Hemisphere:  Northern  ·  Constellation: Camelopardalis (Cam)  ·  Contains:  The star νCas
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Shelob's Lair, 



    
        

            Paul Hancock
Shelob's Lair
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Shelob's Lair

Getting plate-solving status, please wait...
Shelob's Lair, 



    
        

            Paul Hancock
Shelob's Lair
Powered byPixInsight

Shelob's Lair

Imaging Telescopes Or Lenses
William Optics Star 71 II WO Star 71
Imaging Cameras
ZWO 183MM PRO
Mounts
iOptron CEM40
Filters
ZWO SII 7nm 1.25" ZWO SII · ZWO OIII 7nm 1.25" ZWO OIII · ZWO Ha 7nm 1.25" ZWO Ha
Software
SGP
Guiding Cameras
ZWO 290 Mini

Acquisition details

Dates:
Oct. 2, 2020 ·  Oct. 3, 2020
Frames:
ZWO Ha 7nm 1.25" ZWO Ha: 75x300" (6h 15') (gain: 111.00) -15C bin 1x1
ZWO OIII 7nm 1.25" ZWO OIII: 48x300" (4h) (gain: 111.00) -15C bin 1x1
ZWO SII 7nm 1.25" ZWO SII: 32x300" (2h 40') (gain: 111.00) -15C bin 1x1
Integration:
12h 55'
Darks:
40
Flats:
20
Flat darks:
20
Avg. Moon age:
15.76 days
Avg. Moon phase:
98.66%

RA center: 07h57m07s.2

DEC center: +70°0101

Pixel scale: 8.939 arcsec/pixel

Orientation: 254.525 degrees

Field radius: 4.018 degrees

Resolution: 2766x1680

Data source: Backyard

Description

Shelob lies in wait, anticipating the harmonious twang as her next meal becomes entrapped in her web. You can see the remains of a small scorpion to her left, a previous meal.

The Tarantula nebula is a massive HII region within the Large Magellanic Cloud. The weather was briefly good here and the seeing was exceptional. This is 6 hours of SHO data captured from my backyard. Hopefully the weather will clear again so I can continue to capture photons of this beautiful region of space.

Comments

Revisions

  • Shelob's Lair, 



    
        

            Paul Hancock
    Original
  • Shelob's Lair, 



    
        

            Paul Hancock
    B
  • Shelob's Lair, 



    
        

            Paul Hancock
    C
  • Shelob's Lair, 



    
        

            Paul Hancock
    D
  • Shelob's Lair, 



    
        

            Paul Hancock
    E
  • Shelob's Lair, 



    
        

            Paul Hancock
    F
  • Final
    Shelob's Lair, 



    
        

            Paul Hancock
    G

B

Description: I accidently nuked the star colour in the original, so I've brought it back.

Uploaded: ...

C

Description: Reframed.

Uploaded: ...

D

Description: As in C but tried to be more careful with the tone mapping to reduce noise and maintain balance.

Uploaded: ...

E

Description: Okay, so this is an experiment. I've used the full 12 hours of SHO data to complete the tone mapping. But I sacrificed quantity for quality and used only the best 2 hours of Ha subs for a luminance layer. I think the sharpness has definitely improved. I'm hoping the next two nights are clear so I can now just concentrate on amassing Ha data to give me a better pool for the sharpest luminance data.

Uploaded: ...

F

Description: Now with 5.5 hours of low FWHM (for my crappy skies) ha and oiii luminance.

Uploaded: ...

G

Description: Nope, way too excited on the saturation! So here it is more subdued.

Uploaded: ...

Sky plot

Sky plot

Histogram

Shelob's Lair, 



    
        

            Paul Hancock