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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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Pleiades (M45) - Second Try, 


Pleiades (M45) - Second Try

Pleiades (M45) - Second Try

Technical card

Resolution: 2508x2201

Dates:Dec. 11, 2018

Frames: 120x120"

Integration: 4.0 hours

Avg. Moon age: 3.84 days

Avg. Moon phase: 15.79% job: 2455298

RA center: 3h 46' 44"

DEC center: +24° 14' 31"

Pixel scale: 3.190 arcsec/pixel

Orientation: 108.696 degrees

Field radius: 1.479

Locations: Home, Silver Spring, Maryland, United States

Data source: Backyard


This is my second attempt at an image of the Pleiades (M45) with the new APO refractor setup. This image has ~4 hrs integration time (about 2x my previous attempt) captured over three nights (December 5, 10, and 11, 2017). I tried to combine additional data sets but have had problems with the resulting stacks. Will keep working on this one, but this is a bit better than the first attempt.

M45 imaged with WO GT81 at F4.7 (382 mm focal length) using Flat6A II field flattener/0.8x reducer and Nikon D750. Stacked using DSS for a total integration time of ~4 hours using 120 sec subs at ISO 200. Subtracted darks, bias, and flats. Processed in Pixinsight: Cropped, gradient removal with DBE, Background Neutralization, Color Calibration, SCNR, stretched using Histogram Transformation Tool, Curves Transformation, HDR Multiscale Transform, ACDNR noise reduction, Color Calibration.



License: None (All rights reserved)

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Pleiades (M45) - Second Try, 



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