Messier 11 (M11)
Common Name: Wild Duck
Also Known as: NGC 6705, Collinder 391, Mel 213
Object Type: Open Cluster
Constellation: Scutum
Distance from Earth: 6,120 light years
Apparent Magnitude: 6.3
Coordinates: RA 18H 51M 05S DEC -06 deg 16 min 12 sec
Actual Size: 14’ core - 4 light years radius with tidal radius - 95 light years
Apparent Dimensions: 22.8 arc minutes.
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Environmental Data
Date: August 15, 2022 Start Time: 9:21PM End Time: 12:28 AM SQM: 20.07
Moon Age: 18.4 days Moonrise: 9:58PM Moon Illumination: 86.2%
Temperature: 68 degrees F Humidity: 75% Dew Point: 59 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Partly cloudy
Comment: Imaging M11 and M26 in same night. Both low in the South, just above trees.
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Imaging Scope Data
Mount: iOptron CEM120 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 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 3.28 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: PPHD2 Exposure: 1.5 sec Binning: 1x1 Tracking Result: 0.95 arc-seconds RMS
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Images Taken
Number of light frames: 62 Duration: 1 minute Gain: 100
Camera Temperature: 0 degrees C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 1.03 hours
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Number of flat frames: 50 Duration: 0.15 seconds Gain: 100
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: 100
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: 100
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: AutomaticBackgroundExtraction, ImageSolve, SpectroPhotometricColorCalibration, BlurXTerminator
Non-Linear: GeneralizedHyperbolicStretch script, StarReduction script, MultiscaleLinearTransform for sharpening
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Notes:
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