Messier 103 (M103)
Also Known as: NGC 581, Collinder 14
Object Type: Open Cluster
Constellation: Cassiopeia
Distance from Earth: 10,000 Light years
Apparent Magnitude: 7.4
Coordinates: RA 01H 33.3M 0S DEC 60deg 42min 0sec
Actual Size: 17.5 light years in diameter
Apparent Dimensions: 6.0 arc-minutes
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Environmental Data
Date: November 27, 2021 Start Time: 6:26PM End Time: 10:22PM SQM: 19.89
Moon Age: 22.1 days Moonrise: 11:46PM Moon Illumination: 50.7%
Temperature: 33 degrees F Humidity: 67% Dew Point: 25 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Clear, winds 10-15 MPH
Comment:
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Imaging Scope Data
Mount: Celestron CPC1100 Mount Camera: ZWO ASI2600 OSC Focuser: Optec QuickSync FT20
Telescope: Celestron 11 inch SCT Edge Focal Length: 1960mm
Focal Reducer/Field Flattener: 0.7 focal reducer Filter: None
Rotator: Manual Power Control: None Dew Heater: Kendrick dew strip
Imaging Software
Mount: iOptron CEM120 Focuser: Optec FocusLynx Commander
Imaging: Sequence Generator Pro Platesolve: ASTAP Rotator/Control:
Imaging Status
Imaging Software: Sequence Generated Focus HFR 2.24 Platesolve: Success on 4th attempt using manual rotator
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Guide Scope Data
Telescope: Stellarvue SVX130 refractor Camera: Lodestar X2 Focuser: Optec DirectSync SV35
Dew Heater: Kendrick dew strip Software: PHD2 Exposure: 2 sec Binning: 1x1 Tracking Result: 0.4 arc-seconds RMS with frequent wind gusts
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Images Taken
Number of light frames: 227 Duration: 1 minute Gain: 100
Camera Temperature: -20 degrees C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 3.78 hours
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Number of flat frames: 20 Duration: 0.1 seconds Gain: 100
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: 100
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: 100
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, DynamicBackgroundExtraction, ImageSolve, SpectroPhotometricColorCalibration, BlurXTerminator, NoiseXterminator
Non-Linear: GeneralizedHyperbolicStretch script, MultiscaleLinearTransform for sharpening.
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Notes:
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