IC 239
Also Known as: UGC 2080
Object Type: Intermediate Spiral Galaxy
Constellation: Andromeda
Distance from Earth: 30 to 40 million light years
Apparent Magnitude: 12.2
Coordinates: RA 02H 36M 28S DEC 38 deg 58 min 11 sec
Actual Size: 43 light years in diameter
Apparent Dimensions: 4.25 arc-minutes x 4.01 arc-minutes
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Environmental Data
Date: November 20, 2022 Start Time: 5:52PM End Time: 2:45AM SQM: 16.66
Moon Age: 25.9 days Moonrise: 2:39AM Moon Illumination: 13.8%
Temperature: 32 degrees F Humidity: 50% Dew Point: 15.6 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Clear, windy
Comment: Installed wind shield on West side of observatory to mitigate the wind gusts.
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Imaging Scope Data
Mount: iOptron CEM 120 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: 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: ASTAP Rotator/Control: Pegasus Unity Platform
Imaging Status
Imaging Software: Sequence Generated Focus HFR 2.31 Platesolve: Good on 3rd attempt
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Guide Scope Data
Telescope: Stellarvue SVX130 refractor Camera: ZWO ASI290 Focuser: Optec DirectSync SV35
Dew Heater: Kendrick dew strip Software: PHD2 Exposure: 1-2.5 sec Binning: 1x1 strong>Tracking Result: between .6 arc-seconds and 1.31 arc-seconds RMS due to sporatic winds
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Images Taken
Number of light frames: 224 Duration: 2 minutes Gain: 100
Camera Temperature: -10 degrees C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 7.47 hours
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Number of flat frames: 50 Duration: 0.15 seconds Gain: 100
Camera Temperature: -10 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: 2 minutes Gain: 100
Camera Temperature: -10 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: -10 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: DynamicBackgroundExtraction, SpectroPhotometricColorCalibration, BlurXTerminator, NoiseXterminator
Non-Linear: GeneralizedHyperbolicStretch script, MultiscaleLinearTransform for sharpening, CurvesTransformation, DynamicCrop.
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Notes:
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