NGC 6885
Also Known as: Caldwell 37
Object Type: Open Cluster
Constellation: Vulpecula
Distance from Earth: 1,950 light years
Apparent Magnitude: 8.1
Coordinates: RA 20H 12M 0S DEC 26 deg 29 min 0 sec
Actual Size: 4 light years
Apparent Dimensions: 7 arc-minutes x 18 arc-minutes
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Environmental Data
Date: August 13, 2024 Start Time: 8:54PM End Time: 10:54PM SQM: 18.17
Moon Age: 9 days Moonset: 11:53PM Moon Illumination: 66.2%
Temperature: 74 degrees F Humidity: 87% Dew Point: 70 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Mirky
Comment: The night started with a thin haze, which got worse as the night progressed. By 10:30PM I could only make out a few bright stars.
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Imaging Scope Data
Mount: iOptron CEM120 Camera: ZWO ASI2600 OSC Focuser: Optec DirectSync SV35
Telescope: Stellarvue SVX130 refractor Focal Length: 910mm
Focal Reducer/Field Flattener: Field Flattener Filter: IDAS NB-1
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 1.69 Platesolve: Success on 3rd 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: 1-2 sec Binning: 1x1 Tracking Result: 0.73 arc-seconds RMS
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Images Taken
Number of light frames: 57 Duration: 2 minutes Gain: 100
Camera Temperature: 0 degrees C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 1.9 hours
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Number of flat frames: 51 Duration: 0.25 seconds Gain: 100
Camera Temperature: 0 degrees C Binning: 1x1 F-Stop: 7.0
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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: GradientCorrection, SpectroPhotometricColorCalibration, BlurXterminator, NoiseXterminator
Non-Linear: HistogramTransformation, CurvesTransformation
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Notes:
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