M 75 (NGC 6864, GCL 116) Globular Cluster in Sagittarius

Located at: RA 20 hours 06 minutes 05 seconds, Dec -21 degrees 55 minutes 17 seconds

Size: 6.8' Magnitude: 8.6 Class: 1

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

  ST-8XME, self-guided, binned 1x1, temp -15c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 250 minutes  (25 x 10 minute subs), 10/9/10/2014; seeing 2.6-4.0 FWHM per CCDStack

Processing:

CCDStack 2.83.5392.25518, Photoshop CS5.1

Location:

 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)

Notes:

Just able to clear the tree to my south (now that the Palm tree is gone) for this image ... see the film version.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 6864
NGC 6864 = M75 = E595-SC13
20 06 04.7 -21 55 16
V = 8.6;  Size 6.0

17.5" (7/14/93): bright, moderately large, 3' diameter, round, very bright 
striking core 30" diameter, very mottled.  Several extremely faint 15th mag 
stars pop in and out of view with averted vision in outer halo.  A mag 14 star 
is in the inner region just NE of core.  The cluster almost reaches four mag 
12.5-13 stars which cradle the globular on the south and NE sides and a fainter 
star is off the NW side.

- by Steve Gottlieb