Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)
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Lion Nebula (SH2-132) (SHO), 



    
        

            Andy  Brown
Lion Nebula (SH2-132) (SHO), 



    
        

            Andy  Brown

Lion Nebula (SH2-132) (SHO)

Revision title: LSHO

Getting plate-solving status, please wait...
Lion Nebula (SH2-132) (SHO), 



    
        

            Andy  Brown
Lion Nebula (SH2-132) (SHO), 



    
        

            Andy  Brown

Lion Nebula (SH2-132) (SHO)

Revision title: LSHO

Equipment

Imaging Telescopes Or Lenses
Takahashi FSQ-85EDX Baby-Q
Imaging Cameras
ZWO ASI294MM-Pro
Mounts
iOptron CEM70
Filters
ZWO OIII 1.25" 7nm · ZWO SII 1.25" 7nm · ZWO Ha 1.25" 7nm
Accessories
ZWO EAF 5V Electronic Auto Focuser · ZWO 8x 1.25" EFW · Takahashi Reducer 0.73x f/3.9
Software
Aries Productions Astropixel Processor · Topaz Labs Denoise AI · StarXterminator · Astro Photography Tool · Adobe Photoshop v23 · openphdguiding.org PHD2 v2.6.10
Guiding Telescopes Or Lenses
Primaluce 60mm Guidescope
Guiding Cameras
ZWO Optical ASI290MC

Acquisition details

Dates:
Nov. 21, 2021 ·  Nov. 22, 2021
Frames:
ZWO Ha 1.25" 7nm: 33x300" (2h 45') (gain: 0.00) 20C bin 1x1
ZWO Ha 1.25" 7nm: 37x300" (3h 5') (gain: 108.00) -20C bin 1x1
ZWO OIII 1.25" 7nm: 27x300" (2h 15') (gain: 0.00) -20C bin 1x1
ZWO OIII 1.25" 7nm: 43x300" (3h 35') (gain: 108.00) -20C bin 1x1
ZWO SII 1.25" 7nm: 28x300" (2h 20') (gain: 0.00) -20C bin 1x1
ZWO SII 1.25" 7nm: 38x300" (3h 10') (gain: 108.00) -20C bin 1x1
Integration:
17h 10'
Darks:
24
Flats:
50
Flat darks:
50
Avg. Moon age:
17.10 days
Avg. Moon phase:
93.76%
Bortle Dark-Sky Scale:
4.00

Basic astrometry details

Astrometry.net job: 5306490

RA center: 22h19m41s.8

DEC center: +55°4937

Pixel scale: 2.909 arcsec/pixel

Orientation: 359.242 degrees

Field radius: 1.275 degrees

Resolution: 2625x1750

Locations: Home, Tavistock, Devon, United Kingdom

Data source: Backyard

Description

Lion Nebula (SH2-132)

The Lion Nebula, catalogued as Sharpless 132, in the constellation Cepheus, is an emission nebula around 10,000 ly away. It contains two ionizing Wolf Rayet stars and two dark nebulae (LDN 1150 & 1154).

This is my first mono project using the ASI294mm-Pro, processed in APP using the SHO palette (with modifications in PS). I've taken some time taking good calibration frames for each filter and gain setting (6 sets of Flat/Dark Flats and 2 sets of Darks) and I'm happy with the results from the initial integration. I'm still developing my processing workflow, including better ways to handle noise reduction and star control (using StarXTerminator). I have noticed the problem with the AI5 version of StarXTterminator introducing smooth, noise-free patches around stars and await the update for PS with AI6 which apparently solves this problem.

Comments

Revisions

  • Lion Nebula (SH2-132) (SHO), 



    
        

            Andy  Brown
    Original
  • Final
    Lion Nebula (SH2-132) (SHO), 



    
        

            Andy  Brown
    E

E

Title: LSHO

Description: I used the luminance channel in a Lab version of the image to overlay on the original SHO image to enhance the contrast and brightness. The colour palette has also been modified slightly.

Uploaded: ...

Sky plot

Sky plot

Histogram

Lion Nebula (SH2-132) (SHO), 



    
        

            Andy  Brown