Click on above image for higher resolution.
Original rendition below - attempting to hold true to Teal colour for OIII data. Above is a less green (more blue) rendition with stars further reduced - which some will prefer.
SNR G181.1+9.5
The only information I can write about this SNR is an abstract from Astronomy & Astrophysics, Volume 597, January 2017 - Roland Kothes, Patricia Reich, Tyler J. Foster and Wolfgang Reich: "A new high-latitude supernova remnant (SNR), has been discovered, offering insight into the interface between the Galactic disk and halo. Observations at 1420 MHz and 4850 MHz confirm its nature as an SNR, with a circular shell morphology, a radius of 16 pc, and a distance of 1.5 kpc, placing it 250 pc above the Galactic plane. Models suggest it has an age of up to 16,000 years, a swept-up mass exceeding 300 solar masses. G181.1+9.5 shows all characteristics of a typical mature shell-type SNR, but its observed faintness is unusual and requires further study."
There are VERY few images of this Super Nova Remnant - so delighted to have captured this from my back-yard.
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: 25th Jan. - 25th Feb. 2025
Frames: (Total)
Astrodon Ha 240 x 600"
Astrodon OIII 150 x 600"
Astrodon RGB 3 x 60 x 60"
Total integration = 68 Hours.
Center (RA, Dec): (96.448, 32.507)
Center (RA, hms): 06h 25m 47.469s
Center (Dec, dms): +32° 30' 24.128"
Size: 1.77 x 2.36 deg
Radius: 1.474 deg
Pixel scale: 1.63 arcsec/pixel
"Orientation": Up is 93.8 degrees E of N
There are VERY few images of this Super Nova Remnant - so delighted to have captured this from my back-yard.
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: 25th Jan. - 25th Feb. 2025
Frames: (Total)
Astrodon Ha 240 x 600"
Astrodon OIII 150 x 600"
Astrodon RGB 3 x 60 x 60"
Total integration = 68 Hours.
Center (RA, Dec): (96.448, 32.507)
Center (RA, hms): 06h 25m 47.469s
Center (Dec, dms): +32° 30' 24.128"
Size: 1.77 x 2.36 deg
Radius: 1.474 deg
Pixel scale: 1.63 arcsec/pixel
"Orientation": Up is 93.8 degrees E of N
Sky Map & Finding Chart
Ha, OIII & RGB in the image: (Note....the final image is rotated 90° from these).
Annotated Image: (Click on Image for expanded view)
