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Contains:  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
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Pleadies M45, 


Pleadies M45
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Pleadies M45

Technical card

Imaging telescope or lens:Celestron 8 RASA

Imaging camera:ZWO ASI183MC-Cool


Guiding telescope or lens:Generic 240mm F4 guidescope

Guiding camera:QHYCCD QHY5III 174M


Dates:Dec. 16, 2019

Frames: 662x10" -10C bin 1x1

Integration: 1.8 hours

Darks: ~30

Flats: ~30

Bias: ~100

Avg. Moon age: 19.24 days

Avg. Moon phase: 79.03%

Bortle Dark-Sky Scale: 7.00

Mean SQM: 18.00

Mean FWHM: 3.00

Temperature: -5.00

Basic astrometry details job: 3131039

RA center: 3h 46' 45"

DEC center: +24° 7' 51"

Pixel scale: 1.241 arcsec/pixel

Orientation: 359.294 degrees

Field radius: 1.097 degrees

Resolution: 3480x5330

Data source: Backyard


Pretty happy with the amount of dust captured in less than 2 hours from a Bortle 7 backyard. The RASA wins again.

The sky started out mediocre, FWHM about 3.5. That improved toward the end to 2.4, a number I haven't seen in a long time. Then the Moon came out. Sigh.

Dropping everything above 3.3 cut out 1/3 of the data, I captured 1000 frames.



License: None (All rights reserved)

Sky plot

Sky plot


Pleadies M45,