NGC 457
Common Name: Owl Cluster
Also Known as: Caldwell 13, Dragonfly Cluster, E.T. Cluster, Kachina Doll Cluster, Phi Cassiopeiae Cluster.
Object Type: Open Cluster
Constellation: Cassiopeia
Distance from Earth: 7,922 Light years
Apparent Magnitude: 6.4
Coordinates: RA 01H 19M 32.6S DEC 58 deg 17 min 27 sec
Actual Size: 30 light years in diameter
Apparent Dimensions: 20 arc-minutes
--------------------------------------------------------------------------
Environmental Data
Date: January 4, 2022 Start Time: 6:21PM End Time: 10:47PM SQM: 19.87
Moon Age: 2.3 days Moonset: 6:42PM Moon Illumination: 6.0%
Temperature: 24 degrees F Humidity: 68% Dew Point: 16 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Mirky
Comment: Clouds forecast
--------------------------------------------------------------------------
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: Manual 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 2.03 Platesolve: Good on 5th attempt
--------------------------------------------------------------------------
Guide Scope Data
Telescope: Stellarvue SVX130 refractor Camera: ZWO ASI290 Focuser: Optec DirectSync SV35
Dew Heater: Kendrick dew strip Software: PHD2 Exposure: 1 sec Binning: 1x1 Tracking Result: 0.5 arc-seconds RMS
--------------------------------------------------------------------------
Images Taken
Number of light frames: 225 Duration: 1 minute Gain: 100
Camera Temperature: -20 degrees C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 3.75 hours
--------------------------------------------------------------------------
Number of flat frames: 50 Duration: 0.13 Gain: 100
Camera Temperature: -20 degrees C Binning: 1x1 F-Stop: 7.0
Flat Field Illumination: All-Pro 'Spike-a-Flat Field standard' illuminated panel
--------------------------------------------------------------------------
Number of Dark frames: 50 (from library) Duration: 1 minute Gain: 100
Camera Temperature: -20 degrees C Binning: 1x1 F-Stop: 7.0
--------------------------------------------------------------------------
Number of Bias frames: 50 (from library) Duration: 0.001 seconds Gain: 100
Camera Temperature: -20 degrees C Binning: 1x1 F-Stop: 7.0
--------------------------------------------------------------------------
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, AutomaticBackgroundExtraction, ImageSolve, SpectroPhotometricColorCalibration, BlurXTerminator, NoiseXTerminator
Non-Linear: HistogramTransformation
--------------------------------------------------------------------------
Notes: Clouds at 11PM.
Click Below Image for Full Size:
Click to Return to Home Page