WR 134

Image Title: WR 134

Copyright: Dr. Arndt Wolkenhauer

Date image was taken: August 23, 2025

Location: Moringen, Germany

Data Acquisition Method: Personal Telescope Setup

Description and Details: In the constellation Cygnus, about 6,000 light-years from Earth, lies the remarkable star WR 134. It belongs to the rare class of so-called Wolf-Rayet stars. These stars are extremely massive, extremely hot, and are in the final stages of their life cycle.
WR 134 is roughly ten times the size of our Sun and has about 18 times its mass. Its tremendous energy output makes it a true powerhouse in space: it shines about 400,000 times brighter than the Sun.
The star ejects enormous amounts of matter into space. The resulting stellar winds reach speeds of several million kilometers per hour. When this material collides with the surrounding gas and dust clouds, it forms a luminous bubble that appears in long-exposure astrophotography in bluish (oxygen), reddish (hydrogen), and yellowish (sulfur) structures.

Total Integration: 30h
Ha: 167x300s (13h 55’) 09.-11.08.2025
OIII: 122x300s (10h 10’) 12.+16.08.2025
SII: 68x300s (5h 40’) 23.08.2025
L-RGB: 30x30s (15’) – 16.08.2025


FOV: 2.16° x 1.44°
Pixel scale: 0.63"/pixel
Dithering: 2 pixels every image
Gain: 100
Sensor temperature: 0°C
Recording: ZWO ASI 2600MM DUO / ZWO ASI 2600MC (Stars)
Filter: Baader UV/IR Cut 2‘‘, Baader Highspeed 2’’ Ha, Oiii, Sii
Optics: RASA 11’ V2 (mono) / TS Optics 76 EDPH (RGB)
Guiding: ASI 220, ASI 120 (ZWO OAG-L)
Mount: iOptron CEM 120 (mono) / Celestron AVX (RGB)
Control: ZWO ASIAIR Plus (mono) / ZWO ASIAIR MINI (RGB)
Software: PixInsight + Photoshop
Darks: 30
Flats: 20
Flat-Darks: 20

Name: Dr. Arndt Wolkenhauer

Email: arndt.wolkenhauer@gmx.de