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Contains:  Merope nebula, NGC 1435, Maia nebula, NGC 1432, The star ηTau, The star Merope (23Tau), The star Sterope I (21Tau), The star Taygeta (19Tau), The star 18Tau, The star Electra (17Tau), The star Celaeno (16Tau)
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M45 - Plejades in H(HO)O, 


            Uwe Deutermann
M45 - Plejades in H(HO)O

M45 - Plejades in H(HO)O

Technical card

Resolution: 3720x3036

Dates:Sept. 15, 2018Sept. 16, 2018

Baader H-Alpha 2" 7nm: 9x300" (gain: 100.00) -10C bin 1x1
Baader OIII 2" 8,5nm: 46x300" (gain: 200.00) -10C bin 1x1

Integration: 4.6 hours

Darks: ~55

Flats: ~99

Bias: ~50

Avg. Moon age: 6.48 days

Avg. Moon phase: 40.49%

Bortle Dark-Sky Scale: 6.00

Temperature: 27.00 job: 2263164

RA center: 56.610 degrees

DEC center: 24.264 degrees

Pixel scale: 1.368 arcsec/pixel

Orientation: 90.379 degrees

Field radius: 0.912 degrees

Locations: Home Backyard, Fleming Island, Florida, United States

Data source: Backyard


Was unlucky to obtain more images for the Hα channel, it started to rain overnight (and the telescope stayed out there, yikes!) so that I got only 9 sub frames. Hence the image resulted a bit more "blueish" than I wanted, although the Plejades should always be "blueish" :-), it somehow fits to it. There is still enough time this year to improve.
Red = Hα
Green = 50% Hα - 50% OIII
Blue = OIII



Uwe Deutermann
License: Attribution-NonCommercial-ShareAlike Creative Commons


  • M45 - Plejades in H(HO)O, 


            Uwe Deutermann
  • Final
    M45 - Plejades in H(HO)O, 


            Uwe Deutermann


More details in the nebulosity and more color neutral.

Sky plot

Sky plot


M45 - Plejades in H(HO)O, 


            Uwe Deutermann

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