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Imaging telescopes or lenses: Takahashi Epsilon 130D
Imaging cameras: Atik One 9.0 with OAG
Mounts: EQ8
Guiding telescopes or lenses: Takahashi Epsilon 130D
Guiding cameras: Atik One 9.0 with OAG
Filters: Astrodon SII 1.25 3nm · Astrodon Ha 1.25 3nm · Astrodon Tru-Balance LRGB E-Series Gen 2 LRGB filter set
Dates:Sept. 23, 2019
Frames: 207x600"
Integration: 34.5 hours
Avg. Moon age: 23.58 days
Avg. Moon phase: 35.03%
Astrometry.net job: 2939131
RA center: 22h 0' 24"
DEC center: +49° 1' 37"
Pixel scale: 1.774 arcsec/pixel
Orientation: 0.190 degrees
Field radius: 1.017 degrees
Resolution: 3300x2476
Data source: Backyard
Objekt: Drechsler Zirke 1
Ein neu entdeckter Nebel im Sternbild Schwan.
Entdecker: Marcel Drechsler, Sternwarte Bärenstein
Fotografie: Andreas Zirke
Die Natur dieses rätselhaften Objektes um den Stern relativ kühlen Stern HD 209204 ist ist zur Zeit noch unklar.
Die große Menge an OIII-Gas sowie die dramatische Form des Nebels mit zahlreichen Schlaufen und Bögen entziehen sich aktuell noch einer genaueren Definition.
Die Struktur weißt Eigenschaften eines planetarischen Nebels auf, zeigt allerdings auch Charakteristika die eine andere Entstehung vermuten lassen.
Als Ionisationsquellen für den Nebel kommen sowohl ein weißer Zwerg mit einer Oberflächentemperatur von 8868.67°K in Frage, als auch der zentrale Stern HD 209204 selbst. Es könnte sich bei diesem Stern möglicherweise um ein Binärsystem aus einem K0-Stern und einem weißen Zwerg handeln.
Gewissheit bringen weitere Analysen von HD 209204 als auch ein Spektrum der gesamten Struktur.
Durchmesser mit äußeren Schalen: ca. 40 Bogenminuten
Durchmesser Kern: ca. 10 Bogenminuten
Belichtungszeit
84x10 min H-alpha, 3nm
63x10 min OIII, 3nm
RGB je 20x10 Min
34,5h Gesamtbelichtung
_______
Object: Drechsler Zirke 1
A newly discovered nebula in the constellation Swan.
Discoverer: Marcel Drechsler, Observatory Bärenstein
Photography: Andreas Zirke
The nature of this mysterious object around the star HD 209204 is still unclear.
The large amount of OIII gas and the dramatic shape of the nebula, with numerous loops and arches, are currently beyond definition.
The structure shows characteristics of a planetary nebula, but also features that suggest a different origin.
The ionization sources for the nebula can be a white dwarf with a surface temperature of 8868.67°K as well as the central star HD 209204 itself. This star could possibly be a binary system consisting of a K0 star and a white dwarf.
Further analyses of HD 209204 as well as a spectrum of the entire structure bring certainty.
Diameter with outer shells: approx. 40 arc minutes
core diameter: approx. 10 arc minutes
exposure time
84x10 min H-alpha, 3nm
63x10 min OIII, 3nm
RGB each 20x10 min
34.5h total exposure
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