Description: - A large
bright planetary nebula in the central region of the Milky Way
in Sagittarius. This item is really low on the horizon for
Northern locations reaching a heigh of less than 18 degrees at
most from the shooting location. Between its low altitude and a
combination of forest fire smoke and agricultural harvesting
dust also low in the sky I only managed a few decent sub
exposures of this item, tossing many others out. This also
impacted the amount of noise in the overall image.
Telescope: Astro-Physics AP92
telescope w 92FF giving 644mm focal length at f/7.
Camera: SBIG STT-8300M @ -35C
Exposure: 9 Red, 7 Green and 6
Blue sub exposures of 10 min each for 220 minutes total through
Baader RGB filters
Date: 2023-09-17 at 13C and
Location: a friend's private
acreage near Cayley, Alberta under Bortle 4 skies
Processed in PixInsight with NoiseXT and BlurXT, then
finished in Adobe Photoshop.