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Re: (IAAC) Obj: M33 - Inst: 20" f/4.3 dob, also naked eye



On Thursday, November 15, 2001, at 09:16 AM, Apache User wrote:
>
> In a 20" at 150x, M33 showed a hint of spiral structure, especially the 
> northern arm. The big H-II region (NGC604) looked like a separate 
> galaxy. This is a big, dim galaxy. In my 10", the first time that I 
> looked for it, I passed over it several times before I realized that I 
> was actually looking at it! This is reported to be an object that if 
> you can't see it in binoculars, you won't be able to see it in a 
> telescope regardless of the aperture. I don't know if this is exactly 
> true, but given it's minimal surface brightness, any significant light 
> pollution will wash it out.
>
>
I do not think that this is true. I have not seen it in binos (10x50) 
but I have seen it (barely) in a 6" Dob as well as my 8" SCT. Best skies 
I have around here are mag 4 to 4.5 and M33 is a very difficult object 
for me. It is so much fainter than M31 that it simply amazes me that 
anyone could even think about making this naked eye, let alone actually 
seeing it unaided. But maybe if I had darker skies  . . .
William Schart
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