blog:20231103

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blog:20231103 [2023/11/03 05:17] – created - external edit 127.0.0.1blog:20231103 [2023/11/03 07:59] (current) Roy Prouty
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 =====Time=====  =====Time===== 
 +0510-0800
  
 =====Attendance===== =====Attendance=====
 +Bill, Katie, Tara, Roy
  
 =====Spaces Occupied===== =====Spaces Occupied=====
 +PHYS 401, 433C, Dome
  
 =====Goals===== =====Goals=====
 +  - 
  
 =====Frame Table===== =====Frame Table=====
  
 ^ Time Observed ^ Source Name ^ Filter ^ Int Time [s] ^ Mag (filter) ^ RA [h] ^ DEC [deg] ^ Source Type   ^ Purpose ^ ^ Time Observed ^ Source Name ^ Filter ^ Int Time [s] ^ Mag (filter) ^ RA [h] ^ DEC [deg] ^ Source Type   ^ Purpose ^
-|  YYYYMMDDThhmm | (HD/NGC/ETC)   UVBRI  | e.g., 3  | 1.25(V) | 20 45  | Star  | Pointing |+|  20231103T0522Procyon (HD 61421)   | e.g., 3  | 0.4(V) | 7.75 | Star  | Pointing/PICSARR |  |
  
 =====Log===== =====Log=====
 +  - Normal start-up procedures
 +  - Moved to Procyon
 +  - Focusing
 +      - Starting Focus: 2611.4
 +      - Ending focus is 2611
 +  - Achieving 15-17 pix FWHM
 +  - using phd2 autoguiding with RA tracking rate of 15.011 arcsec/sec
 +  - after we turned on autoguiding, the FWHM reported by sharpcap dropped to between 5 and 6.5 pix
 +  - saving all data to internal Z drive
 +  - On Procyon
 +      - using subarray 1200x250 pan 48, tilt 914
 +      - bin 1, mono16, .ser files, gain 279, brightness 40
 +      - 2 sequences of 120s each in u and g filters, taken before timing calibration
 +      - sequences also taken without .CameraSetting files
 +  - Moved to Venus
 +      - Note, needed to disable autoguiding between sequences to adjust source in frame. Venus does not move with stars, so PHD2 guiding on stars doesn't keep Venus centered
 +      - For all: TurboUSB at 100 (auto set to OFF) and High speed mode off
 +      - U filter
 +          - using subarray 1600x800 pan 48, tilt 640
 +          - bin 1, mono16, .ser files, gain 279, brightness 40
 +          - 2 sequences of 120s each in u filter, taken before timing calibration
 +          - have .CameraSetting files
 +      - G filter
 +          - using subarray 1600x800 pan 48, tilt 640
 +          - bin 1, mono16, .ser files, gain 100, brightness 40
 +          - 2 sequences of 120s each in g filter, taken before timing calibration
 +          - have .CameraSetting files
 +      - Z filter
 +          - using subarray 1600x800 pan 48, tilt 640
 +          - bin 1, mono16, .ser files, gain 200, brightness 40
 +          - 2 sequences of 120s each in z filter, taken before timing calibration
 +          - have .CameraSetting files
 +      - Another 2x120s in U
 +          - Same settings as above
 +  - Slewed to LAWD 73 (GrW +708247)
 +      - We expect this to be too dim to see with $12\mu s$ int time, so we slewed to something we could see (Polaris) to ensure pointing was correct. LAWD 73 is 13 mag, so we didn't want to just do a long exposure with the sky getting bright
 +      - We call this process "Going In Blind"
 +      - AND the SIMBAD ICRS RA & DEC were based on J2000, not J2023.5 (DFMTCS)
 +      - We slewed to Polaris in J2023.5
 +      - Then trusted that J2000 --> J2023.5 didn't change much with a proper motion of LAWD 73 at ~80mas/yr
  
 =====ToDo===== =====ToDo=====
  
 =====Notes===== =====Notes=====
 +  * With ASI 178 pixel scale at $2.4\mu{m}/{pix}$, PICSARR should have angular res of $0.0317 pix/\mu{m} \times 2.4\mu{m}/{pix} = 0.076"/pix$
 +  * Using DFM TCS and TS6 to give slew commands allowed scope to bypass limits on RA movement
 +      * This led to wires beginning to wrap -- we need to pay attention to this in the future
  
 =====Weather===== =====Weather=====
 +At end of night
 +  - 9C in Dome
 +  - 4C ambient
 +  - -27.6C sky temp
 +  - 65% humidity
  
 =====Data===== =====Data=====