NGC 5307
| Planetarischer Nebel NGC 5307 | |
|---|---|
 | |
| Aufnahme des Hubble-Weltraumteleskops | |
| AladinLite | |
| Sternbild | Zentaur |
| Position Äquinoktium: J2000.0 | |
| Rektaszension | 13h 51m 03s [1] |
| Deklination | −51° 12′ 21″[1] |
| Erscheinungsbild | |
| Scheinbare Helligkeit (visuell) | 11,2 mag [2] |
| Scheinbare Helligkeit (B-Band) | 12,1 mag [2] |
| Winkelausdehnung | 0,3′ × 0,3′ [1] |
| Zentralstern | |
| Bezeichnung | HD 120489[3] |
| Spektralklasse | O3.5V C |
| Physikalische Daten | |
| Rotverschiebung | +0,000140 ± 0,000017 [3] |
| Radialgeschwindigkeit | (+42 ± 5) km/s [3] |
| Entfernung | 11.315 ± 2.900 Lj |
| Geschichte | |
| Entdeckung | John Herschel |
| Datum der Entdeckung | 15. April 1836 |
| Katalogbezeichnungen | |
| NGC 5307 • ESO 221-PN11 • GC 3661 • h 3541 • AM 1347-505 | |
NGC 5307 ist ein planetarischer Nebel im Sternbild Zentaur und hat eine Winkelausdehnung von 0,3' und eine scheinbare Helligkeit von 11,2 mag.
Das Objekt wurde am 15. April 1836 von John Herschel entdeckt.[4]
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Autor/Urheber: Judy Schmidt, Lizenz: CC BY 2.0
NGC 5307 looks a little strange to me. The nebula shrouding the central star has an interesting, almost nacreous appearance. It reminds me of the inside of a shell of abalone. The whole thing is kind of blurry. Is that because the nebula is dissipating and no longer so sharply defined?
The usual knots of bright, glowing H-alpha are once again red in appearance.
In blue, some He II (f469n) data seemed quite specifically concentrated in the core of the nebula so I emphasized it quite a bit even though it doesn't glow especially brightly.
I went ahead and used the data labeled "heritage" in the HLA. The label makes me wonder if someone else deserves credit for doing some processing before me. Then again, I've been wondering just how much of the data in the archive is automatically processed and how much is done by humans. It seems like a rather thankless job if there are humans doing much of the work.
Red: hlsp_heritage_hst_wfpc2_n5307_f675w_v1_sci_sci + hlsp_heritage_hst_wfpc2_n5307_f658n_v1_sci_sci Green: hlsp_heritage_hst_wfpc2_n5307_f656n_v1_sci_sci + hlsp_heritage_hst_wfpc2_n5307_f555w_v1_sci_sci Blue: hlsp_heritage_hst_wfpc2_n5307_f502n_v1_sci_sci + hlsp_heritage_hst_wfpc2_n5307_f469n_v1_sci_sci + hlsp_heritage_hst_wfpc2_n5307_f439w_v1_sci_sci.