IC 1340
Common Name: Bat Nebula
Also Known as: NGC 6960, Western Veil Nebula, Sharpless 103 (Sh2-103), Cygnus Loop, Cirrus Nebula, Filamentary Nebula, Caldwell 33 & 34.
Object Type: Supernova Remnant
Constellation: Cygnus
Distance from Earth: 2,400 light years
Apparent Magnitude: 7.0
Coordinates: RA 20H 45M 38S DEC 30 deg 42 min 30 sec
Actual Size: 100 light years in diameter
Apparent Dimensions: 3 degrees
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Environmental Data
Date: July 28, 2021 Start Time: 9:45PM End Time: 2:13AM SQM: 19.35
Moon Age: 19.2 days Moonrise: 10:59PM Moon Illumination: 79.8%
Temperature: 76 degrees F Humidity: 60% Dew Point: 61 degrees F
Location: Westport, Massachusetts 02790 Sky Condition: Clear
Comment: Rebalanced scopes. PHD2 calibration good. PHD2 Guiding assistant run and updated guiding parameters
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Imaging Scope Data
Mount: iOptron CEM120 Camera: ZWO ASI071 OSC Focuser: Optec DirectSync SVX30
Telescope: Stellarvue SV90 refractor Focal Length: 504mm
Focal Reducer/Field Flattener: 0.8 Filter: IDAS NB-1
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 1.33 Platesolve: Good on 2nd attempt
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Guide Scope Data
Telescope: Stellarvue SVX130 refractor refractor Camera: Lodestar X2 Focuser: Optec DirectSync SV35
Dew Heater: Kendrick dew strip Software: PHD2 Exposure: 1 sec Binning: 1x1 Tracking Result: between 1.27 and 2.24 arc-seconds RMS
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Images Taken
Number of light frames: 42 Duration: 4 minutes Gain: Unity Gain
Camera Temperature: 0 degrees C Binning: 1x1 F-Stop: 5.6
Total Integration Time: 2.8 hours
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Number of flat frames: 50 Duration: 0.01 seconds Gain: Unity Gai
Camera Temperature: 0 degrees C Binning: 1x1 F-Stop: 5.6
Flat Field Illumination: All-Pro 'Spike-a-Flat Field standard' illuminated panel
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Number of Dark frames: 50 (from library) Duration: 4 minutes Gain: Unity Gai
Camera Temperature: 0 degrees C Binning: 1x1 F-Stop: 5.6
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Number of Bias frames: 50 (from library) Duration: 0.001 seconds Gain: Unity Gai
Camera Temperature: 0 degrees C Binning: 1x1 F-Stop: 5.6
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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, AutomaticBackgroundExtraction, ImageSolve, SpectroPhotometricColorCalibration, BlurXTerminator, NoiseXterminator, StarXterminator
Non-Linear:
Stars only image: Histrogram transformation:
Starless image: GeneralizedHyperbolicStretch script, MultiscaleLinearTransform for sharpening, CurvesTransformation,
Stars only and Starless images merged using Pixelmath.
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Notes:
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