Messier 48 (M48)
Also Known as: NGC 2548, Collinder 179
Object Type: Open Cluster
Constellation: Hydra
Distance from Earth: 1,500 Light years
Apparent Magnitude: 5.5
Coordinates: RA 08H 13.7M 0 DEC -05deg 45min 0sec
Actual Size: 20 light years in diameter
Apparent Dimensions: 32 arc-minutes
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Environmental Data
Date: February 25, 2024 Start Time: 6:38PM End Time: 9:33PM SQM: 19.28
Moon Age: 15.4 days Moonrise: 6:42PM Moon Illumination: 99.5%
Temperature: 31.5 degrees F Humidity: 68% Dew Point: 22.1 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Clear
Comment:
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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 rotator 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 HFR 2.85 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: 1 sec Binning: 1x1 Tracking Result: 0.75
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Images Taken
Number of light frames: 82 Duration: 2 minutes Gain: 100
Camera Temperature: -20C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 2.73 hours
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Number of flat frames: 50 Duration: 0.05 seconds Gain: 100
Camera Temperature: -20C Binning: 1x1 F-Stop: 7.0
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Number of Dark frames: 50 Duration: 2 minutes Gain: 100
Camera Temperature: -20C Binning: 1x1 F-Stop: 7.0
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Number of Bias frames: 50 Duration: 0.001 Gain: 100
Camera Temperature: -20C 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: DynamicBackgroundExtraction, ImageSolve, SpectroPhotometricColorCalibration, BlurXTerminator, NoiseXterminator
Non-Linear: HistogramTransformation, CurvesTransformation, MultiScaleLinearTransform to sharpen.
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Notes:
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