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Star Flat Observations » History » Version 4

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Klaus Honscheid, 10/31/2012 09:29 AM


Star Flat Observations

We want to observe all five filters using 20 pointings under good seeing and photometric condidtions.

Field Name Base RA Base Dec No x Time of Exposures
g r i z Y
Stripe82 348.0 0.0 20 x 80 s 20 x 80 s 20 x 100 s 20 x 100 s 20 x 50 s
Dense Field 94.15 -23.6 20 x 80 s 20 x 80 s 20 x 100 s 20 x 100 s 20 x 50 s

The Stripe82 pointing is available early in the night and the Dense Field in the early morning. Additionally
any dense field at low galactic latitude would work.

Dither Pattern

Use the following offsets for the dither pattern

RA Offset Dec Offset
0.0 0.0
0.027956 0.018155
-0.027634 0.018698
-0.053566 -0.063837
0.074250 -0.037825
0.116090 -0.119586
0.064720 0.153587
0.261366 0.174538
-0.262787 0.172391
0.395858 -0.238018
0.064422 0.457390
-0.490048 0.362453
-0.142163 -0.592713
0.103031 0.750100
-0.730728 -0.198247
-0.629754 0.649618
-0.351912 -0.833518
-1.051530 -0.042188
0.449703 -0.951458
0.843755 0.517269