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Home > Astronomy > Wide Field Camera > Observing Guide |
WFC Dome Flat Assistant
We give some guides about exposure times to be used with WFC and different filters to
acquire dome flats with optimum signal (around ~30,000 +/- 1000 counts). We include two
dome lightening levels, namely Full and 2/3 setting (corresponding to the marker on the
dial pointing to the top left corner of its square casing).
The values here displayed are for the CCD with no binning (bin 1x1).
|
Readout Speed | Filter | Filter Nr. | Filter (Mimic) |
Flat Lamp Lightening | Exp. time (s) |
Slow | O5008 | 196 | O3 | Full | |
Slow | H-alpha (H6568) |
197 | Ha |
Full | 9 |
Slow | StrU | 198 | stU | Full | |
Slow | StrV | 199 | stV |
Full | 520 |
Slow | StrB | 200 | stB |
Full | 47 |
Slow | StrY | 201 | stY |
Full | 12.9 |
Slow | He4686 | 206 | He2 |
Full | 103 |
Slow | H-alpha (8160) | 209 | N8 |
Full | 10 |
Slow | S6725 | 212 | SII |
Full | 9 |
Slow |
StrHbW |
224 |
Hbb |
Full |
35 |
Slow | StrHbN | 225 | Hbn |
Full | 240 |
Slow | 782 | 236 | 782 |
Full | 6 |
Slow | 804 | 237 | 804 |
Full | 6 |
Slow | HARB | 191 | B | Full | 60 |
Slow | HARV | 192 | V | Full | 2.5 |
Slow | HARR | 193 | R | Full | 2 |
Slow | RGOI | 194 | I | 1/3 | 3.5 |
Slow | RGOZ | 195 | Z | 1/3 | 6.1 |
Slow | SloanR | 214 | r |
Full | 2 |
Slow | SloanI | 215 | i |
3/4 | 2 |
Slow | OIII | 196 | Full | 60 | |
Slow |
SloanG |
220 |
Full |
15 |
|
Fast | O5008 | 196 | O3 | Full | |
Fast | H-alpha | 197 | Ha |
Full | 18 |
Fast | StrU | 198 | stU | Full | |
Fast | StrV | 199 | stV |
Full | 1030 |
Fast | StrB | 200 | stB | Full | 90 |
Fast | StrY | 201 | stY |
Full | 25.8 |
Fast | He4686 | 206 | He2 |
Full | 205 |
Fast | H-alpha (8160) | 209 | N8 | Full | 20 |
Fast | S6725 | 212 | SII |
Full | 17.9 |
Fast | StrHbW | 224 | Hbb |
Full | 72 |
Fast | StrHbN | 225 | Hbn | Full | 480 |
Fast | HARB | 191 | B | Full | 120 |
Fast | HARV | 192 | V | Full | 5 |
Fast | HARR | 193 | R | Full | 4 |
Fast | RGOI | 194 | I | 1/3 | 7.4 |
Fast | RGOZ | 195 | Z | 1/3 | 12 |
Fast | SloanR | 214 | r |
Full | 5 |
Fast | SloanI | 215 | i |
Full | 2 |
Fast | OIII | 196 | Full | 120 | |
Fast | SloanG | 220 | Full | 30 |
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