Elephant Trunk - First Light with ASI1600 (Kevin Morefield)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: B161 · IC 1396 · Sh2-131 · VdB142

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Elephant Trunk - First Light with ASI1600

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Elephant Trunk - First Light with ASI1600

I recently installed a Takahashi FSQ106 and ZWO ASI1600 on top of the Planewave. I was concerned that this added weight at both ends (counter weight too) would degrade the guiding performance of the Planewave. It does seem to have more variation in the model error, but my guide error is close to where it was before. The model error moved up from 5a-s to 12a-s, and my guide error is usually in the 0.5" rather than 0.4" range.

But this does not impact the results from my 1.46" image scale on the Tak! The resolution I'm seeing from this little scope is quite nice! I haven't got things completely dialed in but I have been able to capture good data.

This is a SHO image with the following blend:

Red = SII+33%Ha

Green = SII25%+Ha 50%+OIII25%

Blue = OIII

Luminance = Ha

Star color is SHO

Pre-processing in CCDStack and Post-processed in Photoshop.

Post-processing included lane darkening with a High Pass filter, Sharpening with Unsharp Mask, Luminance noise reduction via Topaz, color noise reduction with Gaussian Blur and Dust and Scratches.

Original
B
Final
C
D

B

Description: color balance

Uploaded: ...

C

Description: Contrast, color balance, dodge and burn

Uploaded: ...

D

Description: This is a quick starless version. I used StarNet++ to create a starless version, and then did a difference layer over the original. That allow me to better select the stars and let the PS fill command to the star replacement. I was also able to deselect some non-star areas. Since I don't have any plans for this I didn't do a full job clean up. Just for fun!

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	2929540
PixInsight job	UNOK084HKN5MN2TJEU9EEKY0I97TK4M4
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h36m20s.33
RA (top/left)	21h35m34s.86
RA (top/right)	21h44m33s.13
RA (bottom/right)	21h37m08s.80
RA (bottom/left)	21h28m14s.37

Dec (center)	+57°51′01″.10
Dec (top/left)	+56°44′28″.6
Dec (top/right)	+58°05′06″.10
Dec (bottom/right)	+58°57′34″.1
Dec (bottom/left)	+57°34′59″.4

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Elephant Trunk - First Light with ASI1600

Elephant Trunk - First Light with ASI1600

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Elephant Trunk - First Light with ASI1600

Elephant Trunk - First Light with ASI1600

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