From: stephanie snedden
Subject: Re: 2.5m obslog 20070414 (MJD 54205)
Date: Sun, 15 Apr 2007 16:35:11 -0600
Thanks, Steve. As soon as my memory kicked into gear, Shannon and I
made the necessary conversion. However, by that time, Shannon &
Audrey were already imaging a different stripe. No science time was
lost to this.
Steph
On Apr 15, 2007, at 4:28 PM, Stephen Kent wrote:
>> We were going to try to image strip 10 S, but ran into problems with
>> calcStripeParams (see log for details).
>
> This was my problem - the observing plan gave the start and end
> coordinates using "mu" (Great Circle Longitude) but for stripe numbers
> less than 100, calcStripeParams and scanStripe use "lambda" (Survey
> Longitude).  The conversion is mu = lambda + 185.  (The reason for two
> types of longitude is long tale).  I had forgotten to do the
> conversion.
>
> In any case, the observing plan for stripe 10 should read
>
> Strip    Start   End  Start-Time-Range  Length(hr)
>          Lambda  Lambda    (UT)
>
>   10 S    -20    -3   2:11   6:19       1.1  XX
>
> Sorry about that.
>
> Steve