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Proposal for Data Set 20
I am working on a set of data to send out as Data Set 20.
The field is centered roughly at 4h50m, +7.5d
I have data taken starting the run on the evening of:
Each evening will contain a complete run of 56 frames in V and I of the
field. There are a few clouds on some of the frames but there are always
40 or so "good" frames. The WCS are pretty good in RA but mostly a degree
low in Declination. Should be close enough to find stars in the field. I
could find them by eye.
The complete set is proposed to consist of 10 disks.
2 ea Flatfield runs taken on November 16th (for light box flats)
1 Flat run taken on October 17 (for sky flats)
2 V and I fields at 4h50m taken on October 17
1 Flat run taken on November 9 (for sky flats)
2 V and I fields at 4h50m taken on November 9
2 V and I fields at 4h50m taken on November 17
A total of ten disks.
The object frames consist of 56 exposures of 100 seconds each centered as
The light box flats contain 40 flats, 20 darks, and 20 bias frames
The Flat runs contain 17 object frames with the camera moved between
frames, 1 bias frame and 3 dark frames.
Most of the stars will thus have about 150 measurements taken in V and I
with time epochs of one month, 8 days, 16 days and 3 minutes to 2.3 hours.
This should be enough to look for a range of periods.
This data was picked because the moon conditions were pretty good, and I
had three days spread out in time of nearly the same field.
This is probably the best data yet. No ice on the V camera.