Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  B160  ·  B161  ·  B162  ·  B163  ·  B365  ·  B367  ·  Erakis  ·  IC 1396  ·  PK097+03.1  ·  PK098+02.1  ·  PK100+04.1  ·  Sh2-128  ·  Sh2-131  ·  The star Garnet Star (μCep)  ·  VdB142  ·  mu. Cep
Getting plate-solving status, please wait...
IC 1396 | The Elephant Trunk +, 


            Kevin Morefield
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IC 1396 | The Elephant Trunk +

Getting plate-solving status, please wait...
IC 1396 | The Elephant Trunk +, 


            Kevin Morefield
Powered byPixInsight

IC 1396 | The Elephant Trunk +

Imaging telescopes or lenses: Takahashi FSQ 106 EDX4

Imaging cameras: QHYCCD QHY600M

Mounts: Paramount MyT

Guiding telescopes or lenses: Takahashi FSQ 106 EDX4

Guiding cameras: Starlight Express UltraStar Mono

Software: CCDWare CCDStack 2  ·  CCDWare CCDAutoPilot 5  ·  Adobe Photoship CC  ·  PixInsight

Filters: Chroma OIII 3nm  ·  Chroma SII 5nm  ·  Chroma Ha 5nm

Dates:Sept. 6, 2020

Chroma Ha 5nm: 57x600" (9h 30') (gain: 56.00) -10C bin 1x1
Chroma OIII 3nm: 48x600" (8h) (gain: 56.00) -10C bin 1x1
Chroma SII 5nm: 49x600" (8h 10') (gain: 56.00) -10C bin 1x1

Integration: 25h 40'

Darks: 9

Flats: 15

Bias: 15

Avg. Moon age: 18.64 days

Avg. Moon phase: 83.91%

Bortle Dark-Sky Scale: 7.00

RA center: 21h39m05s.561

DEC center: +57°3010.90

Pixel scale: 1.458 arcsec/pixel

Orientation: 84.166 degrees

Field radius: 2.284 degrees

More info:Open 

Resolution: 9392x6266

Locations: Central Portland Oregon, Portland, Oregon, United States

Data source: Backyard


This is more backyard data with the FSQ106 and QHY600M. There is almost no cropping at all so it just did fit!

Ionized by a massive central star, this is a site where stars have been forming as recently as the last 100,000 years. There are four interesting small objects you may see on full screen or full resolution view:

-PK 100+04.1 is a bright blue planetary just below and the right of the Garnet Star.

-SH2-128 is a tiny, 1 arc minute, emission nebula in the lower left. This was previously erroneously included on the PK list as PK 97 +03.1.

-PK 098 + 2.1 is a tiny (0.11 arc minutes!) blue planetary on the left side. I can only see this on full resolution view.

-Lan 424 -- UV-emission source (not picked up by the plate solve) This is located on the very edge of view in the lower right. Simbad does not give any hint at what it is but is sure looks like a planetary nebula.

The star colors are narrowband as produced by the channel mix. The mix used Ha and SII for Red, OIII for Green and OIII minus SII/2 for Blue. While the star colors produced are nice blues, yellows and reds, they are not perfect. The Garnet star here is yellow and not garnet at all!

Processing steps:

1) Calibration in CCDStack

2) Star Alignment and Image Integration with PI

3) Color Channel Combination with PI PixelMath, Ha[SII/Ha, OIII, OIII-SII/2]

4) StarNet++ star removal

5) Noise Reduction with Topaz AI Clear

6) PS CC Unsharp mask at 3 and 66 pixel scales

7) Hue shifting, curves, contrast vibrance, and saturation with PS CC

Stars replace with Lighten layer in PS CC

9) Clarity, hue shifts, in Camera Raw

10) Further noise reduction with PS CC Reduce Noise