Goodman Dome/Quartz flats and Comps Exposure Times

Updated 02 Mar 2021

Goodman RED camera typical DOME FLAT lamp exposure times (for 2x2 binning, 344ATTN3 readout mode)

Mode Type Slit Lamp (%) / Exp (s) Texp
(s)
 ADU
400M1 no filter Spec 1 100 7 28000 (1)
400M2 +GG455 flter Spec 1 100 5 25000 (1)
600MID + GG395 filter Spec 1 100 12 29000 (1)
930M2 no filter Spec 1 100 60 27000 (1)
SDSS-g Img --- 30 2.5 21000 (2)
SDSS-r Img --- 15 1.5 24000 (2)
SDSS-i Img --- 10 1 27000 (2)
VR Img --- 10 3 25500 (2)

(1)  Max ADU count, at red end of spectrum
(2) Average ADU count

Goodman RED camera typical QUARTZ FLAT lamp exposure times (344ATTN3 readout mode)
 

Mode Binning Slit
(")
Lamp (%) / Exp (s) Texp
(s)
MAX ADU
400M1 no filter 2x2 1 70 3 39600
400M2 +GG455 flter 2x2 1 70 1.5 34000
600MID + GG395 filter 2x2 1 70 5 36000
930M2 no filter 2x2 1 100 3.5 29500
2100@650+GG455 filter 1x2 0.45 100 15 24000

Goodman RED camera typical COMPARISON lamp exposure times (200ATTN0 readout mode)

Mode Binning Slit
(")
ARC LAMP Exp
(s)
400M1 no filter 2x2 1 HgArNe 0.5
400M2 + GG455 filter 2x2 1 HgArNe 0.5
600MID + GG395 filter 2x2 1 HgArNe 0.5
930M2 no filter 2x2 1 Cu(HeAr) 120
2100@650+GG455 filter 1x2 0.45 HgArNe 0.5
2100@5577 1x2 0.45 HgArNe 1

 

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Goodman BLUE camera typical DOME FLAT lamp exposure times (for 2x2 binning, 200ATTN0 readout mode)

Mode Type Slit Lamp (%) / Exp (s) Texp
(s)
 ADU
400M1 no filter Spec 1 100 7 29600 (1)
400M2 +GG455 flter Spec 1 100 7 30000 (1)
600MID + GG395 filter Spec 1 100 12 29500 (1)
930M2 no filter Spec 1 100 45 23600 (1)
SDSS-g Img --- 40 1.5 31000 (2)
SDSS-r Img --- 15 1.5 24600 (2)
SDSS-i Img --- 10 1 22000 (2)
VR Img --- 15 1 25000 (2)

(1)  Max ADU count, at red end of spectrum
(2) Average ADU count

Goodman BLUE camera typical QUARTZ FLAT lamp exposure times (200ATTN0 readout mode)

Mode Binning Slit
(")

 
Lamp (%) Exp
(s)
MAX ADU
400M1 no filter 2x2 1 70 2.5 30900
400M2 + GG455 filter 2x2 1 70 2 31800
600MID + GG395 filter 2x2 1 70 4 28700
930 M2 no  filter 2x2 1 100 3 29000

Goodman BLUE camera typical COMPARISON lamp exposure times (for 2x2 binning, 200ATTN0 readout mode)

Mode ARC LAMP Exp
(s)
400M1 no filter HgArNe 0.3
400M2 + GG455 filter HgArNe 0.3
600MID + GG395 filter HgArNe 0.3
930M2 no filter Cu(HeAr) 90