Messier 100 (M100)
Also Known as: NGC 4321
Object Type: Grand Design Spiral Galaxy
Constellation: Coma Berenices
Distance from Earth: 55 million light years
Apparent Magnitude: 10.1
Coordinates: RA 12H 22M 54.9S DEC 15 deg 49 min 21 sec
Actual Size: 107,000 light years in diameter
Apparent Dimensions: 7.4 arc-minutes x 6.3 arc-minutes
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Environmental Data
Date: June 9, 2022 Start Time: 9:20PM End Time: 1:25AM SQM: 15.24
Moon Age: 9.8 days Moonset: 2:09AM Moon Illumination: 74.8%
Temperature: 71 degrees F Humidity: 68% Dew Point: 60 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Clear
Comment: Moon is bright and fairly close to M100. Noticed dust on first images so cleaned optics and continued. Last few images very low in West.
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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: Pegasus Falcon Power Control: Pegasus Ultimate Powerbox V2 Dew Heater: Kendrick dew strip
Imaging Software
Mount: iOptron CEM120 Focuser: Optec FocusLynx Commander
Imaging: Sequence Generator Pro Platesolve: ASTAP Rotator/Control: Pegasus Unity Platform
Imaging Status
Imaging Software: Sequence Generated Focus Platesolve: Good on 2nd attempt
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Guide Scope Data
Telescope: Stellarvue SVX130 Camera: ZWO ASI290 Focuser: Optec DirectSync SV35
Dew Heater: Kendrick dew strip Software: PHD2 Exposure: 1 sec Binning: 1x1 Tracking Result: 0.66 arc-seconds RMS with wind spikes
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Images Taken
Number of light frames: 105 Duration: 2 minutes Gain: 100
Camera Temperature: 0 degrees C Binning: 2x2 F-Stop: 7.0
Total Integration Time: 3.5 hours
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Number of flat frames: 50 Duration: 0.15 seconds Gain: 100
Camera Temperature: 0 degrees C Binning: 2x2 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: 0 degrees C Binning: 2x2 F-Stop: 7.0
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Number of Bias frames: 50 (from library) Duration: 0.001 seconds Gain: 100
Camera Temperature: 0 degrees C Binning: 2X2 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, ImageSolve, SpectroPhotometricColorCalibration, BlurXTerminator, NoiseXterminator
Non-Linear: GeneralizedHyperbolicStretch script, CurvesTransformation, MultiscaleLinearTransform for sharpening, DynamicCrop, HistogramTranformation
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