type | Planetary nebula |
| Position | 05 55 06.6, -22 54 02 |
| Constellation | Lepus |
| Camera and Telescope | STXL6303E and 36.3 cm Ritchey Chretien |
| Focal Ratio | F9 |
| Exposure Details | Ha:OIII:OIII image with 3nm Ha and OIII Astrodon filters. Ha=270 minutes and OIII=300 minutes. This was combined with a LRGB exposure of L=120minutes, R=G=B=45minutes |
| Description |
DeHt 1 is a planetary nebula thought to contain an intermediate-period binary central star system ( that is, a system with an orbital period, P, between 100 and, say, 1500 days). It is large and faint, the diameter being 128". |