Hemisphere:  Northern
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The Lion Nebula (Sh2-132), 


            Ivaylo Stoynov
The Lion Nebula (Sh2-132)
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The Lion Nebula (Sh2-132)

Technical card

Imaging telescopes or lenses: William Optics Megrez 80 FD

Imaging cameras: QHYCCD QHY 22

Mounts: iOptron CEM60

Guiding cameras: QHY5L-II Mono

Focal reducers: William Optics FF/FR 0.8x II

Software: PixInsight PixInsinght 1.8 RC7  ·  PHD guiding  ·  photoshop  ·  APT - Astro Photography Tool

Filters: Astrodon O-III 3nm  ·  Astrodon HII-3nm

Accessory: OAG

Dates:Sept. 20, 2019Sept. 21, 2019Sept. 27, 2019Sept. 28, 2019Sept. 29, 2019

Astrodon HII-3nm: 10x900" -34C bin 1x1
Astrodon HII-3nm: 31x900" -40C bin 1x1
Astrodon O-III 3nm: 11x1200" -34C bin 1x1
Astrodon O-III 3nm: 14x1200" -37C bin 1x1
Astrodon O-III 3nm: 7x1200" -40C bin 1x1

Integration: 20.9 hours

Avg. Moon age: 20.04 days

Avg. Moon phase: 25.29%

Basic astrometry details

Astrometry.net job: 3015022

RA center: 22h 17' 26"

DEC center: +55° 55' 1"

Pixel scale: 3.155 arcsec/pixel

Orientation: 8.843 degrees

Field radius: 0.985 degrees

Resolution: 1727x1440

Locations: Nedelkovo, near Sofia, Bulgaria

Data source: Backyard


Sh2-132, also named the Lion nebula is 10,000 to 12,000 light-years away, located in the Perseus arm of our Galaxy, with a size of more than 250 light years. On our sky is located on the border between the constellations of Cepheus and Lacerta. It is interesting that this image contains two Wolf-Rayet stars - WR 153ab near the "wall" structure in the lion's head an WR 152 in the blue dominated part of the nebula. The Wolf-Rayet stars are very big, bight and hot stars with strong solar winds. These winds are so strong that eject huge amount of mass from the stars - something like 10 Sun masses per million years. The extreme nature of the Wolf-Rayet stars always dominate the nearby regions and lightening the surrounding area. In this case there are two of them and they are helped from 5 small open clusters of young stars to show us something very beautiful.

This project is my personal integration time record - 20h 55min :) The object is quite faint, but is still in reach for the workhorse about wider fields - the trusty 80mm refractor.

The first revision is the processed Ha stack.



Ivaylo Stoynov
License: None (All rights reserved)


  • The Lion Nebula (Sh2-132), 


            Ivaylo Stoynov
  • Final
    The Lion Nebula (Sh2-132), 


            Ivaylo Stoynov

Sky plot

Sky plot


The Lion Nebula (Sh2-132), 


            Ivaylo Stoynov