======20231119========== =====Time===== 1515-2230 =====Attendance===== Roy, Olivia. Azzan =====Spaces Occupied===== PHYS 401, 433C, Dome =====Goals===== - Reattach 432 to DFM Scope with Filter Wheel - Collect Calibration Frames - Monitor in-dome and ambient temperatures to support understanding seeing measurements - Collect data for limiting magnitude study - Review Data Redux Pipeline =====Frame Table===== ^ Time Observed ^ Source Name ^ Filter ^ Int Time [s] ^ Mag (filter) ^ RA [h] ^ DEC [deg] ^ Source Type ^Scope ^ Purpose ^ Notes^ DomeTemp [C] ^ Gain ^ | 20231119T1736| (Deneb) HD 197345 | I | 0.050 | 1.25 | 20.75 | 45 | Star | Main | Pointing |15.011 w/o ag| 14 | 150 | | 20231119T1943| [[http://james.as.arizona.edu/~psmith/61inch/ATLAS/charts/c1.html|92 250]] | B | 20x2.2 | 13.178(V) | 1 | 0.75 | Star Field | Main | Mag | AG-on, A:1.293 | 13 | 150 | | 20231119T1943| [[http://james.as.arizona.edu/~psmith/61inch/ATLAS/charts/c1.html|92 250]] | V | 20x1.6 | 13.178(V) | 1 | 0.75 | Star Field | Main | Mag | AG-on, A:1.347 | 13 | 150 | | 20231119T1943| [[http://james.as.arizona.edu/~psmith/61inch/ATLAS/charts/c1.html|92 250]] | R | 20x1.4 | 13.178(V) | 1 | 0.75 | Star Field | Main | Mag | AG-on, A:1.301 | 13 | 150 | | 20231119T1943| SA 20-340 | B | 20x2.8 | 8.95(V) | 1 | 46 | Star Field | Main | Mag | AG-on, A:1.009 | 12 | 150 | | 20231119T2128| SA 20-340 | V | 20x2.0 | 8.95(V) | 1 | 46 | Star Field | Main | Mag | AG-on, A:1.010 | 12 | 150 | | 20231119T1943| SA 20-340 | R | 20x1.9 | 8.95(V) | 1 | 46 | Star Field | Main | Mag | AG-on, A:1.011 | 12 | 150 | | 20231119T1703| FLAT | B| 0.21s | - | - | - | FLAT | Main | Calibration | Used NINA| 14 | 0| | 20231119T1703| FLAT | V| 0.21s | - | - | - | FLAT | Main | Calibration | Used NINA| 14 | 0| | 20231119T1703| FLAT | R| 0.10s | - | - | - | FLAT | Main | Calibration | Used NINA| 14 | 0| | 20231119T1703| FLAT | I| 0.11s | - | - | - | FLAT | Main | Calibration | Used NINA| 14 | 0| | 20231119T1625| DARK | -| 2.2s | - | - | - | DARK | Main | Calibration |--| 14 | 150 | | 20231119T1625| DARK | -| 1.6s | - | - | - | DARK | Main | Calibration |--| 14 | 150 | | 20231119T1625| DARK | -| 1.4s | - | - | - | DARK | Main | Calibration |--| 14 | 150 | | 20231119T1625| DARK | -| 2.8s | - | - | - | DARK | Main | Calibration |--| 14 | 150 | | 20231119T1625| DARK | -| 2.0s | - | - | - | DARK | Main | Calibration |--| 14 | 150 | | 20231119T1625| DARK | -| 1.0s | - | - | - | DARK | Main | Calibration |--| 14 | 150 | | 20231119T1703| DARK | B| 8.53s | - | - | - | FLAT | Main | Calibration | Used NINA| 14 | 0| | 20231119T1703| DARK | V| 3.39s | - | - | - | FLAT | Main | Calibration | Used NINA| 14 | 0| | 20231119T1703| DARK | R| 3.0s | - | - | - | FLAT | Main | Calibration | Used NINA| 14 | 0| | 20231119T1703| BIAS | - | 0.032ms | - | - | - | FLAT | Main | Calibration | | 14 | 0| | 20231119T1703| BIAS | - | 0.032ms | - | - | - | FLAT | Main | Calibration | | 14 | 150| =====Log===== - Opened dome at 1515 - Turned-on exhaust fan - Attached 432 to UVBRI Filter Wheel to Instrument Rotator