[ngcles]

Hi Glen

I have one observation of NGC 4147 made 13 years ago at Mudgee with 25cm:

x86 34' TF. x138 21' TF Mag 10.2 Size 3.9'. Quite a small cluster of moderately low central condensation class, in the SW outer halo is a mag 13.5 *. With A.V it seems grannulated slightly and there seems the odd sparkly point in the outer halo, 2' diameter with broad moderate concentration to the centre.

Have always been intruiged that there are 3 GCs so close to the Northern Galactic pole. Here is my note using 46cm of M53:

x139 35' TF
x185 27' TF

M 53 NGC 5024 Globular Cluster *
RA: 13h 12m 55.3s Dec: +18° 10' 09"
Mag: 7.7 Mag V(tip): 13.8 Mag V(HB): 16.9 B-V (tip): ---
Size: 13.0' Class: R.V.: --- Source: Archinal *

This is a very nice GC that is reasonably resolved -- in better seeing more resolution would be apparent I'm sure. A bit better with the 12mm TII. The whole object is probably 10-11' diameter, round rising strongly and broadly to centre est cc 6, without zones, The central blaze is probably 3-3.5' diameter. Most of the resolved stars are in the outliers, the brightest at about mag 13.5, with at least 50 if not 100 stars visible. A very attractive cluster.


Best,

Les D