Hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  12 Mon  ·  12.40  ·  12.69  ·  13 Mon  ·  130 Elektra  ·  14 Mon  ·  15 S Mon  ·  16 Mon  ·  17 Mon  ·  345 Tercidina  ·  B37  ·  B38  ·  B39  ·  Christmas Tree Cluster  ·  Hubble's variable neb  ·  IC 2169  ·  IC 446  ·  IC 447  ·  IC 448  ·  Monoceros  ·  NGC 2236  ·  NGC 2237  ·  NGC 2238  ·  NGC 2239  ·  NGC 2244  ·  NGC 2245  ·  NGC 2246  ·  NGC 2247  ·  NGC 2251  ·  NGC 2252  ·  And 96 more.
Getting plate-solving status, please wait...
NGC 2244 - The Rosette Nebula & Friends, 



    
        

            Steve Ludwig
Powered byPixInsight

NGC 2244 - The Rosette Nebula & Friends

Getting plate-solving status, please wait...
NGC 2244 - The Rosette Nebula & Friends, 



    
        

            Steve Ludwig
Powered byPixInsight

NGC 2244 - The Rosette Nebula & Friends

Acquisition details

Dates:
March 5, 2021
Frames:
59×240(3h 56′)
Integration:
3h 56′
Avg. Moon age:
21.54 days
Avg. Moon phase:
56.49%

RA center: 06h36m55s.85

DEC center: +07°2921.5

Pixel scale: 8.293 arcsec/pixel

Orientation: 92.714 degrees

Field radius: 5.854 degrees

More info:Open 

Resolution: 4440x2478

File size: 4.8 MB

Data source: Backyard

Description

Equipment

- Main camera: Nikon D3300 (unmodified)

- Lens: Samyang 135mm f2 @ f2

- Mount: Skywatcher EQ6-R Pro

- Guide scope: Orion AC 50/162 Deluxe Mini

- Guide camera: ZWO ASI 290MC

Acquisition

- 59 lights x 240 s = 3 h 56 min total exposure time

- no dark, flat, bias frames

- no filters

- ISO 100

- Bortle 4 zone

Processing

-> lights stacked in DSS

-> median kappa sigma clipping method

-> unmodified TIF opened in PixInsight

-> STF stretch

-> dynamic background extraction

-> background neutralization

-> color calibration

-> histogram transformation

-> starnet to separate background from stars

background

-> SCNR green to remove greenish noise

-> curves transformation to increase saturation

-> ACDNR to reduce noise

stars

-> SCNR green to remove greenish noise

-> curves transformation to increase saturation

-> pixel math to recombine background & stars

-> multiscale linear transform noise reduction to remove/reduce background noise and artifacts around bright stars

-> final curves & histogram transformations to adjust brightness and saturation

-> dynamic crop

-> resample 75%

-> saved as jpg

Comments

Revisions

  • NGC 2244 - The Rosette Nebula & Friends, 



    
        

            Steve Ludwig
    Original
  • NGC 2244 - The Rosette Nebula & Friends, 



    
        

            Steve Ludwig
    B
  • Final
    NGC 2244 - The Rosette Nebula & Friends, 



    
        

            Steve Ludwig
    C

B

Description: In this revision, I removed the reddish background tint by doing another background neutralization followed by SCNR (green). I also raised the black point a bit and increased saturation using the histogram/curves transformation processes.

Uploaded: ...

C

Description: In this revision, I reduced background saturation in darker areas a bit. I think it looks a bit more natural like this.

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC 2244 - The Rosette Nebula & Friends, 



    
        

            Steve Ludwig