Messier 2 (M2)
Also Known as: NGC 7089, GC 4678, Bode 70
Object Type: Globular Cluster
Constellation: Aquarius
Distance from Earth: 37,500 Light years
Apparent Magnitude: 6.3
Coordinates: RA 21H 33M 27.02S DEC -00 deg 49 min 23.7 sec
Actual Size: 175 light years in diameter. Dense central region is 0.34 arc minutes across (3.7 light years).
Apparent Dimensions: 16 arc minutes.
--------------------------------------------------------------------------
Environmental Data
Date: September 3, 2023 Start Time: 8:09PM End Time: 3:05 AM SQM: 16.37
Moon Age: 18.5 days Moonrise: 9:14PM Moon Illumination: 85.5%
Temperature: 76 degrees F Humidity: 77% Dew Point: 69 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Clear
Comment:
--------------------------------------------------------------------------
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 3.57 Platesolve: Good on 3rd attempt
--------------------------------------------------------------------------
Guide Scope Data
Telescope: Stellarvue SV90 refractor Camera: ZWO ASI290 Focuser: Optec DirectSync SVX30
Dew Heater: Kendrick dew strip Software: PHD2 Exposure: 2 sec Binning: 1x1 Tracking Result: 0.71 arc-seconds RMS
--------------------------------------------------------------------------
Images Taken
Number of light frames: 181 Duration: 2 minutes Gain: 100
Camera Temperature: -10 degrees C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 6.03 hours
--------------------------------------------------------------------------
Number of flat frames: 53 Duration: 0.05 seconds Gain: 100
Camera Temperature: -10 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: 2 minutes Gain: 100
Camera Temperature: -10 degrees C Binning: 1x1 F-Stop: 7.0
--------------------------------------------------------------------------
Number of Bias frames: 50 (from library) Duration: 0.001 seconds Gain: 100
Camera Temperature: -10 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, DynamicCrop
Linear - Background extraction, Color correction, deconvolution, noise reduction: DynamicBackgroundExtraction, ImageSolve, SpectroPhotometricColorCalibration, BlurXTerminator, NoiseXTerminator
Non-Linear: GeneralizedHyperbolicStretch script, MultiscaleLinearTransform for sharpening, CurvesTransformation, ColorSaturation, MultiscaleLinearTransform for sharpening.
--------------------------------------------------------------------------
Notes: Moon bright
Click Below Image for Full Size:
Click to Return to Home Page