Arp 120 Copeland's Eyes


Gregg Ruppel
 

Hi all:

Leland Copeland was a frequent contributor to Sky and Telescope in the 1940s-1950s; in a 1955 article he called the galaxy pair NGC 4438 and 4435 "The Eyes".  Arp included the pair in his Atlas of Peculiar Galaxies as #120 "elliptical close to and perturbing spirals".  There has been some debate as to whether NGC 4435 is perturbing NGC 4438, but recent evidence suggests that both 4435 and M86 (in the center of this image) are involved.  The "Eyes" are on the left side of the image while M86 and M84 dominate the center and right, respectively:

http://www.greggsastronomy.com/IMAGES/arp120-LRGB.jpg

1.3X crop of Arp 120:
http://www.greggsastronomy.com/IMAGES/Arp120-LRGBcrop.jpg

LRGB, 9.3 hours total exposure from Dark Sky New Mexico.

--
Clear skies,

Gregg
Visit my astronomy & astrophotography site
http://www.greggsastronomy.com/


MJ Post
 

Wow! That a beautiful and amazing collection of galaxies.

MJ

On 04/13/2021 12:50 PM Gregg Ruppel <ruppel0709@gmail.com> wrote:


Hi all:

Leland Copeland was a frequent contributor to Sky and Telescope in the
1940s-1950s; in a 1955 article he called the galaxy pair NGC 4438 and
4435 "The Eyes".  Arp included the pair in his Atlas of Peculiar
Galaxies as #120 "elliptical close to and perturbing spirals".  There
has been some debate as to whether NGC 4435 is perturbing NGC 4438, but
recent evidence suggests that both 4435 and M86 (in the center of this
image) are involved.  The "Eyes" are on the left side of the image while
M86 and M84 dominate the center and right, respectively:

http://www.greggsastronomy.com/IMAGES/arp120-LRGB.jpg

1.3X crop of Arp 120:
http://www.greggsastronomy.com/IMAGES/Arp120-LRGBcrop.jpg

LRGB, 9.3 hours total exposure from Dark Sky New Mexico.

--
Clear skies,

Gregg
Visit my astronomy & astrophotography site
http://www.greggsastronomy.com/