Get Stellarvue's free monthly newsletter. Subscribe Today

SVX152T - Mul4

October 6, 2026 - Edward Harp

Edward Harp captured this brilliant shot of Mul4 (WR 134) in Cygnus with his SVX152T. This Wolf-Rayet star sits 6,000 light-years away from Earth and is surrounded by a faint bubble nebula, blown by the intense radiation and fast wind from the star itself. This object is 5 times the radius of the Sun and 400,000 times as luminous. The nebula surrounding it is a shell of hydrogen thought to have been swept up from the interstellar medium when one or both stars were on the main sequence.

Other Designations: V1769 Cygni, BD+35°4001, HD 191765, WR 134, HIP 99377, SAO 69541, Mul4

Details:

Telescope: Stellarvue SVX152T

Focuser: 3" Stellarvue

Field Flattener: Stellarvue SFFX-3

Imaging Cameras: ZWO ASI2600MM Pro

Mounts: Astro-Physics 1100GTO-AE

Filters:

Astronomik H-alpha CCD MaxFR 6nm 2"
Astronomik OIII CCD MaxFR 6nm 2"

Accessories:

Pegasus Astro Pocket Powerbox
ZWO EAF Auto-Focuser
ZWO EFW 7 x 2″ Filter Wheel

Software:

Adobe Photoshop
Open PHD Guiding Project PHD2
Pleiades Astrophoto PixInsight
Russell Croman Astrophotography BlurXTerminator
Russell Croman Astrophotography NoiseXTerminator
Stefan Berg Nighttime Imaging 'N' Astronomy (N.I.N.A. / NINA)

Guidescope: William Optics Redcat / Cat 51 III WIFD

Guiding Camera: ZWO ASI462MM

*For more details and an in-depth look at this image, visit Edward’s AstroBin.

This image was selected as AstroBin’s IOTD (image of the day) on 9/27/26.

References:

Salvatore Iovene - http://iovene.com/. (n.d.). Mul4. AstroBin. https://www.astrobin.com/x7jeuv/?from_user=107747&utm_source=astrobin&utm_medium=email&utm_campaign=notification&no-redirect

Wikipedia contributors. (2026, August 23). WR 134. Wikipedia. https://en.wikipedia.org/wiki/WR_134