Also Known as: NGC 6913, Collinder 422
Object Type: Open Cluster
Constellation: Cygnus
Distance from Earth: 4,000 light years
Apparent Magnitude: 7.1
Coordinates: RA 20H 23M 56S DEC 38 deg 31.4 min 0 sec
Actual Size: 11 light years in diameter.
Apparent Dimensions: 7 arc-minutes
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Environmental Data
Date: November 3, 2020     Start Time: 8:57PM     End Time: 10:15PM     SQM:
Moon Age: 17.1 days     Moonrise: 6:33PM     Moon Illumination: 93.8%
Temperature: 38 degrees F    Humidity: 60%    Dew Point: 25 degrees F
Location: Westport, Massachusetts 02790    Sky Condition: Hazy
Comment:
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Imaging Scope Data
Mount: iOptron CEM120     Camera: ZWO ASI071 OSC     Focuser: Optec DirectSync SV35
Telescope: Stellarvue SVX130 refractor   Focal Length: 910mm
Focal Reducer/Field Flattener: Field Flattener    Filter: None
Rotator: Pegasus Falcon     Power Control: Pegasus Ultimate Powerbox V2     Dew Heater: Kendrick dew strip
Imaging Software
Mount: iOptron Commander     Focuser: Optec FocusLynx Commander
Imaging: Sequence Generator Pro     Platesolve: None     Rotator/Control: Pegasus Unity Platform
Imaging Status
Imaging Software: Sequence Generated     Focus Good HFR 1.2     Platesolve: Good on 2nd attempt    
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Guide Scope Data
Telescope: Stellarvue SV90 refractor    Camera: ZWO ASI290     Focuser: Optec DirectSync SVX30
Dew Heater: Kendrick dew strip    Software: PHD2    Tracking Result: 0.79 arc-seconds RMS
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Images Taken
Number of light frames: 82        Duration: 1 minute        Gain: Unity Gain        
Camera Temperature: -20 degrees C        Binning: 1x1        F-Stop: 7.0        
Total Integration Time: 1.37 hours
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Number of flat frames: 25       Duration: 0.08 seconds        Gain: Unity Gain        
Camera Temperature: -20 degrees C        Binning: 1x1        F-Stop: 7.0        
Flat Field Illumination: All-Pro 'Spike-a-Flat Field standard' illuminated panel
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Number of Dark frames: 50 (from library)       Duration: 1 minute        Gain: Unity Gain        
Camera Temperature: -20 degrees C        Binning: 1x1        F-Stop: 7.0        
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Number of Bias frames: 50 (from library)      Duration: 0.001 seconds        Gain: Unity Gain        
Camera Temperature: -20 degrees C    Binning: 1x1        F-Stop: 7.0        
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Imaging Processing
Imaging Processing Software: PixInsight
Processes utilized: Linear - calibration/integration: Flats ImageCalibration with Master Bias, Flat ImageIntegration, Images ImageCalibration with Flat Master & Dark Master, Debayer, SubFrameSelector, StarAlign, ImageIntegration
Linear - Background extraction, Color correction, deconvolution, noise reduction: ImageSolve, GradientCorrection, AutoColor calibration script, BlurXterminator, NoiseXterminator
Non-Linear: GeneralizedHyperbolicStretch script, CurvesTransformation. BlurXterminator, DynmaicCrop, Saturation-red
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Notes:
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