M45 with some surround nebula (Joostie)

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: IC 353 · Maia nebula · Merope nebula · NGC 1432 · NGC 1435 · The star 18Tau · The star 32Tau · The star 36Tau · The star Atlas (27Tau) · The star Celaeno (16Tau) · The star Electra (17Tau) · The star Merope (23Tau) · The star Pleione (28Tau) · The star Taygeta (19Tau) · The star ηTau

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M45 with some surround nebula

Link: http://www.drogenberg.be

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M45 with some surround nebula

Link: http://www.drogenberg.be

This is my second attempt to image the dust around M45. The last picture showed the nebulas clearly, but the use of the external IDAS filter scrambled the star image. So this time I did not use any filter at all.

The light pollution at 3 minutes and ISO800 was flooding the image. The histogram peaked right of the middle, all orange. So I switched from F/4 to F 5.6 and reduced the ISO to 400.

All images were made unattended, with the Lacerta guiding the EQ8. I did make sure the camera and lens were cooled down at ambient temperature before focusing and starting the sequence, to avoid focal creep as much as possible.

Update: added 21x300s. Version D has an artefact left lower corner was not covered by the second session.

Original
B
C
Final
D

B

Description: Applied HLVG in Photoshop CC

Uploaded: ...

C

Description: Again some more green removed

Uploaded: ...

D

Description: I could add a few hours of 5 minute shots, in total 6 hours.

Uploaded: ...

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Status	Basic success
Started	...
Astrometry.net job	2317821
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M45 with some surround nebula

M45 with some surround nebula

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M45 with some surround nebula

M45 with some surround nebula

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