M 83 (NGC 5236) Galaxy in Hydra

Located at: RA 13 hours 37 minutes 00 seconds, Dec -29 degrees 52 minutes 04 seconds

Size: 12.8' x 11.4' Magnitude: 8.2 blue Class: SAB(s)c HII

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

Miranda Laborec 35mm camera, ST4 guided, hypered Kodak Technical Pan 2415 film, 37 F outside temp

Image:

No filter, 75 minutes, 05/22/1993

Processing:

D-19, 6.0 minutes @ 68F, 35mm negative scanned with Polaroid SprintScan 4000 (4000 dpi)

Scan is a crop from 35mm negative, scan processed in Photoshop CS5.1

Location:

(near) Mt Pinos, CA

Notes: This is one of the Messier objects not currently 'visible' from my Thousand Oaks observatory ... In an effort to 'fill in' my Messier images page, I will post what film images I have. My film scanner is not presently hooked up, so I am using scans made for my old film website from the early 2000's.

Most of the film scans from the 14.5" f5 Newtonian reflector were centered on the object of interest, and were generally scanned to file as a 2000 x 2000 pixel crop of the 35mm negative.

Reduced in Photoshop to 1600 pixels, and saved under "Save for Web & Devices".

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 5236
NGC 5236 = M83 = E444-081 = MCG -05-32-050 = UGCA 366 = PGC 48082
13 37 00.3 -29 51 58
V = 07.5;  Size 12.9x11.5;  Surf Br = 12.8

18" (7/11/05 - Magellan Observatory, Australia): in addition to the  
complex 3-armed spiral structure I was surprised to see a fairly  
obvious linear bar that extended through the small, intense core in  
SW-NE orientation.  The fairly tightly wound spiral arm that wraps  
from the east side of the core around the south side in a counter- 
clockwise orientation clearly emerges from the NE end of this bar.   
The spiral arms that begin on the south and west side more vaguely  
begin in the general glow near SW end of the bar.

13.1" (2/20/04 - Costa Rica): beautiful view with easy spiral  
structure in excellent seeing conditions.  The main central portion  
of the galaxy appears to be in motion, due to the embedded spiral  
structure and darker ribbons add to this impression.  The three  
principal arms extending from the galaxy were well seen although they  
are fairly tightly wound to the main body.

13.1" (2/19/04 - Costa Rica): this impressive galaxy was viewed  
carefully at both 105x and 166x.  The overall size including the  
spiral arms are ~8'x6'.  The halo is broadly concentrated then rises  
sharply to an intense 25" core that increases to the center.  Complex  
spiral structure is quite obvious.  A spiral arm is attached on the  
east side of the core and wraps around the south side of the galaxy  
in a counter-clockwise direction.  A second arm is attached at the  
south side of the core and winds to the west a bit on the south  side.  
FInally, an arm is attached on the west side and shoots north  
before gently bending east along the north side of the outer halo.

12" (6/29/02 - Bargo, Australia): this was my best view of M83 with a  
beautiful spiral structure clearly evident with multiple knotty  
arms.  Well concentrated with a prominent core and very small  
nucleus.  A very long, spiral arm is attached on the west side of the  
central core or bar but quickly bends to the north, becoming more  
spread out and diffuse.  It continues to wind along the entire east  
side of the halo and fades out near a close double star which is the  
middle of three collinear stars to the SE of the galaxy.  Two other  
principal arms are visible - one is attached on the following end of  
the core and heads south, wrapping clockwise around the core towards  
the west.  A third arm emerges from the core on the west side and  
winds clockwise towards the north.  Offshoots of the main arms are  
difficult to trace and contribute to the general background glow of  
the halo.

13": very bright, large, very bright core, brighter along the central  
"bar".  The shape of the spiral arms and central bar form the Greek  
letter "Theta" surrounded by a faint halo.

17.5": brighter arm or arc visible north of the core.

8": very bright, bright core, elongated, impressive.

- by Steve Gottlieb
Historical Research Notes / Correction for NGC 5236
NGC 5236 = M 83.  See NGC 6634. - Dr. Harold G. Corwin, Jr.