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New Data Set
Last night I got in a fair run. The scheme is short, long, short, long,
exposure group with a dark frame group every 5 data group. Looks like I
have enough data to fill 3 CD ROMs. Note that one set of data, 4 live
frames and one dark frame in two filters and two short and two long
exposures uses 320 MB of storage. So one gets only two sets per CD.
Each 4 frame group requires about 12 minutes to take. Since it takes a
star 16 minutes to traverst the field, there is a decent overlap. With a
dark group every 5 groups this gives a dark frame group every hour.
Someone asked for many dark frames to average. It is probably not worth
the effort. I subtracted the first from the last long exposure dark frame
and got a difference of 1 count.
I made this run specifically at the request of Michael Richmond. I will
make a copy of it for anyone else that is really interested in working on
it. It is a big effort to make a copy so don't ask unless you have a
project in mind. Well, it is not that big an effort, but it does require
several hours a set if I remember to tend to the disk drive every time it
is ready for the next copy.
There is a problem with the first 50 or so lines of the I camera on this
data, otherwise it looks pretty good. I could probably get a better focus,
but not much better.
I am calling this Disk Set 9