IC 342
Common Name: The Hidden Galaxy
Also Known as: Caldwell 5
Object Type: Intermediate Spiral Galaxy
Constellation: Camelopardalis
Distance from Earth: 10.7 million light years
Apparent Magnitude: 9.1
Coordinates: RA 03H 46M 48.5S DEC 68 deg 05 min46 sec
Actual Size: 75,000 light year in diameter
Apparent Dimensions: 21.4 arc-minutes x 20.9 arc-minutes
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Environmental Data
Date: December 6, 2020 Start Time: 6:37PM End Time: 1:41AM SQM: 19.92
Moon Age: 20.5 days Moonrise: 10:17PM Moon Illumination: 67.4%
Temperature: 36 degrees F Humidity: 65% Dew Point: 25 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Clear
Comment: Installed wind shield on West side of observatory.
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Imaging Scope Data
Mount: iOptron CEM 120 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: Platesolve 2 Rotator/Control: Pegasus Unity Platform
Imaging Status
Imaging Software: Sequence Generated Focus HFR 1.41 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 Tracking Result: 0.8 arc-seconds RMS with some wind spikes.
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Images Taken
Number of light frames: 130 Duration: 30 seconds, 1 minute, 2 minutes, 4 minutes Gain: Unity Gain
Camera Temperature: -20 degrees C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 1 hour each
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Number of flat frames: 40 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: 30 seconds 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: DynamicBackgroundExtraction, DynamicCrop, SpectroPhotometricColorCalibration, BlurXTerminator, NoiseXterminator
Non-Linear: GeneralizedHyperbolicStretch script, CurvesTransformation, StarReduction script, CuvresTransformation for blue.
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Notes:
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