Messier 14 (M14)
Also Known as: NGC 6402, BD-03 4142
Object Type: Globular Cluster
Constellation: Ophiuchus
Distance from Earth: 30,300 Light years
Apparent Magnitude: 7.6
Coordinates: RA 17H 37M 36.15S DEC -3 deg 14 min 45.3 sec
Actual Size: 100 light years in diameter.
Apparent Dimensions: 11 arc minutes.
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Environmental Data
Date: June 18, 2021 Start Time: 2:21AM End Time: 3:49 AM SQM: 15.20
Moon Age: 7.2 days Moonset: 0:51AM Moon Illumination: 48.0%
Temperature: 68 degrees F Humidity: 68% Dew Point: 57 degrees F
Comment: Meridian flip failed. iOptron CEM120 setting reverted to default which is to 'stop' at meridian. Imaged both M12 and M14 in the same night.
Location: Westport, Massachusetts 02790 Sky Condition: Clear
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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 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 Good HFR 3.09 Platesolve: Good on 2nd 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: 2.5 sec Binning: 1x1 Tracking Result: 0.6 to0.87 arc-seconds RMS
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Images Taken
Number of light frames: 73 Duration: 1 minute Gain: Unity Gain
Camera Temperature: 0 degrees C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 1.22 hours
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Number of flat frames: 0 Duration: 0.08 seconds Gain: Unity Gain
Camera Temperature: 0 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: 0 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: 0 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: GradientCor, ImageSolve, SpectroPhotometricColorCalibration, BlurXTerminator, NoiseXterminator, DynamicCrop
Non-Linear: GeneralizedHyperbolicStretch script, MultiScaleLinear Transform to sharpen, Histogramtransform to darken background, CurvesTrasnformation, DynamicCrop
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Notes:
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