Hemisphere:  Northern  ·  Constellation: Taurus (Tau)  ·  Contains:  Barnard's Merope Nebula  ·  IC 349  ·  Maia Nebula  ·  Merope Nebula  ·  NGC 1432  ·  NGC 1435  ·  The star 18Tau  ·  The star Atlas (27Tau)  ·  The star Celaeno (16Tau)  ·  The star Electra (17Tau)  ·  The star Merope (23Tau)  ·  The star Pleione (28Tau)  ·  The star Sterope I (21Tau)  ·  The star Taygeta (19Tau)  ·  The star ηTau
Getting plate-solving status, please wait...
Quite cloudy tonight - M45, 


Quite cloudy tonight - M45
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Quite cloudy tonight - M45

Technical card

Imaging telescopes or lenses: Takahashi Sky90

Imaging cameras: Canon EOS 760D

Mounts: Losmandy G9

Focal reducers: Takahashi Reducer/Flattener for Sky90 0,8x

Software: Pleiades Pixinsight 1.8.6 Ripley

Dates:Nov. 21, 2020

Frames: 40x480" ISO800

Integration: 5.3 hours

Flats: ~10

Bias: ~51

Avg. Moon age: 6.72 days

Avg. Moon phase: 42.94%

Bortle Dark-Sky Scale: 4.00

Basic astrometry details

Astrometry.net job: 4127619

RA center: 3h 46' 28"

DEC center: +23° 58' 44"

Pixel scale: 1.884 arcsec/pixel

Orientation: 358.646 degrees

Field radius: 1.775 degrees

Resolution: 5376x4136

Locations: Garten, Schwäbisch Gmünd, Germany

Data source: Traveller


Happy New Year to everybody!

A first version of M45
More processing is needed. Especially, I have to fix the problem with the star cores that occured during Deconvolution. Any hints for processing are welcome ...

Stay well and CS



  • Quite cloudy tonight - M45, 


  • Final
    Quite cloudy tonight - M45, 




Description: I went back several steps and run Repaired HSV Separation with optimized settings. Then I used a star mask during deconvolution to prevent the star cores from oversaturation. The noise reduction was done in serveral steps including TGVDenoise and MMT in the linear range and then MMT after stretching. I used diferent setting to rmve the noise on different wavelet layers. The final touch included MorphoTrans and Curves with the proper masks for stars and background, respectively. I'm quite statisfied with it ... ;-)

Uploaded: ...

Sky plot

Sky plot


Quite cloudy tonight - M45,