Messier 67 (M67)
Common Name: King Cobra Cluster
Also Known as: NGC 2682, Collinder 204
Object Type: Open Cluster
Constellation: Cancer
Distance from Earth: 2,610 light years
Apparent Magnitude: 6.1
Coordinates: RA 08H 51.4M 0S DEC 11 deg 49 min 0 sec
Actual Size: 20,000 light years in diameter
Apparent Dimensions: 30 arc-minutes
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Environmental Data
Date: February 21, 2021 Start Time: 6:47PM End Time: 8:57PM SQM: 15.11
Moon Age: 9.4 days Moonset: 2:22AM Moon Illumination: 71.0%
Temperature: 36 degrees F Humidity: 42% Dew Point: 15 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Clear
Comment: Clouds forecast for 11PM so imaging something quick.
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Imaging Scope Data
Mount: iOptron CEM120 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: None Dew Heater: Kendrick dew strip
Imaging Software
Mount: iOptron Commander Focuser: Optec FocusLynx Commander
Imaging: Sequence Generator Pro Platesolve: Platesolve2 Rotator/Control: Pegasus Unity Platform
Imaging Status
Imaging Software: Sequence Generated Focus HFR 1.85 Platesolve: Success on 2nd attempt
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Guide Scope Data
Telescope: Stellarvue SV90 refractor Camera: Lodestar X2 Focuser: Optec DirectSync SVX30
Dew Heater: Kendrick dew strip Software: PHD2 Exposure: - sec Binning: 1x1 Tracking Result: .
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Images Taken
Number of light frames: 132 Duration: 1 minute Gain: Unity Gain
Camera Temperature: -20 degrees C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 2.2 hours
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Number of flat frames: 50 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: 1 minute 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, CurvesTransformation, MultiscaleLinearTransform for sharpening.
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Notes:
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