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Tony Flanders
Carpal Tunnel


Reged: 05/18/06
Posts: 2202
Loc: Cambridge, MA, USA
Re: Ground Truth for the Bortle Scale
      07/01/08 05:40 AM

Quote:

Have never seen M33 directly anywhere ...




I think this is one of the places where Bortle's criteria need fixing. I'm quite sure I can't see M33 with direct vision, and I'm pretty sure that there are very, very few people who can. And I don't think light pollution is the obstacle; the problem is simply this object's inherent faintness.

But I wouldn't say that M33 is just "suspected" for me either. Even under fairly bright skies, I can sorta vaguely see something, and every time I sight on it through my Telrad, lo and behold, there's M33 sitting in the center of my eyepiece. I would think it might be an illusion composed of a bunch of faintish stars, but there are no stars in that vicinity which could produce such an illusion.

--------------------
Tony Flanders

eyeglasses
6x15 and 8x32 monoculars
8x25, 7x35, 10x30 IS, 10x50, and 15x70 binoculars
70mm and 100mm achromatic refractors
4.5", 7", and 12.5" Dobs

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Entire thread
Subject Posted by Posted on
* Ground Truth for the Bortle Scale Tony Flanders 06/06/08 06:46 AM
. * Re: Ground Truth for the Bortle Scale Tony Flanders   07/09/08 09:15 PM
. * Re: Ground Truth for the Bortle Scale MikeRatcliff   07/11/08 06:51 PM
. * Re: Ground Truth for the Bortle Scale George N   07/11/08 05:33 PM
. * Re: Ground Truth for the Bortle Scale csa/montanaModerator   06/06/08 11:55 AM
. * Re: Ground Truth for the Bortle Scale Thomas Pfleger   12/12/08 08:28 AM
. * Re: Ground Truth for the Bortle Scale Mauro Da Lio   01/05/09 11:52 AM
. * Re: Ground Truth for the Bortle Scale Tony Flanders   06/09/08 05:42 AM
. * Re: Ground Truth for the Bortle Scale MikeRatcliff   06/30/08 04:45 PM
. * Re: Ground Truth for the Bortle Scale Tony Flanders   07/01/08 05:40 AM
. * Re: Ground Truth for the Bortle Scale MikeRatcliff   08/07/08 07:30 PM
. * Re: Ground Truth for the Bortle Scale Mauro Da Lio   08/12/08 04:42 PM
. * Re: Ground Truth for the Bortle Scale George N   08/19/08 09:49 PM
. * Re: Ground Truth for the Bortle Scale s58y   08/14/08 03:16 PM
. * Re: Ground Truth for the Bortle Scale George N   08/19/08 09:42 PM
. * Re: Ground Truth for the Bortle Scale s58y   08/20/08 12:14 AM
. * Re: Ground Truth for the Bortle Scale George N   08/22/08 11:53 AM
. * Re: Ground Truth for the Bortle Scale Mauro Da Lio   08/22/08 05:59 PM
. * Re: Ground Truth for the Bortle Scale George N   08/25/08 12:00 AM
. * Re: Ground Truth for the Bortle Scale Mauro Da Lio   08/30/08 07:11 AM
. * Re: Ground Truth for the Bortle Scale s58y   08/23/08 11:50 PM
. * Re: Ground Truth for the Bortle Scale mbares   09/01/08 02:06 PM
. * Re: Ground Truth for the Bortle Scale s58y   09/01/08 03:32 PM
. * Re: Ground Truth for the Bortle Scale George N   09/15/08 10:13 PM
. * Re: Ground Truth for the Bortle Scale George N   08/24/08 11:49 PM
. * Re: Ground Truth for the Bortle Scale Mauro Da Lio   08/14/08 04:21 PM
. * Re: Ground Truth for the Bortle Scale Mauro Da Lio   08/17/08 03:55 PM
. * Re: Ground Truth for the Bortle Scale George N   07/08/08 10:10 PM
. * Re: Ground Truth for the Bortle Scale Tony Flanders   07/09/08 06:01 AM
. * Re: Ground Truth for the Bortle Scale John Fitzgerald   07/08/08 10:39 PM
. * Re: Ground Truth for the Bortle Scale Tony Flanders   07/09/08 08:36 AM
. * Re: Ground Truth for the Bortle Scale John Fitzgerald   07/14/08 06:41 PM
. * Re: Ground Truth for the Bortle Scale George N   07/13/08 10:34 AM
. * Re: Ground Truth for the Bortle Scale Tony Flanders   07/14/08 04:16 PM
. * Re: Ground Truth for the Bortle Scale MikeRatcliff   07/14/08 08:58 PM
. * Re: Ground Truth for the Bortle Scale FirstSight   06/30/08 10:58 PM
. * Re: Ground Truth for the Bortle Scale Tony Flanders   07/01/08 05:43 AM
. * Re: Ground Truth for the Bortle Scale Dave Mitsky   07/01/08 08:52 AM
. * Re: Ground Truth for the Bortle Scale John Fitzgerald   07/02/08 11:47 PM
. * Re: Ground Truth for the Bortle Scale s58y   06/09/08 09:14 AM
. * Re: Ground Truth for the Bortle Scale Tony Flanders   06/09/08 10:47 AM
. * Re: Ground Truth for the Bortle Scale a-l-e-x   06/09/08 10:56 AM
. * Re: Ground Truth for the Bortle Scale Tony Flanders   06/09/08 12:31 PM
. * Re: Ground Truth for the Bortle Scale a-l-e-x   06/09/08 07:12 PM
. * Re: Ground Truth for the Bortle Scale csa/montanaModerator   06/08/08 09:54 AM
. * Re: Ground Truth for the Bortle Scale HfxObserver   06/08/08 07:59 AM

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