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Technical card

Resolution: 2000x1927

Dates: Aug. 23, 2016Aug. 24, 2016Aug. 27, 2016

Baader Ha 7nm 2": 30x900" -10C bin 1x1
Baader OIII 8.5nm 2": 15x900" -10C bin 1x1

Integration: 11.2 hours

Darks: ~15

Flats: ~21

Flat darks: ~15

Avg. Moon age: 21.60 days

Avg. Moon phase: 55.60%

Mean SQM: 18.37 job: 1509429

RA center: 22.546 degrees

DEC center: 58.433 degrees

Pixel scale: 1.482 arcsec/pixel

Orientation: -89.771 degrees

Field radius: 0.572 degrees

Locations: Home observatory, Rescaldina, Milano, Italy


SH2-188 is a nebula in Cassiopea constellation. In spite it is included in Sharpless Catalogue, it is in reality a planetary nebula located about 711 light years from us. Its estimated age is about 7500 years.
This image was taken from my home terrace with a huge quantity of light pollution all around.



Roberto Marinoni

Sky plot

Sky plot


Sh2-188, Roberto Marinoni

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Imagers of Italy