WR 134 is a Wolf-Rayet star in Cygnus which is around 6,000 light years distant. It shines at 400,000 times the luminosity of the sun. Intense radiation and stellar winds have created a bubble of gas around the star. In this image the bubble is seen in blue/green doubly ionized oxygen (OIII) light. A large amount of hydrogen (HII) emission is also displayed as the red areas. The star responsible for this is near the center of the bubble and is whiteish. The image was taken with my #Stellarvue SVX 152T refractor and #zwoasi 6200 camera through RGB and HII/OIII filters. The image combines a bit over 47 hours of exposure time. Automation was controlled with a #primalucelab Eagle 4 pro and Voyager Astrophotography Automation software. The image is cropped and rotated for a pleasing view.

COPYRIGHT: Jon Talbot

This colorful shot covers a field of view about the size of the full Moon within the boundaries of the constellation Cygnus. It highlights the bright edge of a ring-like nebula traced by the glow of ionized hydrogen and oxygen gas. Embedded in the region's interstellar clouds of gas and dust, the complex, glowing arcs are sections of bubbles or shells of material swept up by the wind from Wolf-Rayet star WR 134, brightest star near the center of the frame. Distance estimates put WR 134 about 6,000 light-years away. Shedding their outer envelopes in powerful stellar winds, massive Wolf-Rayet stars have burned through their nuclear fuel at a prodigious rate and end this final phase of massive star evolution in a spectacular supernova explosion. The stellar winds and final supernovae enrich the interstellar material with heavy elements to be incorporated in future generations of stars.
Tech card:
Imaging telescope: Explore Scientific 127mm ED TRIPLET APO.
Imaging camera: ZWO ASI1600MM Pro-Cool.
Mount: iOptron CEM60.
Guiding camera: ZWO ASI290MM mini.
Focal reducer: Explore Scientific 0.7 Reducer/Flattener.
Accessory: ZWO EAF Electronic Auto Focuser · ZWO ASIAIR Pro · ZWO OAG · ZWO 8x 1.25" Filter Wheel (EFW).
Frames:
Chroma 3nm Ha: 10x600" (gain: 200.00) -20C bin 1x1.
Chroma 3nm OIII: 22x600" (gain: 200.00) -20C bin 1x1.
Total integration: 5.3 hours.
Darks: ~30.
Flats: ~30.
Flat darks: ~60.
Avg. Moon age: 18.13 days.
Avg. Moon phase: 87.56%
Bortle Dark-Sky Scale: 4.00.
Temperature: 20.00.
Pixel scale: 1.159 arcsec/pixel.
Imaging location: Abu Dhabi desert, UAE.
A re-process of my data of Dec. 3 and 4, 2020.
I tried to boost the OIII channel and tried to pull out some more details.

Copyright: Wissam Ayoub

EQUIPMENT DATA:
Telescope: Borg 101ED f/4
Mount: Skywatcher HEQ5 (Rowan Belt Mod)
Camera: QHYCCD 163M
Filters: Optolong HORGB + IDAS LPS-P2 + WO VR1
Guide Scope: DIY Guidescope 43mm f/3
Guide Camera: QHY 5R-II

ADQUISITION DATA:
Location: Castillo de Villamalefa & Barcelona
Date: Summer 2019
Resolution: 1.87″/pixel
Guiding Performance: 1” RMS (average)
Exposures: (Gain 174 / Offset 77 / Bin 1×1)
H: 7.5h (91x300s)
O: 26.5h (319x300s)
R: 2.5h (81x120s)
G: 2.5h ( 81x120s )
B: 2h ( 66x120s )
Sensor Temperature: -10C
50 Flats (From Library)
50 Darks (From Library)
No Bias

Total Integration Time: 41h

Copyright: Alberto Ibañez