FreeLists / az-observing / [AZ-Observing] Re: Sub-arcsec seeing on Anderson Mesa

[<fjkraljic@xxxxxxx>]

Comparing this data with seeing forecast models would make an interesting, if 
not useful comparison if this project is ongoing. 

-FRANK

> 
> From: Brian Skiff <Brian.Skiff@xxxxxxxxxx>
> Date: 2005/03/09 Wed PM 10:47:06 EST
> To: az-observing@xxxxxxxxxxxxx
> CC: amastro@xxxxxxxxxxxxxxx
> Subject: [AZ-Observing] Sub-arcsec seeing on Anderson Mesa
> 
>      Len Bright has the image-motion monitor running again tonight:
>  
> http://www.lowell.edu/~lpb/NPOI/rt/seeingStats.html
>  
> ...which is showing subarsecond seeing in the opening hour.  I have
> my Pronto out doing some casual viewing, and can confirm it is
> near perfect in the 70mm aperture. I managed to just glimpse the
> binarity of ADS 6263, the 0".9 pair just east of Procyon.  Not resolved,
> but I estiamted the position angle as 160, and now look up to see
> that it is currently pa169.  I also tried for theta Ori E, the 'fifth'
> start in the Orion trapezium.  At 150x I wouldn't give it any more
> than a "definite maybe".
>      Poking around elsewhere:  the group of clusters involving M46 and M47,
> plus NGC 2423, Melotte 71, and Melotte 72, make a good series showing
> the limits of a small telescope.  M47 is a scattered cluster but with
> lots of bright stars; M46 is rich but the stars are much fainter;
> NGC 2423 is a typical winter Milky Way cluster with a brighter central
> star and perhaps 15-20 stars resolved; Melotte 71 is clearly a rich
> cluster but another step fainter, though a nice triangle on one side
> sets it off; finally Meltte 72 is just too faint for this aperture,
> though a reasonably bright fuzz is readily detectable.
> 
> \Brian
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