[Aavso-photometry] New AAVSO Online Airmass & ScintillationCalculator

[Radu Corlan]

On Wed, 8 Dec 2004, Brian Warner wrote:

> All,
> 
> Sorry, I should have prefaced all this with a hearty "THANKS" as the effort and time are greatly
> appreciated. I wasn't presuming the page was wrong. In my case, operator error should be the first
> five possibilities on the list before checking the code.
> 
> 
> Arne,
> 
> >From the input screen:
> 
>      "Observer Longitude  dd.ddd or dd mm ss. East is negative"
> 
> 
> So I left it positve. Colorado IS _west_ of Greenwich, right?
> 
> 
> Aaron,
> 
> The format sample gives the double slash between date and time, so that's why I put it there:
> 
>     "JD or yyyy/mm/dd//hh/mm/ss"
> 
> The result you got is even more incorrect (AM = Airmass 2.85891). The asteroid was nearly on the
> meridian at upper culmination and so about 5-8° from the zenith
> 
> I took Arne's suggestion and changed the longitude to negative. The value is 1.2, which seems a bit
> off from what I was getting otherwise but I may not be remembering the exact RA/Dec correctly (I
> know the time was 0600 UT as I had intended going to bed an hour before and didn't until four hours
> later).

Brian,

I think the page expects UT time (not local). That could explain the 
difference ;-).

Radu


> 
> 
> 
> Clear Skies,
> Brian Warner
> Palmer Divide Observatory (IAU 716)
> http://www.MinorPlanetObserver.com
> 
> Collaborative Asteroid Lightcurve Link (CALL)
> http://www.MinorPlanetObserver.com/astlc/default.htm
> 
> _______________________________________________
> Aavso-photometry mailing list
> Aavso-photometry at mira.aavso.org
> http://www.aavso.org/mailman/listinfo/aavso-photometry
> 
> 

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-------------
Radu Corlan       Snail Mail: Bucuresti sect. 1, 
rcorlan at pcnet.ro  str. Argentina nr. 28, Romania

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