WR 134 in Cygnus
Above image awarded APODGrAG image of the day on 11July2022
A crop (and adjustment) from the above:
An interesting comparison. Because of the colours I guess (and perhaps also due to OIII being in two channels)......The HOO version on the left, (rather than the HSHO image on the right), better shows the details we are after in imaging this target.
An interesting look into some of the data and what it is "telling" us:
This is from an HOO rendition, with the stars removed
Below is the final HOO version: Click on image to enlarge.
WR 134 is a variable Wolf-Rayet star located around 6000 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. It is five times the radius of the sun, but due to a temperature over 63,000 K it is 400,000 times as luminous as the Sun.
WR 134 was one of three stars in Cygnus observed in 1867 to have unusual spectra consisting of intense emission lines rather than the more normal continuum and absorption lines. These were the first members of the class of stars that came to be called Wolf-Rayet stars (WR stars) after Charles Wolf and Georges Rayet who discovered their unusual appearance. It is a member of the nitrogen sequence of WR stars, while the other two (WR 135 and WR 137) are both members of the carbon sequence that also have OB companions.
(There is an interesting external page with information on WR134 HERE)
Imaging telescope: Takahashi FSQ130ED
Imaging camera: ASI 2600MM
Mount: Takahashi EM 400 Temma 2M
Guiding telescope: Takahashi FS60CB
Guiding camera: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Capture Software: Sequence Generator Pro, PHD 2
Processing Software: Astro Pixel Processor, PixInsight, Topaz DeNoise, Photoshop
Filters (50mm): Astrodon Ha (3nm), Astrodon SII (3nm) & Astrodon OIII (3nm)
Accessories: SeleTEK2 controlling Robofocus Focuser, ATIK EFW3
Original Image : 6240 x 4160
This Image (Max) : 3000 x 2000
Dates: 26th May - 27th May 2022
Frames:
Astrodon Ha 18 x 10'
Astrodon SII 15 x 10'
Astrodon OIII 28 x 10'
Total integration = 10 Hours 10 Mins
Center (RA, Dec): (302.284, 36.201)
Center (RA, hms): 20h 09m 08.113s
Center (Dec, dms): +36° 12' 05.166"
Size: 2.07 x 1.38 deg
Radius: 1.245 deg
Pixel scale: 1.2 arcsec/pixel
Orientation: Up is 271 degrees E of N
WR 134 was one of three stars in Cygnus observed in 1867 to have unusual spectra consisting of intense emission lines rather than the more normal continuum and absorption lines. These were the first members of the class of stars that came to be called Wolf-Rayet stars (WR stars) after Charles Wolf and Georges Rayet who discovered their unusual appearance. It is a member of the nitrogen sequence of WR stars, while the other two (WR 135 and WR 137) are both members of the carbon sequence that also have OB companions.
(There is an interesting external page with information on WR134 HERE)
Imaging telescope: Takahashi FSQ130ED
Imaging camera: ASI 2600MM
Mount: Takahashi EM 400 Temma 2M
Guiding telescope: Takahashi FS60CB
Guiding camera: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Capture Software: Sequence Generator Pro, PHD 2
Processing Software: Astro Pixel Processor, PixInsight, Topaz DeNoise, Photoshop
Filters (50mm): Astrodon Ha (3nm), Astrodon SII (3nm) & Astrodon OIII (3nm)
Accessories: SeleTEK2 controlling Robofocus Focuser, ATIK EFW3
Original Image : 6240 x 4160
This Image (Max) : 3000 x 2000
Dates: 26th May - 27th May 2022
Frames:
Astrodon Ha 18 x 10'
Astrodon SII 15 x 10'
Astrodon OIII 28 x 10'
Total integration = 10 Hours 10 Mins
Center (RA, Dec): (302.284, 36.201)
Center (RA, hms): 20h 09m 08.113s
Center (Dec, dms): +36° 12' 05.166"
Size: 2.07 x 1.38 deg
Radius: 1.245 deg
Pixel scale: 1.2 arcsec/pixel
Orientation: Up is 271 degrees E of N
SII, Ha & OIII in the final image
Sky Map & Finder Chart
Annotated Image (Click to enlarge)
