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All Sky camera for LSST site. 

...

cron entry time format is

<minute> <hour> <month-day> <month> <week-day> <command to execute>

so we want

1 22 * * * /usr/local/bin/startnight.sh

I suppose we could just go ahead and use crontab to initiate each night's data collection at the desired time, within a range of dates. Say we break things up into two week intervals. For example we could do 

 1 22 1-15 01 * <tasks for first half of Jan>

30 22 16-31 01 * <tasks for second half of Jan>

etc.

So let's make the table of startup times, in the format crontab wants. Make a list of  

minute hour dayrange month

15 00 01-15 01
10 00 16-31 01

...

00 00 01-15 12
15 00 16-31 12

...

gphoto2 commands 

shutter speed: 

server:~ christopherstubbs$ gphoto2 --get-config=/main/capturesettings/shutterspeed

...

to take and store an image with existing settings      gphoto2 --capture-image-and-download --filename ut113013.0001.cr2

 
Dec 1 2013

have fixed up cron task so that it works properly. It turns out need to set paths within the cron script, so sourcing bash_profile within script works.
did power cycle on mac mini and camera, and things run fine after power up.