to GAM-lite - Taped Icron LED lights up and taped gap above instrument rotator (see picture) - Choosing not to North-align to favor collection of sky flats - Set focus to 1907.4, which was the optimal focus arrived at on 20231117 - Took flats while sun was setting, had to move towards west because of moving object in frames - Pointed on Deneb -- out of focus! - The decision was made to get us in focus -- which would ruin flats from earlier. - SO. We will focus anyway, then north-align, then take dome flats at the end of the night. But only in BVRI because the dome is a bad ultra-violet radiator. COOL - Deneb is too bright to focus on. But good for pointing :) - Pointed at HD 200905, **OPTIMAL FOCUS IS 1913.6** - Set Thor Inst Rotator to 85 deg for north-alignment - Found two nice resources (see notes) for star fields with photometry - Identified field [[http://james.as.arizona.edu/~psmith/61inch/ATLAS/charts/c1.html|92 250, near equator]] - FOR 92-250 - In B, skyBrightness of 9.76 e-/pix/s, actual gain of 4.44 e/ADU, dome temp 13, HFD 6.65, 4.37" - In V, skyBrightness of 13.61 e-/pix/s, actual gain of 4.44 e/ADU, dome temp 13, HFD 6.565 4.7" - In R, skyBrightness of 14.91 e-/pix/s, actual gain of 4.44 e/ADU, dome temp 13, HFD 6.75, 4.57" - In I, skyBrightness of 3.40 e-/pix/s, actual gain of 4.44 e/ADU, dome temp 13, HFD 6.65, 4.44" - MOVED TO SA 20-340, from lamdolt paper - In B, skyBrightness of 7.63 e-/pix/s, actual gain of 4.44 e/ADU, dome temp 12, HFD 6.04, 4.27" - In V, skyBrightness of 10.56 e-/pix/s, actual gain of 4.44 e/ADU, dome temp 12, HFD 6.05 4.22" - In R, skyBrightness of 11.34 e-/pix/s, actual gain of 4.44 e/ADU, dome temp 12, HFD 6.20, 4.03" - In I, skyBrightness of 2.45 e-/pix/s, actual gain of 4.44 e/ADU, dome temp 12, HFD 6.00, 4.46" - Moved to taking flats - Moved to taking darks - Moved to taking biases =====ToDo===== Pls schedule good weather more spread out, thx. =====Notes===== - [[http://james.as.arizona.edu/~psmith/61inch/ATLAS/tableA.html| Main Index of Equatorial UBVRI Photometric Standard Stars]] - [[https://iopscience.iop.org/article/10.1088/0004-6256/146/5/131/pdf| U BV RI PHOTOMETRIC STANDARD STARS AROUND THE SKY AT +50 deg DECLINATION]] - Optimal black level is just brightness -_- HOW TO TAKE STARFIELD LGIHT FRAMES: 1: find field 2: match to finder chart best as possible, use vertical/horizontal flips as nesscary 3: in sharpcap, go to tools>histrogram>brain icon 4: select ignore edges, minimum exposure 0.5s, max 2m, read noise limit 50%, total stacking time 5m, aim for max dynamic raneg 5: select measure (may take a minute or two to optimize) 6: apply settings 7: MAKRE SURE GUIDNING IS on 8: go to start capture, set reasonable name with filter name, 20 frames, start 9: record sky brightness, optimal gain, actual gain, exposure time, dome temp from acurite monitor, airmass, HFD from PHD2(big number and smaller), 10:Populate chart in blog :) =====Weather===== - Sky Alert Data file uploaded to 2023-11-19 file on gDrive =====Data===== - All frames copied to 2023-11-19 on gDrive