Messier 47 (M47)
Also Known as: NGC 2422, Collinder 152
Object Type: Open Cluster
Constellation: Puppis
Distance from Earth: 1,600 light years
Apparent Magnitude: 4.2
Coordinates: RA 07H 36.6M 0S DEC -14 deg 30 min 0 sec
Actual Size: 12 light years in diameter
Apparent Dimensions: 30 arc-minutes
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Environmental Data
Date: March 26, 2020 Start Time: 8:29PM End Time: 9:19PM SQM: 21.11
Moon Age: 2.1 days Moonset: 9:17PM Moon Illumination: 5.1%
Temperature: 52 degrees F Humidity: 58% Dew Point: 38 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Clear
Comment: PHD2 good calibration. Clouds rolled in around 9:30PM
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Imaging Scope Data
Mount: Celestron CPC1100 Mount Camera: ZWO ASI071 Focuser: Optec DirectSync SV35
Telescope: Stellarvue SVX130 refractor Focal Length: 910mm
Focal Reducer/Field Flattener: Field Flattener Filter: None
Rotator: None Power Control: None Dew Heater: Kendrick dew strip
Imaging Software
Mount: iOptron Commander Focuser: Optec FocusLynx Commander
Imaging: Sequence Generator Pro Platesolve: None Rotator/Control: None
Imaging Status
Imaging Software: Sequence Generated Focus Good 1.29 Platesolve:
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Guide Scope Data
Telescope: Stellarvue SV90 refractor Camera: Lodestar X2 Focuser: Optec SVX30
Dew Heater: Kendrick dew strip Software: PHD2 Tracking Result: 1.02 arc-seconds RMS
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Images Taken
Number of light frames: 23 Duration: 2 minutes Gain: HDR
Camera Temperature: -20 degrees C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 0.77 hours
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Number of flat frames: 20 Duration: 0.2 seconds Gain: HDR
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: 60 Duration: 2 minutes Gain: HDR
Camera Temperature: -20 degrees C Binning: 1x1 F-Stop: 7.0
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Number of Bias frames: 60 Duration: 0.001 seconds Gain: HDR
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: DynamicCrop, AutomaticBackgroundExtraction, ImageSolve, SpectroPhotometricColorCalibration, BlurXTerminator
Non-Linear: GeneralizedHyperbolicStretch script, NoiseXterminator, CurvesTransformation.
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Notes:
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