Some I know, will prefer the more "blue" rendition below - but above, my FINAL rendition using "teal" colour for the OIII emission.
The old supernova remnant SNR G179.0+2.6 in the constellation Auriga is dominated by OIII emissions. They form a mixture of diffuse and filamentary structures that together form a round closed shell with a diameter of about 70 arcmin - about two full moons to our eyes. The OIII signal is actually quite weak - but the Ha is much weaker again.
Although I have invested a lot of time in the data capture – I would like much more time on this one for sure. Perhaps better imaged from a dark location rather than from my back yard – but therein lies the satisfaction in having this image at all!
Imaging telescope: Takahashi FSQ130ED
Imaging camera: ASI 2600MM
Mount: JTW Trident P75
Guiding telescope: Takahashi FS60CB
Guiding camera: QHY 5L II M
Focal Extender / Reducer: 0.73X
Software: Sequence Generator Pro SGP (for capture) PHD 2 (guiding), Astro Pixel Processor, PixInsight.
Filters: Astrodon Ha (3nm), Astrodon OIII (3nm), Astrodon RGB.
Accessories: Robofocus Focuser controlled by Lunatico Armadillo, ATIK EFW 3, RB Focus Gaius, RB Focus Excalibur.
Dates: 2nd Sept. - 28th Nov. 2025
Frames: (Total)
Astrodon Ha 88 x 600"
Astrodon OIII 283 x 600"
Astrodon RGB 3 x 114 x 60"
Total integration = 67 Hours 32 Mins
Centre (RA, Dec): (88.488, 31.120)
Centre (RA, hms): 05h 53m 57.141s
Centre (Dec, dms): +31° 07' 13.353"
Size: 2.31 x 1.63 deg
Radius: 1.416 deg
Pixel scale: 1.63 arcsec/pixel
"Orientation": Up is 54.1 degrees E of N
Although I have invested a lot of time in the data capture – I would like much more time on this one for sure. Perhaps better imaged from a dark location rather than from my back yard – but therein lies the satisfaction in having this image at all!
Imaging telescope: Takahashi FSQ130ED
Imaging camera: ASI 2600MM
Mount: JTW Trident P75
Guiding telescope: Takahashi FS60CB
Guiding camera: QHY 5L II M
Focal Extender / Reducer: 0.73X
Software: Sequence Generator Pro SGP (for capture) PHD 2 (guiding), Astro Pixel Processor, PixInsight.
Filters: Astrodon Ha (3nm), Astrodon OIII (3nm), Astrodon RGB.
Accessories: Robofocus Focuser controlled by Lunatico Armadillo, ATIK EFW 3, RB Focus Gaius, RB Focus Excalibur.
Dates: 2nd Sept. - 28th Nov. 2025
Frames: (Total)
Astrodon Ha 88 x 600"
Astrodon OIII 283 x 600"
Astrodon RGB 3 x 114 x 60"
Total integration = 67 Hours 32 Mins
Centre (RA, Dec): (88.488, 31.120)
Centre (RA, hms): 05h 53m 57.141s
Centre (Dec, dms): +31° 07' 13.353"
Size: 2.31 x 1.63 deg
Radius: 1.416 deg
Pixel scale: 1.63 arcsec/pixel
"Orientation": Up is 54.1 degrees E of N
Sky Maps & Finding Chart
Ha, OIII & RGB in the image:
Annotated Image
