NGC 6995 & IC 1340
The above is a crop from this one showing the Eastern section of the Veil Nebula:
Eastern Veil Nebula
The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus.
It constitutes the visible portions of the Cygnus Loop, a supernova remnant, many portions of which have acquired their own individual names and catalogue identifiers. The source supernova was a star 20 times more massive than the Sun which exploded between 10,000 and 20,000 years ago. At the time of explosion, the supernova would have appeared brighter than Venus in the sky, and visible in daytime. The remnants have since expanded to cover an area of the sky roughly 3 degrees in diameter (about 6 times the diameter, and 36 times the area, of the full Moon). While previous distance estimates have ranged from 1200 to 5800 light-years, a recent determination of 2400 light-years is based on direct astrometric measurements. (The distance estimates affect also the estimates of size and age.)
Imaging telescope: Takahashi FSQ106ED
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 OIII (3nm)
Accessories: ATIK EFW3, SeleTEK2 controlling Robofocus Focuser.
Original Image : 4500 x 3000
This Image (Max) : 3600 x 2400
Dates: 20th Aug 2022
Frames:
Astrodon Ha 24 x 10'
Astrodon OIII 18 x 10'
Total integration = 7 Hours
Center (RA, Dec): (313.964, 31.336)
Center (RA, hms): 20h 55m 51.317s
Center (Dec, dms): +31° 20' 09.497"
Size: 1.83 x 1.22 deg
Radius: 1.098 deg
Pixel scale: 1.46 arcsec/pixel
Orientation: Up is 270 degrees E of N
It constitutes the visible portions of the Cygnus Loop, a supernova remnant, many portions of which have acquired their own individual names and catalogue identifiers. The source supernova was a star 20 times more massive than the Sun which exploded between 10,000 and 20,000 years ago. At the time of explosion, the supernova would have appeared brighter than Venus in the sky, and visible in daytime. The remnants have since expanded to cover an area of the sky roughly 3 degrees in diameter (about 6 times the diameter, and 36 times the area, of the full Moon). While previous distance estimates have ranged from 1200 to 5800 light-years, a recent determination of 2400 light-years is based on direct astrometric measurements. (The distance estimates affect also the estimates of size and age.)
Imaging telescope: Takahashi FSQ106ED
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 OIII (3nm)
Accessories: ATIK EFW3, SeleTEK2 controlling Robofocus Focuser.
Original Image : 4500 x 3000
This Image (Max) : 3600 x 2400
Dates: 20th Aug 2022
Frames:
Astrodon Ha 24 x 10'
Astrodon OIII 18 x 10'
Total integration = 7 Hours
Center (RA, Dec): (313.964, 31.336)
Center (RA, hms): 20h 55m 51.317s
Center (Dec, dms): +31° 20' 09.497"
Size: 1.83 x 1.22 deg
Radius: 1.098 deg
Pixel scale: 1.46 arcsec/pixel
Orientation: Up is 270 degrees E of N
Sky Map & Finder Chart
Ha & OIII in the image
Annotated Image - click on image to enlarge.
