M 93 (NGC 2477) Open Cluster in Puppis

Located at: RA 07 hours 44 minutes 30 seconds, Dec -23 degrees 51 minutes 12 seconds

Size: 22' (10') Magnitude: 6.2 Class: I 3 r

North is up

West to the right


Celestron 8 at ~f10


Miranda Laborec 35mm camera, manually guided, Kodak 103AF film, outside temp not recorded


No filter, 10 minutes, 01/20/1980


Acufine (diluted 4:3), 10.5 minutes @ 68F, 35mm negative scanned with Polaroid SprintScan 4000 (4000 dpi)

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


near Mt Allen, 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.

This image is a scan to file as a 2000 x 1867 pixel crop of the 35mm negative.

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

According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 10 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 2447
NGC 2447 = M93 = E493-SC7 = Cr 160
07 44 29 -23 51.2
V = 6.2;  Size 22

13.1": about 60 stars, bright, large, pretty rich.  Contains a tight 
quadrilateral near the center with three faint companions.

8": bright, very rich, triangular-shape, pretty compact, excellent field.

- by Steve Gottlieb