Observation by Peter Goodhew FRAS: StDr 161
Uploaded by
Peter Goodhew FRAS
Observer
Peter Goodhew FRAS
Observed
2022 Jul 20 - 08:50
Uploaded
2023 Feb 21 - 08:55
Planetarium overlay
Constellation
Cygnus
Field centre
RA: 20h32m
Dec: +51°11'
Position angle: +0°32'
Field size
0°15' × 0°11'
Equipment
- APM TMB LZOS 152 Refractors
- Celestron C14 EdgeHD
- 10Micron GM2000 HPS mount
- QSI6120 CCD Cameras
- iOptron CEM120 mount
- ZWO ASI6200MM Pro
Exposure
76 hours 15 minutes HaOIIIRGB
Location
Fregenal de la Sierra, Spain
Target name
StDr 161
Title
StDr 161
About this image
A possible planetary nebula in the constellation Cygnus.
The very deep exposures show parallel filaments in [OIII] and H-alpha. According to Professor Quentin Parker, an astrophysicist at the University of Hong Kong, this object is interesting because it is possible that the particular stripe structure of this nebula is the result of the dispersion of Alfvén waves. An Alfvén wave in a plasma is a low-frequency oscillation of the ions and the magnetic field.
Faint radio signals are also potentially detectable, and the faint arc-like structure is possibly associated with the mid-infrared in the WISE space telescope images. A source in the ultraviolet also reveals a possible CSPN (Central Stars of Planetary Nebulae). It could be an ionised ISM, but the exact nature of this object is still unknown. A spectrum is needed to clarify this question.
Data acquisition: Sven Eklund and Peter Goodhew from our remote observatories in Spain
More information at https://www.imagingdeepspace.com/stdr-161-219114.html
Strottner-Drechsler 161
Discoverers: Xavier Strottner, Marcel Drechsler
Designation: StDr 161 / PN-G: 088.1+06.7
Coordinates: 20:33:22.73 +51:22:02.37 (J2000)
Constellation: Cygnus
Angular size: 10 x 5 arcminutes
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