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Spreadsheet with TML observations?

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#1 WRAK

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Posted 18 July 2013 - 02:01 AM

As my own progress in making telesocpe magnitude limit observations is quite slow I would be interested to get TML observations from other observers.
Bradley Schaefer included a list of TML observations in his paper http://adsabs.harvar...PASP..102..212S to check (with not this huge success) his TML algorithm - does anybody know of the availability of a spreadsheet with these observations?
Wilfried

#2 WRAK

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Posted 20 July 2013 - 03:55 AM

Due to the lack of an already existing spreadsheet with the TML observations from Schaefers work I entered a selection (with NEML=6 and magnification ~1.5*D_mm) manually and checked the statistical value of the simple 2.7+5*LOG10(D_mm) formula and found that it works reasonable good with a slightly higher base value of 2.936 and a standard deviation of 0.482.
While it is cumbersome to select and enter the observations manually I will continue with this approach to check my meanwhile developed new approach for calculating the effect of light pollution on resolving faint companions of wide doubles.
Wilfried
PS: The by light pollution increased increment faintness of the secondary dNEML is calculated as
6.93559616693627E-02+4.32571272410334*LOG(((6.5/NEML)^2),2.512)^1.81526832546765*(M2/18)^8.00090419543305. This seems to work quite well for refractors (regression coefficient compared with Schaefers model is 0.992) and in the next step I will have to include the effects of central obstruction

#3 Asbytec

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Posted 21 July 2013 - 09:29 AM

Wilfried, I look forward to rolling up my sleeves in November (dry season) and start observing doubles, again. It is enjoyable keeping tabs on your work.

#4 WRAK

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Posted 24 July 2013 - 05:03 PM

Norme, looking forward too - your contributions to discussion and observation data set are very welcome.
Wilfried


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