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Contains:  Merope nebula, NGC 1435, Maia nebula, NGC 1432, The star Pleione (28Tau), The star Atlas (27Tau), 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 Pleiades

Technical card

Resolution: 3938x3118

Dates:Nov. 24, 2019Nov. 25, 2019

Chroma Blue 2" Mounted: 43x180" bin 1x1
Chroma Green 2" Mounted: 58x180" bin 1x1
Chroma Luminance 2" Mounted: 138x120" bin 1x1
Chroma Red 2" Mounted: 70x180" bin 1x1

Integration: 13.2 hours

Avg. Moon age: 27.75 days

Avg. Moon phase: 3.86%

Bortle Dark-Sky Scale: 6.00

Mean SQM: 19.00 job: 3086885

RA center: 56.639 degrees

DEC center: 24.148 degrees

Pixel scale: 1.735 arcsec/pixel

Orientation: 85.292 degrees

Field radius: 1.210 degrees

Data source: Backyard


This was one of my first DSOs, and I've been wanting to revisit it since trying, and failing miserably, to image it a few years ago. It was more difficult than I thought to process, since there is little to no clear view of background sky.

In the final full resolution version you can make out IC 349 Barnard's Merope Nebula at about the four o'clock position in the outer edge of Merope's halo. A little smudge of a different blue, but it's there. There is also a cute little edge-on galaxy at the top middle of the frame.



License: None (All rights reserved)



I think I pushed the data a little to hard on the first few attempts. I didn't like the noise profile, so I started over and ended here. I lost some of the really faint detail, but it is a trade-off for the improved noise level. You can also just make out IC 349 in this version (full resolution), which is a bonus.

Sky plot

Sky plot


M45 Pleiades,