M 54 (NGC 6715, GCL 104) Globular Cluster in Sagittarius

Located at: RA 18 hours 55 minutes 03 seconds, Dec -30 degrees 28 minutes 42 seconds

Size: 12' Magnitude: 7.7 Class: 3

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector stopped to f6 (12")

Camera:

Miranda Laborec 35mm camera, ST4 guided, hypered Kodak Technical Pan 2415 film, 39 F outside temp

Image:

No filter, 70 minutes, 06/11/2002

Processing:

D-19, 7.0 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 6715
NGC 6715 = M54 = E458-SC8
18 55 03.2 -30 28 43
V = 7.7;  Size 9.1

17.5": very bright, increases to a sharp bright core, fairly large.  Five 
brighter stars easily visible around the edges are probably field stars.  The 
cluster has a mottled, grainy appearance but there was no additional resolution.  
Visible in 16x80 finder.  Brightest members only V = 15.5.

- by Steve Gottlieb