Messier 84 (M84) and Messier 86 (M86) Galaxies
M84 Also Known as: NGC 4374
M86 Also Known as: NGC 4406
M84 Object Type: Giant Elliptical or Lenticular Galaxy
M86 Object Type: Elliptical or Lenticular Galaxy
Constellation: Virgo
M84 Distance from Earth: 54.9 million light years
M86 Distance from Earth: 52 million light years
M84 Apparent Magnitude: 9.1
M86 Apparent Magnitude: 9.8
M84 Coordinates: RA 12H 25M 03.7433S DEC 12deg 53min 13.139sec
M86 Coordinates: RA 12H 28M 11.7S DEC 12deg 56min 46sec
M84 Actual Size:: 110,000 light years in diameter... M86 Actual Size:: 130,000 light years in diameter.
M84 Apparent Dimensions:: 6.5 arc-minutes x 5.6 arc-minutes ... M86 Apparent Dimensions:: 8.9 arc-minutes x 5.8 arc-minutes
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Environmental Data
Date: May 24, 2021 Start Time: 9:35PM End Time: 1:09AM SQM: 19.68
Moon Age: 13.0 days Moonset: 4:06AM Moon Illumination: 96.5%
Temperature: 62 degrees F Humidity: 29% Dew Point: - degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Clear
Comment:
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Imaging Scope Data
Mount: iOptron CEM120 Camera: ZWO ASI071 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: None Power Control: None Dew Heater: Kendrick dew strip
Imaging Software
Mount: iOptron Commander Focuser: Optec FocusLynx Commander
Imaging: Sequence Generator Pro Platesolve: ASTAP Rotator/Control:
Imaging Status
Imaging Software: Sequence Generated Focus HFR 1.92 Platesolve: Good on 3rd attempt
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Guide Scope Data
Telescope: Stellarvue SV90 Camera: Lodestar X2 Focuser: Optec DirectSync SVX30
Dew Heater: Kendrick dew strip Software: PHD2 Exposure: 2 sec Binning: 1x1 Tracking Result: 0.6 to 0.9 arc-seconds RMS
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Images Taken
Number of light frames: 94 Duration: 2 minutes Gain: Unity Gain
Camera Temperature: -10 degrees C Binning: 1x1 F-Stop: 7.0
Total Integration Time: 3.13 hours
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Number of flat frames: 50 Duration: 0.05 seconds Gain: Unity Gain
Camera Temperature: -10 degrees C Binning: 1x1 F-Stop: 7.0
Flat Field Illumination: All-Pro 'Spike-a-Flat Field standard' illuminated panel
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Number of Dark frames: 50 (from library) Duration: 2 minutes Gain: Unity Gain
Camera Temperature: -10 degrees C Binning: 1x1 F-Stop: 7.0
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Number of Bias frames: 50 (from library) Duration: 0.001 seconds Gain: Unity Gain
Camera Temperature: -10 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: DynamicCrop, DynamicBackgroundExtraction, ImageSolve, SpectroPhotometricColorCalibration, BlurXTerminator, NoiseXterminator
Non-Linear: GeneralizedHyperbolicStretch script, CurvesTransformation, MultiscaleLinearTransform for sharpening.
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Notes:
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