Andromeda Galaxy
The Andromeda Galaxy also known as Messier 31, M31, or NGC 224 and originally the Andromeda Nebula, is a barred spiral galaxy with diameter of about 46.56 kiloparsecs (152,000 light-years) approximately 2.5 million light-years (765 kiloparsecs) from Earth and the nearest large galaxy to the Milky Way. The galaxy's name stems from the area of Earth's sky in which it appears, the constellation of Andromeda, which itself is named after the princess who was the wife of Perseus in Greek mythology.
The virial mass of the Andromeda Galaxy is of the same order of magnitude as that of the Milky Way, at 1 trillion solar masses (2.0×1042 kilograms). The mass of either galaxy is difficult to estimate with any accuracy, but it was long thought that the Andromeda Galaxy is more massive than the Milky Way by a margin of some 25% to 50%. This has been called into question by a 2018 study that cited a lower estimate on the mass of the Andromeda Galaxy, combined with preliminary reports on a 2019 study estimating a higher mass of the Milky Way. The Andromeda Galaxy has a diameter of about 46.56 kpc (152,000 ly), making it the largest member of the Local Group in terms of extension.
The Milky Way and Andromeda galaxies are expected to collide in around 4–5 billion years, merging to potentially form a giant elliptical galaxy or a large lenticular galaxy. With an apparent magnitude of 3.4, the Andromeda Galaxy is among the brightest of the Messier objects, and is visible to the naked eye from Earth on moonless nights, even when viewed from areas with moderate light pollution.
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 RGB
Accessories: ATIK EFW3, SeleTEK2 controlling Robofocus Focuser.
Original Image : 5400 x 3600
This Image (Max) : 3000 x 2000
Dates: 15th - 17th Oct 2022
Frames:
Astrodon Ha 18 x 10'
Astrodon RGB 3 x 210 x various (5sec, 30sec & 60sec)
Total integration = 6 Hours 30 minutes
Center (RA, Dec): (10.698, 41.299)
Center (RA, hms): 00h 42m 47.517s
Center (Dec, dms): +41° 17' 55.815"
Size: 2.19 x 1.46 deg
Radius: 1.319 deg
Pixel scale: 1.46 arcsec/pixel
Orientation: Up is 254.6 degrees E of N
The virial mass of the Andromeda Galaxy is of the same order of magnitude as that of the Milky Way, at 1 trillion solar masses (2.0×1042 kilograms). The mass of either galaxy is difficult to estimate with any accuracy, but it was long thought that the Andromeda Galaxy is more massive than the Milky Way by a margin of some 25% to 50%. This has been called into question by a 2018 study that cited a lower estimate on the mass of the Andromeda Galaxy, combined with preliminary reports on a 2019 study estimating a higher mass of the Milky Way. The Andromeda Galaxy has a diameter of about 46.56 kpc (152,000 ly), making it the largest member of the Local Group in terms of extension.
The Milky Way and Andromeda galaxies are expected to collide in around 4–5 billion years, merging to potentially form a giant elliptical galaxy or a large lenticular galaxy. With an apparent magnitude of 3.4, the Andromeda Galaxy is among the brightest of the Messier objects, and is visible to the naked eye from Earth on moonless nights, even when viewed from areas with moderate light pollution.
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 RGB
Accessories: ATIK EFW3, SeleTEK2 controlling Robofocus Focuser.
Original Image : 5400 x 3600
This Image (Max) : 3000 x 2000
Dates: 15th - 17th Oct 2022
Frames:
Astrodon Ha 18 x 10'
Astrodon RGB 3 x 210 x various (5sec, 30sec & 60sec)
Total integration = 6 Hours 30 minutes
Center (RA, Dec): (10.698, 41.299)
Center (RA, hms): 00h 42m 47.517s
Center (Dec, dms): +41° 17' 55.815"
Size: 2.19 x 1.46 deg
Radius: 1.319 deg
Pixel scale: 1.46 arcsec/pixel
Orientation: Up is 254.6 degrees E of N
Sky Map
