Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  B144  ·  Sh2-101
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My 1st ventures into Tone Mapping. Sh2-170 and IC 410 old data., 



    
        

            Pat Rodgers
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My 1st ventures into Tone Mapping. Sh2-170 and IC 410 old data.

Imaging telescopes or lenses: Skywatcher 200p Newtonian

Imaging cameras: ATIK 314L+ Mono

Mounts: Sky-Watcher AZ-EQ6 GT

Guiding telescopes or lenses: Skywatcher ST80 Guidescope

Guiding cameras: ZWO ASI130MM

Software: Stark Labs PHD2 v2.4.1  ·  ASCOM +EQMOD  ·  Main Sequence Software SequenceGeneratorPro  ·  PixInsight version 1.8

Filters: Baader S2 1.25" 8nm  ·  Baader Ha 1.25" 7nm  ·  Baader OIII 1.25" 8.5nm  ·  Baader R 1.25'' CCD Filter  ·  Baader B 1.25'' CCD Filter  ·  Baader G 1.25'' CCD Filter

Accessory: Starlight Xpress SX USB Filter Wheel 7x1.25"


Dates:Nov. 12, 2017

Frames:
Baader Ha 1.25" 7nm: 30x600" -15C bin 1x1
Baader OIII 1.25" 8.5nm: 21x600" -15C bin 1x1
Baader S2 1.25" 8nm: 21x600" -15C bin 1x1

Integration: 12.0 hours

Darks: ~39

Flats: ~39

Bias: ~149

Avg. Moon age: 23.82 days

Avg. Moon phase: 32.63%

Bortle Dark-Sky Scale: 6.00

Temperature: 5.00


Astrometry.net job: 2170138

RA center: 19h 59' 37"

DEC center: +35° 21' 39"

Pixel scale: 1.330 arcsec/pixel

Orientation: -15.019 degrees

Field radius: 0.409 degrees


Resolution: 1838x1233

Locations: Un-stable Observatory, back garden., Huddersfield, West Yorkshire, United Kingdom

Data source: Unknown

Description

Followed the excellent tutorial found here:
http://www.arciereceleste.it/tutorial-pixinsight/cat-tutorial-eng/75-narrowband-color-composition-eng

Rev A: 1st attempt with SH2-170 Something went amiss! Oh well, try again.
Rev B: Got a better grip of the tutorial and made better star masks etc. Still found it hard to remove my large stars as it left the unsightly grey blobs everywhere. Did a harsh de-noise of the SII and OIII data. Happier with the result of my second attempt.
Rev C: Tried my old Tadpole data. Getting better.

Comments

Revisions

  • My 1st ventures into Tone Mapping. Sh2-170 and IC 410 old data., 



    
        

            Pat Rodgers
    Original
  • My 1st ventures into Tone Mapping. Sh2-170 and IC 410 old data., 



    
        

            Pat Rodgers
    B
  • My 1st ventures into Tone Mapping. Sh2-170 and IC 410 old data., 



    
        

            Pat Rodgers
    C
  • My 1st ventures into Tone Mapping. Sh2-170 and IC 410 old data., 



    
        

            Pat Rodgers
    D
  • My 1st ventures into Tone Mapping. Sh2-170 and IC 410 old data., 



    
        

            Pat Rodgers
    E
  • Final
    My 1st ventures into Tone Mapping. Sh2-170 and IC 410 old data., 



    
        

            Pat Rodgers
    F

B

Description: Getting better.

Uploaded: ...

C

Description: Improving still lots to get right, can see some light down that tunnel :-)

Uploaded: ...

D

Description: Another try at tone mapping. I like the Tulip but not how the background has turned out, given there's 21 hours of data in it.

Uploaded: ...

E

Description: Another attempt at tone mapping the Tulip. Got the Bow shock wave to appear at the right edge. It's caused by a known black hole.

Uploaded: ...

F

Description: Had another go at tonemapping. Still struggling to remove the 5 larger stars, but did better at clone stamping them out and a large blur afterwards. The blurring of the noisy SII and OIII has helped produce a smoother background than previous efforts.

Uploaded: ...

Sky plot

Sky plot

Histogram

My 1st ventures into Tone Mapping. Sh2-170 and IC 410 old data., 



    
        

            Pat Rodgers

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