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Old 01-10-2008, 05:57 PM
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ngcles
The Observologist

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Join Date: Dec 2006
Location: Billimari, NSW Central West
Posts: 1,664
Obs report 30/9

Hi §AB,

Thanks for your report -- an interesting read as always.

Interesting thoughts on M15 -v- NGC 362. Indeed NGC 362 is a wonderful object that if in the northern sky, we would never hear the end of! Down here, it is completely overshadowed by you-know-who. I've got to say though, I can't quite agree with your assessment.

I'd rate M15 as a slightly better object than NGC 362 only because it is a little brighter and seems a little better resolved. To my eyes using the 'scope, M15 is at least a couple of arc-mins bigger. But these things are always a matter of opinion, not fact!

The total magnitude of M15 is +6.2, the overall size is about 18 arc-mins, the brightest resolved stars (Vtip) are 12.6 and the Horizontal Branch stars (H-B) are at 15.9. Distance is 10.3Kpc.

The total magnitude of NGC 362 is 6.8, the overall size is 14 arc-mins, the Vtip magnitude is 12.7 and the H-B is 15.4. Distance is 8.5 Kpc.

The figures look awfully similar don't they? Maybe your "seeing" was a bit better to the south than to the north?

Interesting comment about the small dark bay near the centre of 47 Tucanae (NGC 104). I have seen it several times in 12 and 18" but usually when the seeing is good and always at magnifications x250 and above. I've also (once) seen in a 20" 'scope, a very small dark "cross" (+) over the dead centre of NGC 362 at high magnifications. Two other observers confirmed it at the same time.

A good read!

Best,

Les D
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