[Aavso-photometry] New AAVSO Online Airmass & ScintillationCalculator

[Arne Henden]

My guess is that you need to give longitude as "minus".
This is the common convention.
Arne

Brian Warner wrote:
> Aaron,
> 
> I gave it a go last night, checking on an asteroid I was imaging. I entered what I thought were the
> right values and the air mass came out about 1.9. Considering the thing was currently at +85°
> altitude, I thought that might be wrong <g>
> 
> Here's the return screen:
> 
> 
> AAVSO Air Mass & Scintillation Calculator Results
> RA               03:45:00
> Dec.            +43:48
> Lat.             39.1
> Long.           104.75
> Date            2004/12/07//23/00/00
> Aperture        50
> Integration     180
> LAST            127.530705
> HA             -79.13010 (-5.27534 h)
> Scintillation    0.00105
> Airmass        1.84298
> 
> 
> In your AAVSO observation report put Airmass: 1.84298 in the Comments Explained field.
> 
> Here is a list of projected airmass and scintillation for the next ten hours.
>           JD        Date (UT)       Airmass      Scintillation
>      2453346.5576  1:00 12/7        1.46698         0.00070
>      2453346.5993  2:00 12/7        1.24390         0.00053
>      2453346.6410  3:00 12/7        1.10987         0.00043
>      2453346.6826  4:00 12/7        1.03489         0.00038
>      2453346.7243  5:00 12/7        1.00469         0.00036
>      2453346.7660  6:00 12/7        1.01404         0.00037
>      2453346.8076  7:00 12/7        1.06454         0.00040
>      2453346.8493  8:00 12/7        1.16524         0.00047
>      2453346.8910  9:00 12/7        1.33666         0.00060
>      2453346.9326  10:00 12/7       1.62151         0.00084
> 
> 
> The air mass given for 05:00 was approximately correct. Something seems amiss or I'm not
> understanding how to use/read the data.
> 
> Thanks.
> 
> 
> 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
> 
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