by Chuck’s Astrophotography

2017.10.22

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The Elephant Trunk nebula is always a strange beast for me – it never turns out the same way when I capture and process it. For this attempt, I didn’t capture as much OIII as I wanted and now the weather is going to be bad for the next week. So I moved forward with the data I had. I think it’s an improvement over the last time I captured it three months ago. Here is more info:

Targets:
Elephant’s Trunk Nebula (IC 1396 )

Imaging Telescope:
Explore Scientific 127mm ED Refractor (952 focal length)

Field Flattener:
HoTech 2″ SCA Field Flattener

Mount:
Celestron CGX

Polar Alignment:
QHYCCD PoleMaster

Imaging Camera:
ZWO ASI1600MM-Cool

Ha=103x180s
OIII=60x120s
SII=84x180s
Total Time: 11.4 hours

Gain: 139, Offset: 21

Guide scope:
Orion ST80

Guide Camera:
Lodestar X2

Guide Software:
PHD2

Calibration Frames:
Darks: 50, Bias: 50, Flats: 50

Capture software:
Sequence Generator Pro (SGP)

Stacking software:
PixInsight

Post Processing:
PixInsight, PhotoShop

Dew Shield, Dew Heater Strip

Astrobin: http://astrob.in/318067/D/

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