Northern Lagoon Nebula (urmymuse)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: NGC 7538 · Sh2-158

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Northern Lagoon Nebula

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Northern Lagoon Nebula

Well saw this object the first time in Chuck's brilliant image the other day

Skies cleared briefly here in the UK last night so gave this a go

Very frustrated with the horrible star shapes, having spent hours on collimation I now of the view this is cause of sensor tilt / sag ... don't think guiding as PHD2 results are good and short exposures and v high ISO test shots also show terrible shape

I may try and return to my baader field flattener as the posh on I now using I don't seem to get round stars in the middle of the field let alone the side

Any advice on this gratefully received !!!

From wiki ....

NGC 7538, near the more famous Bubble Nebula, is located in the constellation Cepheus. It is located about 9,100 light-years from Earth. It is home to the biggest yet discovered protostar which is about 300 times the size of the Solar System. It is located in the Cepheus' Arm of the Milky Way and is probably part of the Cassiopeia OB2 complex.[3] It is a region of active star formation including several luminous near-IR and far-IR sources.[3] Stars in NGC 7538 are mainly low-mass pre-main-sequence stars.[4]

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Description: Got rid of some hot pixels darks hadn't dealt with plus did a tiny bit more noise reduction

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C

Description: Applied star reduction techniques

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Status	Advanced success
Started	...
Astrometry.net job	3264564
PixInsight job	5U7JYP35OL62E3K9CI9JMZ7PKL2BLTOT
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	23h13m43s.657
RA (top/left)	23h12m26s.565
RA (top/right)	23h11m42s.633
RA (bottom/right)	23h14m59s.365
RA (bottom/left)	23h15m46s.404

Dec (center)	+61°30′46″.22
Dec (top/left)	+61°48′02″.10
Dec (top/right)	+61°17′39″.80
Dec (bottom/right)	+61°13′27″.45
Dec (bottom/left)	+61°43′46″.23

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Northern Lagoon Nebula

Northern Lagoon Nebula

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