NGC 103 & Sh2-173
Also Known as: Cr 1
Object Type: Open Cluster
Constellation: Cassiopeia
Distance from Earth: 4,600 Light years
Apparent Magnitude: 9.8
Coordinates: RA 00H 25M 18S DEC 61 deg 21 min 0 sec
Actual Size: 8.5 light years
Apparent Dimensions: 6.4 arc-minutes x 6.4 arc-minutes
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Environmental Data
Date: January 26, 2022 Start Time: 6:37PM End Time: 11:19PM SQM: 18.54
Moon Age: 23.1 days Moonrise: 1:10AM Moon Illumination: 39.8%
Temperature: 21 degrees F Humidity: 50% Dew Point: 4.8 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Clear
Comment: PHD2 good calibration
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Imaging Scope Data
Mount: iOptron CEM120 Camera: ZWO ASI2600 OSC Focuser: Optec DirectSync SV35
Telescope: Stellarvue SVX130 refractor Focal Length: 910mm
Focal Reducer/Field Flattener: Field Flattener Filter: None
Rotator: Pegasus Falcon rotator Power Control: None Dew Heater: Kendrick dew strip
Imaging Software
Mount: iOptron Commander Focuser: Optec FocusLynx Commander
Imaging: Sequence Generator Pro Platesolve: ASTAP Rotator/Control: Pegasus Unity Platform
Imaging Status
Imaging Software: Sequence Generated Focus HFR 1.11 Platesolve: Good on 3rd 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 Exposure: 1 sec Binning: 1x1 Tracking Result: 0.65 arc-seconds RMS with wind spikes
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Images Taken
Number of light frames: 71 Duration: 4 minutes Gain: 100
Camera Temperature: -20 degrees C Binning: 1x1 F-Stop: 7.0
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Number of flat frames: 50 Duration: 0.1 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: 4 minutes 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, AutomaticBackgroundExtraction, ImageSolve, SpectroPhotometricColorCalibration, BlurXTerminator, NoiseXTerminator
Non-Linear: GeneralizedHyperbolicStretch script, CurvesTransformation, EzStar Reduction script, EzMask script, CurvesTransformation, StarReduction script, DynamicCrop, CurvesTransformation, CurvesTransformation to enhance saturation and blue channel.
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Notes:Intermitent spotty guiding.
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