Michael A. Stecker
mastecker@gmail.com



 

 
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WR 134 in Cygnus using HOO-RGB palette

WR 134 in Cygnus using HOO-RGB palette
This cropped image of the WR134 region of Cygnus was jointly done by James Foster and Michael Stecker using a 10-inch f/4 Newtonian telescope and ZWO ASI6200MM-Pro monochrome camera in the HOO-RGB palette. WR 134 is a variable Wolf-Rayet star located about 6,000 light-years away. This star is bright and massive, having a radius five times greater than our own Sun, and 400,000 times more luminous. Surrounding the star is bubble-like nebula blown by the intense radiation and fast stellar wind from the star.
file: WR140Gain100-HOO2colorSTARS_reg-1fcrdsm.jpg
Click here for full resolution photo

Photographic Data
Date:
September-October, 2025

telescope:
Sky-Watcher Quattro 250P
(10-inch f/4 Newtonian telescope with coma corrector)
FL= 1,000 mm


mount:
iOptron Cem60
guiding off-axis


imaging cameras, filters & exposures:
ASI6200MM camera:
Hydrogen-alpha (3 nm): 168 min
Oxygen-III (3 nm): 561 min
All subs: 420 seconds

ZWO ASI2600MC-Pro color camera using HOO-RGB:Color only: 102 min exposure (100 sec subs)
ZWO ASI2600MC-Pro color camera with Optololong L-eXtreme nebular filter: 83 min exposure (160sec subs)

filters:
Hydrogen-alpha (3nm): 168 min , Oxygen-III (3nm): 561 min, and RGB from color camera

.photographic site:
James Foster observatory at Pinon Pines Estates (Frazier Park) California
(Bortle 4 at 5,500 ft elevstion)



WR 134 in Cygnus using Hubble Palette (SHO)

WR 134 in Cygnus using Hubble Palette (SHO)
Here is WR134 in Cygnus using the same equipment as above but with the Hubble Pallette filters -- SHO (Sulfur-II as red, Hydrogen-alpha as green and Oxygen-III as blue). Shot with a Skywatcher 10-inch f/4 Newtonian telescope with a ZWO ASI6200MM-Pro monochrome camera. Exposures were Sulfur-II: 210min, Hydrogen-alpha: 68min & Oxygen-III: 58min for a total exposure of just under 16-hours.
file: WR140Gain100-SHO3A-1cr1sm.jpg
Click here for full resolution photo

Photographic Data
Date:
September-October, 2025

telescope:
Sky-Watcher Quattro 250P
(10-inch f/4 Newtonian telescope with coma corrector)
FL= 1,000 mm


mount:
iOptron Cem60
guiding off-axis


imaging cameras, filters & exposures using Hubble Palettte (SHO):
ASI6200MM-Pro monochrome camera with filters --
Sulfur-II: 210 min (as red wit 420 sec subs)
Hydrogen-alpha: 168 min (as green with 420 sec subs)
Oxygen-III: 561 min (as blue with 420 sec subs)
and

RGB color data (for stars) from ASI2600MC-Pro color camera:
Color camera with no filter: 102min Exp (100 sec subs)
Color camera with Optolong L-eXtreme dual band nebular filter: 83 min Exp (160 sec subs)
Total expxosure time: 1,124 minutes or 18.73 hours

photographic site:
James Foster observatory at Pinon Pines Estates (Frazier Park) California
(Bortle 4 at 5,500 ft elevstion)