Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  41 the01 Ori  ·  42 c Ori  ·  43 the02 Ori  ·  44 iot Ori  ·  45 Ori  ·  De Mairan's nebula  ·  Great Orion Nebula  ·  Hatysa  ·  Lower Sword  ·  M 42  ·  M 43  ·  M43  ·  Mairan's Nebula  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  NGC 1982  ·  NGC1973  ·  NGC1975  ·  NGC1977  ·  NGC1980  ·  NGC1981  ·  Orion Nebula  ·  Sh2-279  ·  Sh2-281  ·  The star 42Ori  ·  The star 45Ori  ·  And 6 more.
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Part II -> First light with my ASI2600 mc camera - (M42 and running man), 



    
        

            Ian Dixon
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Part II -> First light with my ASI2600 mc camera - (M42 and running man)

Imaging telescopes or lenses: Stellarvue 70 mm f6 apo triplet refractor

Imaging cameras: ZWO ASI2600MC

Mounts: SkyWatcher NEQ6 PRO

Guiding telescopes or lenses: tasco 60mm/360 mm doublet

Guiding cameras: ZWO ASI290MM mini

Focal reducers: Stellarvue SFFR70APO

Software: PixInsight 1.8.8 Ripley PixInsight  ·  SkySafari 6 Pro  ·  Aries Productions Astro Pixel Processor APP  ·  Adobe Photoshop CC 2020

Accessory: ZWO ASIair Pro  ·  Cabela's Insulated Overalls made for ice fishing  ·  Home Made Fleece lined mitts


Dates:Feb. 15, 2021

Frames: 40x150" ISO0 (gain: 0.00) -20C bin 1x1

Integration: 1.7 hours

Darks: ~40

Avg. Moon age: 3.55 days

Avg. Moon phase: 13.62%

Bortle Dark-Sky Scale: 3.00

Mean FWHM: 2.70

Temperature: -21.00


Astrometry.net job: 4230643

RA center: 5h 35' 9"

DEC center: -5° 21' 42"

Pixel scale: 2.299 arcsec/pixel

Orientation: -90.225 degrees

Field radius: 1.314 degrees


Resolution: 3440x2260

Locations: Glenlea observatory, Winnipeg, Manitoba, Canada

Data source: Traveller

Description

First light data for my 2600 mc camera on M42 and running man. This is a reprocess with addition of individual stacked lights, with matching darks, no flats.

My (new to me) workflow details:

Camera set at "0" gain.

1. Astropixel processor stacking of all lights, with matching darks, no flats.

-stacked 10 x 30 sec
-stacked 10 x 60 sec
-stacked 10 x 180 sec
-stacked 10 x 300 sec data (used this as a reference for registration).

2. Auto stretch in Pixinsight to see whats up. I was surprised how nice the 30 second stacks were... lots of data!

3. I put together these images in PI using a manual stretch and HDRComposition which involves registering all to the 300 sec master. I saved all the registered files alone.

4. Generated the combined image... core looks OK.

5. Photometric colour calibration tool in PI was used to achieve the corrected star colours.

5. Then went back in, to reduce the greens with PI (SCNR in PI).

6. Wasn't happy with the noise levels, so went back in and masked the nebula, and then carried out a detailed noise reduction using a mask. The tool is Multiscale Linear Transform... its really nice.
I used settings recommended by a friend. They can also be found in Shawn Neilson's video...

https://www.youtube.com/watch?v=05Rx6Fv6eOw

7. I cropped in PI to bring the DSO front and centre. Dynamic crop tool.

Notes: Many of my revisions were lost, my fault I think, but some were very kindly revived somehow by Salvatore, thanks so much!

Thanks for looking!

Comments

Revisions

  • Part II -> First light with my ASI2600 mc camera - (M42 and running man), 



    
        

            Ian Dixon
    Original
  • Part II -> First light with my ASI2600 mc camera - (M42 and running man), 



    
        

            Ian Dixon
    B
  • Final
    Part II -> First light with my ASI2600 mc camera - (M42 and running man), 



    
        

            Ian Dixon
    K

B

Description: Fixed the blue problem, and also calibrated the star colour in PI.

Uploaded: ...

K

Description: In this iteration I continued to plumb the depths of Pixinsight by learning how to use Median Linear Transform, creating a mask for the nebula, and incorporating some useful setttings for noise reduction. Then I cropped the image for a closer look. Any feedback is welcome, thank you.

Uploaded: ...

Sky plot

Sky plot

Histogram

Part II -> First light with my ASI2600 mc camera - (M42 and running man), 



    
        

            Ian Dixon