Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  IC 1396
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Elephant Trunk *WIP* Bi-Color, 


            Dan Pelzel
Elephant Trunk *WIP* Bi-Color
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Elephant Trunk *WIP* Bi-Color

Technical card

Imaging telescopes or lenses: Stellarvue SV80ST-25SV

Imaging cameras: ZWO ASI1600MM-Cool

Mounts: CGEM DX

Guiding telescopes or lenses: Orion 50mm Guide Scope Orion 50 mm Guide Scope

Guiding cameras: Orion Starshoot Autoguider

Focal reducers: Stellarvue 0.8 FF&R Stellarvue 0.8

Software: PixInsight version 1.8

Filters: Baader OIII 1.25" 8.5nm  ·  Orion Extra Narrowband Filter Ha 1.25"

Dates:June 9, 2016June 13, 2016

Orion Extra Narrowband Filter Ha 1.25": 33x300" (gain: 139.00) -15C bin 1x1
Baader OIII 1.25" 8.5nm: 22x300" (gain: 139.00) -15C bin 1x1

Integration: 4.6 hours

Darks: ~40

Flats: ~20

Bias: ~150

Avg. Moon age: 6.56 days

Avg. Moon phase: 41.96%

Bortle Dark-Sky Scale: 9.00

Basic astrometry details

Astrometry.net job: 1120682

RA center: 21h 38' 12"

DEC center: +57° 32' 31"

Pixel scale: 2.033 arcsec/pixel

Orientation: -105.627 degrees

Field radius: 1.028 degrees

Resolution: 620x887


My first bi-color. I am not very happy with it. I had to corp a lot because of an alignment issue.
The Oiii data seemed really noisy. Maybe I should have waited for new moon.
There is some halos around the stars. I think that came from a curves saturation stretch done to the stars with a star mask.
A- First attempt
B- Re-saturated the stars with a better starmask to fix halos.
C- I tried some stuff suggested by Goofi, rflinn68, and Jon Rista and then I went way down the rabbit hole playing with colors. I love the artistic freedom mono imaging gives you!



  • Elephant Trunk *WIP* Bi-Color, 


            Dan Pelzel
  • Elephant Trunk *WIP* Bi-Color, 


            Dan Pelzel
  • Final
    Elephant Trunk *WIP* Bi-Color, 


            Dan Pelzel

Sky plot

Sky plot


Elephant Trunk *WIP* Bi-Color, 


            Dan Pelzel

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