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Old 19-08-2006, 09:56 AM
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glenc (Glen)

glenc is offline
Join Date: Jun 2005
Location: Terranora
Posts: 4,133
Planetary nebulae brightness

I looked at 28 PN last night with an 8" Meade LX90 SCT at 205x.
This was part of a guided tour of 50 PN. The rest were not up.
The Meade had them all in the high power field but not usually in the middle. No filter was used.
The aim was to rank them by surface brightness.
The results were:

Very bright (NGC numbers)
7009 6826 3918 7027 6572

M27 6302 M57 IC4406 6818 5882 6210 6891

Moderately bright
7293 (at 77x)
5189 6445 6563 6153 6751 6309

6781 4361 6905 3699 6072 6369

Very faint
IC5150 3195 (Caldwell 109)

Have you seen these planetary nebulae?
Do you agree with these brightness estimates?

The magnitudes do not give that order but that is how it seemed.
However it is hard to be consistent with estimates when the altitude and sky glow vary.

Last edited by glenc; 24-08-2006 at 08:57 AM.
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