NGC 925
Common Name: Amatha Galaxy
Also Known as: UGC 01913
Object Type:Barred Spiral Galaxy
Constellation: Triangulum
Distance from Earth: 30.0 million light years
Apparent Magnitude: 10.7
Coordinates: RA 02H 27M 16.913S DEC 33 deg 34 min 43.97 sec
Actual Size: 92,000 light years
Apparent Dimensions: 10.5 arc-minutes x 5.9 arc-minutes
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Environmental Data
Date: November 18, 2020 Start Time: 6:07PM End Time: 2:05AM SQM: 19.93
Moon Age: 4.0 days Moonset: 7:35PM Moon Illumination: 17.4%
Temperature: 30 degrees F Humidity: 58% Dew Point:
Location: Westport, Massachusetts 02790 Sky Condition: Clear
Comment: PHD2 good calibration
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Imaging Scope Data
Mount: iOptron CEM120 Camera: ZWO ASI071 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 rotator Power Control: 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 1.49 Platesolve: Good on 3rd attempt
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Guide Scope Data
Telescope: Stellarvue SVX130 refractor Camera: ZWO ASI290 Focuser: Optec DirectSync SV535
Dew Heater: Kendrick dew strip Software: PHD2 Tracking Result: 2.0 arc-seconds RMS
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Images Taken
Number of light frames: 200 Duration: 2 minutes Gain: Unity Gain
Camera Temperature: -20 degrees C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 6.67 hours
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Number of flat frames: 30 Duration: 0.15 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: 2 minutes 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: DynamicCrop, DynamicBackgroundExtraction, ImageSolve, SpectroPhotometricColorCalibration, BlurXterminator, NoiseXterminator
Non-Linear: GeneralizedHyperbolicStretch script, MultiscaleLinearTransform for sharpening, CurvesTransformation.
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Notes:
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