Open Cluster NGC 7160
Summary:
This was simply a target I could shoot waiting for my main targets to clear my roof.
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| NGC 7160 |
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| NGC 7160 Annotated View |
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| NGC 7160 (RGB Stars Only) |
About NGC 7160
"NGC 7160 is an open cluster in the constellation Cepheus. It was discovered by William Herschel on November 9, 1789. The cluster was also observed by John Herschel on October 7, 1829."
- Constellation: Cepheus
- RA: 21h 53m 40s
- Dec: +62° 36′ 12″
- Distance: 2,570 ly
- Magnitude: ~6.1
- Width: 13'
Capturing NGC 7160
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Light Bandwidths:
R, G, B
Dates Captured:
June 5, 2021
June 9, 2021
June 10, 2021
GUIDING
- excellent, average ~0.7 RMS
IMAGE CALIBRATION (PixInsight)
Weighted Batch Preprocessing
- Lights, Darks, Flat Darks, Bias
- Cosmetic Correction
- Stats
- R (31) 60 second subs
- G (20) 60 second subs
- B (30) 60 second subs
NON LINEAR PROCESSING (PixInsight)
1. Dynamic Crop
2. Dynamic Background Extraction
3. Linear Fit was applied to G & B using R as base.
4. Channels were combined with ChannelCombination
4. Photometric Color Calibration failed to download so used: AutoColor script
5. Linear Noise Reduction using MultiscaleLinearTransform
6. Another Linear Noise Reduction using MultiscaleLinearTransform
LINEAR PROCESSING (PixInsight)
1. Histogram Stretch
2. Automatic Backgtound Extraction
3. Starnet++ to remove the stars and create a image of the stars
4. SCNR
5. (Starless Image) Used Curves to reduce the background skyglow/light pollution.
6. (Starless Image) TGV Denoise to remove more noise
7. (Stars Image) Increased saturation of the stars using ColorSaturation
8. Made image ready for the web using ICCProfileTransformation
EQUIPMENT
Optics: SGO 6" f/4 Imaging Newtonian @ 610mm FL
Baader 2" Coma Corrector
Camera: ZWO 294mm Pro (mono)
Filter Wheel: ZWO 8 position, .36" filters
Filters:
- R (Baader Planetarium LRGB 36 mm Round CCD Filter )
- G (Baader Planetarium LRGB 36 mm Round CCD Filter )
- B (Baader Planetarium LRGB 36 mm Round CCD Filter )
Mount:
- Losmandy GM811
- RAEXT EXTENSION DOVETAIL
- Losmandy 12" Tripod Extension
- Losmandy SADDLE PLATE FOR G-11 MOUNT
- Losmandy 16" UNIVERSAL DOVETAIL PLATE
- Losmandy LW Tripod
- Alt-AZ/Elevation Tensioning bolts and washers (Michael Herman's)
Guiding:
- ZWO 120mm mini (red filter)
- Agena 60mm f/4 Guide Scope with Helical Focuser
- PHD2 Software (2.6.9 Dev 5)
- Multistar option
- RA algorithm: Predictive PEC
- Dec algorithm: Resist Switch
- Used previous calibration done
- Dither: Small, every 3 frames
Acquisition:
- Sequence Generator Pro 3.2.660
- Flats & FlatDarks using NINA Flat Wizard
Light Bandwidths:
R, G, B
Dates Captured:
June 5, 2021
June 9, 2021
June 10, 2021
GUIDING
- excellent, average ~0.7 RMS
IMAGE CALIBRATION (PixInsight)
Weighted Batch Preprocessing
- Lights, Darks, Flat Darks, Bias
- Cosmetic Correction
- Stats
- R (31) 60 second subs
- G (20) 60 second subs
- B (30) 60 second subs
NON LINEAR PROCESSING (PixInsight)
1. Dynamic Crop
2. Dynamic Background Extraction
3. Linear Fit was applied to G & B using R as base.
4. Channels were combined with ChannelCombination
4. Photometric Color Calibration failed to download so used: AutoColor script
5. Linear Noise Reduction using MultiscaleLinearTransform
6. Another Linear Noise Reduction using MultiscaleLinearTransform
LINEAR PROCESSING (PixInsight)
1. Histogram Stretch
2. Automatic Backgtound Extraction
3. Starnet++ to remove the stars and create a image of the stars
4. SCNR
5. (Starless Image) Used Curves to reduce the background skyglow/light pollution.
6. (Starless Image) TGV Denoise to remove more noise
7. (Stars Image) Increased saturation of the stars using ColorSaturation
8. Made image ready for the web using ICCProfileTransformation
EQUIPMENT
Optics: SGO 6" f/4 Imaging Newtonian @ 610mm FL
Baader 2" Coma Corrector
Camera: ZWO 294mm Pro (mono)
Filter Wheel: ZWO 8 position, .36" filters
Filters:
- R (Baader Planetarium LRGB 36 mm Round CCD Filter )
- G (Baader Planetarium LRGB 36 mm Round CCD Filter )
- B (Baader Planetarium LRGB 36 mm Round CCD Filter )
Mount:
- Losmandy GM811
- RAEXT EXTENSION DOVETAIL
- Losmandy 12" Tripod Extension
- Losmandy SADDLE PLATE FOR G-11 MOUNT
- Losmandy 16" UNIVERSAL DOVETAIL PLATE
- Losmandy LW Tripod
- Alt-AZ/Elevation Tensioning bolts and washers (Michael Herman's)
Guiding:
- ZWO 120mm mini (red filter)
- Agena 60mm f/4 Guide Scope with Helical Focuser
- PHD2 Software (2.6.9 Dev 5)
- Multistar option
- RA algorithm: Predictive PEC
- Dec algorithm: Resist Switch
- Flats & FlatDarks using NINA Flat Wizard
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