Hemisphere:  Northern  ·  Contains:  VdB142
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IC 1396 - Elephant's Trunk nebula - Cepheus, 


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IC 1396 - Elephant's Trunk nebula - Cepheus

Imaging telescopes or lenses: CELESTRON EdgeHD 8

Imaging cameras: QHYCCD QHY8L

Mounts: Sky-Watcher AZ-EQ6 Synscan

Guiding telescopes or lenses: CELESTRON EdgeHD 8

Focal reducers: Celestron .7x

Software: Sequence Generator Pro  ·  PixInsight  ·  PHD Guiding 2.5.0

Filters: Hutech IDAS LPS-V4

Accessory: Starlight Xpress Lodestar x2  ·  Starlight Xpress AO Unit  ·  QHYCCD PoleMaster  ·  Starizona MicroTouch Autofocuser

Dates:Aug. 2, 2016Aug. 3, 2016Aug. 5, 2016

Frames:Hutech IDAS LPS-V4 : 13x1800" -15C bin 1x1

Integration: 6.5 hours

Darks: ~7

Flats: ~5

Bias: ~50

Avg. Moon age: 10.79 days

Avg. Moon phase: 2.69%

Mean SQM: 21.20

Mean FWHM: 2.40

Temperature: 18.00

Astrometry.net job: 1253960

RA center: 21h 34' 52"

DEC center: +57° 30' 13"

Pixel scale: 1.086 arcsec/pixel

Orientation: -10.923 degrees

Field radius: 0.551 degrees

Resolution: 3040x2024

Locations: Duc, Prayssas, Lot et Garonne, France


I use the Hutech LPV4 filter to boost teh Ha and O3 lines. However, I got most of the signal in the red and I was not able to display information in the green and blue channel. I guess for that you need NB imaging ?

Pre-processing done in Pixinsight :
- overscan area offset correction
- bias correction
- dark correction using 7 x 1800 s darks
- flat correction
- hot pixel correction
- debayer
- registration
- stack
Processing done in Pixinsight :
- backgroung color neutralisation
- color calibration using nebula
- non linear image creation
- color saturation boost masked
- TGV denoise (no mask)
Final image :
- jpeg calibration done in Mac Photo (levels adjust and further saturation boost)



License: None (All rights reserved)

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IC 1396 - Elephant's Trunk nebula - Cepheus,