Above image awarded APODGrAG on Dec. 7th (2021)
Above image awarded AAPOD2 on Nov. 10th (2021)
Slight colour adjustment and image flip (Oct.'22):
Sh2-261 is also known as LBN 863, SIM 34 or Lower’s Nebula.
Lower's nebula (Sh2-261) is found on the outermost edge of our Milkyway between the Orion and Perseus arm. Sh2-261 is a large faint region of predominantly ionized hydrogen. The nebula is named after Harold and Charles Lower who discovered this nebula in 1939.
Embedded within Sh2-261 is LBN 862 and LBN 864. Also there are several dark nebulae in this field.
Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: QSI 6120i
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: Tak QE 0.73x
Software: PHD 2, Pleiades Astrophoto PixInsight , Astro Pixel Processor (for stacking), Sequence Generator Pro SGP (for capture)
Filters: Astrodon Ha, SII, OIII,
Accessories: Robofocus Focuser, ATIK EFW3
Original Resolution: 3600x 2400
Dates: 3rd Nov - 8th Nov '21
Astrodon Ha 18 x 20'
Astrodon SII 24 x 20'
Astrodon OIII 30 x 20'
Total Time: 24 Hours
Center (RA, Dec): (92.351, 15.689)
Center (RA, hms): 06h 09m 24.153s
Center (Dec, dms): +15° 41' 18.668"
Size: 80.7 x 53.8 arcmin
Radius: 0.808 deg
Pixel scale: 1.34 arcsec/pixel
Orientation: Up is 180 degrees E of N
SII, Ha & OIII within the image: