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Contains:  Triangulum galaxy, M 33, NGC 598
Getting plate-solving status, please wait...
M33 at 135mm, 





    
        

            Ben

M33 at 135mm

Technical card

Imaging telescope or lens:Samyang 135mm f/2

Imaging camera:ZWO ASI183MM Pro

Mount:Sky-Watcher AZ-GTi

Guiding telescope or lens:No name 30 mm guidescope

Guiding camera:datyson T7c

Software:PixInsight 1.8

Filters:Baader B 1.25'' FilterBaader G 1.25'' FilterBaader R 1.25'' Filter

Resolution: 2349x1590

Dates:Oct. 25, 2019

Frames:
Baader B 1.25'' Filter: 31x180" (gain: 115.00) -15C
Baader G 1.25'' Filter: 31x180" (gain: 115.00) -15C
Baader R 1.25'' Filter: 35x180" (gain: 115.00) -15C

Integration: 4.8 hours

Darks: ~40

Flats: ~40

Bias: ~40

Avg. Moon age: 26.50 days

Avg. Moon phase: 10.04%

Bortle Dark-Sky Scale: 6.00

Astrometry.net job: 3019287

RA center: 23.477 degrees

DEC center: 30.666 degrees

Pixel scale: 3.821 arcsec/pixel

Orientation: 0.817 degrees

Field radius: 1.506 degrees

Locations: Backyard, Saint-Orens de Gameville, France

Data source: Backyard

Description

Lens opened at f2 this time. Lot of signal but lot of vignetting too. I had forgotten the big difference of vignetting between f2 and f2.8... It was not completely corrected by the flats. I think the flats were not the best though. I will do better next time.

I also fighted several gradients. We can see remaining color casts.

Anyway it gives an idea of what could be done on this target. A dark site would help :-).

Version B shows a widefield version.

CS

Comments

Author

netspoon
Ben
License: None (All rights reserved)
1641
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Revisions

  • Final
    M33 at 135mm, 





    
        

            Ben
    Original
  • M33 at 135mm, 





    
        

            Ben
    B

B

Widefield

Sky plot

Sky plot

Histogram

M33 at 135mm, 





    
        

            Ben