Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Cigar Galaxy  ·  M 82  ·  NGC 3034
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M82: The Cigar Galaxy L((R+Ha)GB), 



    
        

            Ruediger
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M82: The Cigar Galaxy L((R+Ha)GB)

Getting plate-solving status, please wait...
M82: The Cigar Galaxy L((R+Ha)GB), 



    
        

            Ruediger
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M82: The Cigar Galaxy L((R+Ha)GB)

Acquisition details

Dates:
Feb. 14, 2022
Frames:
Baader H-alpha Ultra-Narrowband 3.5nm (CMOS-Optimized): 13×600(2h 10′) (gain: 100.00) -15°C bin 2×2
Baader Planetarium 2" Filter LRGB: 96×300(8h) (gain: 0.00) -15°C bin 2×2
Integration:
10h 10′
Darks:
30
Flats:
15
Flat darks:
15
Avg. Moon age:
12.68 days
Avg. Moon phase:
95.14%
Bortle Dark-Sky Scale:
5.00
Mean SQM:
18.20
Mean FWHM:
4.20
Temperature:
-2.00

RA center: 09h55m50s.356

DEC center: +69°4030.30

Pixel scale: 0.768 arcsec/pixel

Orientation: -90.278 degrees

Field radius: 0.293 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 2200x1643

File size: 15.2 MB

Locations: Balcony observatory, Ansbach, Bavaria, Germany

Data source: Backyard

Description

Hello Friends,

as we all suffer from this disgusting bad weather period, I could not resist to shoot through clouds and by bright moon light. The addiction was too strong to resist. I had to...

I have tried to collect data during three nights, but I had throw away more than 50% of the subs. Only the brightest stars were visible. Please see the revision B showing an image of the telescope's surveillance cam with all the clouds and bright light of the moon. But I had no option, since M82 is only visible for a limited period of the year, since the house is blocking the north view.

Well, but never the less, I could collect some usable photons pf M82. Again my goal was to show the Ha components, but not to overdo it. This is very tempting and hard to resist. Also the natural color of the star should be preserved. Actually, even on the RGB composite, the Ha part was very dominant. Adding the Lum channel made it even worse so I had decided to apply Lum only to the core. I ended up with a version, with which I could be satisfied.

I hope, you will enjoy it too!

Rüdiger

Comments

Revisions

  • Final
    M82: The Cigar Galaxy L((R+Ha)GB), 



    
        

            Ruediger
    Original
  • M82: The Cigar Galaxy L((R+Ha)GB), 



    
        

            Ruediger
    B

B

Title: Survailance Cam: Bad conditions - clouds and bright moon light (no IR)

Description: This image show the tough conditions under which the data was acquired. Clouds and so bright moon light, it looks almost like day.

Uploaded: ...

Sky plot

Sky plot

Histogram

M82: The Cigar Galaxy L((R+Ha)GB), 



    
        

            Ruediger