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Contains:  NGC 6883
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WR 134 Variable Wolf-Rayet, 


            Richard H
WR 134 Variable Wolf-Rayet

WR 134 Variable Wolf-Rayet

Technical card

Resolution: 4535x3393

Dates:Sept. 1, 2019Sept. 2, 2019

Frames: 231x180" (gain: 139.00) -15C bin 1x1

Integration: 11.6 hours

Avg. Moon age: 2.98 days

Avg. Moon phase: 10.04% job: 2908766

RA center: 302.560 degrees

DEC center: 36.173 degrees

Pixel scale: 0.822 arcsec/pixel

Orientation: 91.218 degrees

Field radius: 0.647 degrees

Locations: Bailey's observatory, Cottonwood, CA, United States

Data source: Backyard


A very faint and difficult target to image. At a magnitude of 8.08 WR 134 is a variable Wolf-Rayet star located around 6,000 light years away from Earth in the constellation of Cygnus, surrounded by a faint bubble nebula blown by the intense radiation and fast wind from the star - Wikipedia

Due to not-so-kind amp glow from the Panasonic sensor in the ASI 1600mm Pro cooled CCD camera that Flat frames would not work I only used bias calibrated dark frames to get rid of the amp glow with no need for flats. This camera is set at the factory with a fixed offset of 50.

bias frame master (300 frames) @ 0.2s ea to calibrate 50 dark frames G139 @180s ea

Sii Astronomik filter 78 frames G139 @ 180s ea
Ha Astrodon filter 81 frames G139 @ 180s ea
Oiii Astrodon filter 72 frames G139 @ 180s ea
Total integration time: 11.55 hours



Richard H
License: None (All rights reserved)

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WR 134 Variable Wolf-Rayet, 


            Richard H