M45 | The Pleiades (Kevin Morefield)

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: 16 Tau · 17 Tau · 18 Tau · 19 q Tau · 20 Tau · 21 Tau · 22 Tau · 23 Tau · 24 Tau · 25 eta Tau · 26 Tau · 27 Tau · 28 Tau · Alcyone · Asterope · Atlas · Celaeno · Electra · IC 349 · M 45 · Maia · Maia nebula · Merope · Merope nebula · NGC 1432 · NGC 1435 · Pleione · Sterope II · Taygeta · The star 18Tau · And 8 more.

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M45 | The Pleiades

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M45 | The Pleiades

This is my second completed image using the ZWO ASI1600 and FSQ106, and it was an unexpected challenge. Prominent microlens reflections appeared on around the 10 brightest stars. I reduced exposure time to 60 seconds per sub but the reflections were still there to be seen when the subs were stacked and stretched. I also had twin diffraction spikes on some subs of some stars.

I did a lot of work in Photoshop to remove the reflections and odd spikes, but of course the resulting stars are not elegant. I would also say that I prefer this object with traditional diffraction spikes!

Do we know definitively what the source of these microlens reflections are with the ZWO? I believe all cameras today have microlenses, so what's difference here?

I sure hope the QHY600M I'm waiting on isn't similarly hobbled.

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Description: Microlens reflection example

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Status	Advanced success
Started	...
Astrometry.net job	3022393
PixInsight job	GLRO2KJ02ZQL5G7D6ZTHYQ6CBDRPNA09
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	03h46m24s.81
RA (top/left)	03h51m15s.41
RA (top/right)	03h44m28s.16
RA (bottom/right)	03h41m35s.28
RA (bottom/left)	03h48m19s.48

Dec (center)	+24°06′29″.3
Dec (top/left)	+24°20′26″.6
Dec (top/right)	+25°08′47″.6
Dec (bottom/right)	+23°51′56″.9
Dec (bottom/left)	+23°04′04″.3

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M45 | The Pleiades

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