(IAAC) Faintest naked-eye object?

[Michael Inglis]

Hi Sue,
Thanks for email.
I think just faintest to the naked eye is sufficient actually. If you
can see it, you can see it! Whether it is an extended object of high
integrated magnitude or just surface brightness, it will all depend on
so many conditions such as eye response, sky conditions etc.. By the
way, great work in S&T!!
Cheerios,
Mike


-----Original Message-----
From: netastrocatalog-announce-bounces at visualdeepsky.org
[mailto:netastrocatalog-announce-bounces at visualdeepsky.org] On Behalf Of
Sue French
Sent: Monday, October 13, 2008 1:10 PM
To: 'IAAC: Internet Amateur Astronomers Catalog of
VisualDeep-SkyObservations'
Subject: Re: (IAAC) Faintest naked-eye object?


Mike,

I suggest you post your query to the Yahoo group Amastro.  They will
want you to be more specific, though.  Faintest by total integrated
magnitude or surface brightness?  Of course, those figures are often
unknown for nebulae.

Clear skies,  Sue

-----Original Message-----
From: netastrocatalog-announce-bounces at visualdeepsky.org
[mailto:netastrocatalog-announce-bounces at visualdeepsky.org] On Behalf Of
Dr. Michael Inglis
Sent: Sunday, October 12, 2008 10:46 AM
To: netastrocatalog-announce at visualdeepsky.org
Subject: (IAAC) Faintest naked-eye object?

Hi everyone,
I am doing some background research for an article I am writing to be  
published [eventually] in a nation-wide astronomy magazine [both in  
USA and UK].

My question to you all is:
What is the faintest object you have observed using ONLY the naked- 
eye? [maybe holding a deep-sky or H-alpha/Beta filter to the eye].

My sources tell me that perhaps Barnard's Loop may hold the record  
here, or perhaps M81/82?

if you have observed such an object, would you let me know, including  
conditions locations etc., etc..

All replies will be answered and sources quoted in the article.

Best wishes and clear skies,
Mike

-------------------------
Dr Mike Inglis BSc MSc PhD FRAS
http://web.mac.com/mdiastro
http://www2.sunysuffolk.edu/inglism/index.html
-------------------------







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