NGC 185
Also Known as: Caldwell 18
Object Type: Dwarf Spheroidal Galaxy
Constellation: Cassiopeia
Distance from Earth: 2.05 million light years
Apparent Magnitude: 9.2
Coordinates: RA 00H 38M 57.97S DEC 48deg 20min 14.56sec
Actual Size: 10,000 light years in diameter
Apparent Dimensions: 11.7 arc-minutes x 10.9 arc-minutes
--------------------------------------------------------------------------
Environmental Data
Date: October 13, 2021 Start Time: 7:22PM End Time: 2:07AM SQM: 18.53
Moon Age: 8.3 days Moon Culmination: 7:35PM Moon Illumination: 59.2%
Temperature: 63 degrees F Humidity: 88% Dew Point: 59 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Partly cloudy
Comment: Polar aligned mount previous night. PHD2 calibration good. PHD2 Guiding Assistant utilized to update guiding parameters.
--------------------------------------------------------------------------
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 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 3.46 Platesolve: Good on 3rd attempt
--------------------------------------------------------------------------
Guide Scope Data
Telescope: Stellarvue SVX130 refractor Camera: Lodestar 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: 43 usable Duration: 2 minutes Gain: 100
Camera Temperature: -10 degrees C Binning: 1x1 F-Stop: 10.0
Total Integration Time: 1.43 hours
--------------------------------------------------------------------------
Number of flat frames: 50 Duration: 0.2 Gain: 100
Camera Temperature: -10 degrees C Binning: 1x1 F-Stop: 10.0
Flat Field Illumination: All-Pro 'Spike-a-Flat Field standard' illuminated panel
--------------------------------------------------------------------------
Number of Dark frames: 50 (from library) Duration: 2 minutes Gain: 100
Camera Temperature: -10 degrees C Binning: 1x1 F-Stop: 10.0
--------------------------------------------------------------------------
Number of Bias frames: 50 (from library) Duration: 0.001 seconds Gain: 100
Camera Temperature: -10 degrees C Binning: 1x1 F-Stop: 10.0
--------------------------------------------------------------------------
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: DynamicBackgroundExtraction, ImageSolve, SpectroPhotometricColorCalibration, BlurXTerminator, NoiseXTerminator
Non-Linear: GeneralizedHyperbolicStretch script, CurvesTransformation, MultiScaleLinearTransform for sharpening, CurvesTransformation, StarReduction script.
--------------------------------------------------------------------------
Notes: After imaging found that scope balance was way off. Rebalanced.
Click Below Image for Full Size:
Click to Return to Home Page