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Old 14-09-2008, 12:49 AM
Crusader
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Crusader is offline
 
Join Date: Aug 2008
Location: South Africa
Posts: 100
NGC 4755 (Jewel Box) description for log

Hi guys

I'm starting out on creating a detailed observing log with the aim of perhaps submitting it to the Astronomical Society of SA in order to get Observation Merit Certificates (for each 20 objects you observe you apparently get a certificate).

I have'nt done a detailed observation log before (aside from just listing the objects observed), so I'm not sure what details to include or whether I'm doing it right.

Can you guys perhaps take a look at my observation of NGC 4755 and provide me with tips on how to make it more complete/correct/useful?

Quote:
The Jewel Box (NGC 4755) is very easy to locate to the SE of Becrux. The cluster as a whole is bright and easy to locate in the finder scope (5° FOV).

It is a small open cluster with irregular shape containing stars of varying brightness (mag 5.7 for brightest to mag 10 for fainter stars. Stars are well resolved.

Using the 10mm EP, 9 bright stars can be easily seen. With the 3 brightest forming a triangular shape pointing to the west. A very prominent orange coloured star is visible close to the centre of the triangular shape at the end of a row containing 2 other stars. These 3 stars form a row facing NE to SE. Lots of fainter stars are visible in the surrounding area.

Approximately 40 stars can be easily counted. Size of the cluster appears to be around 10 arcminutes.
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