Description
Nom : IC 1396 – Sh2-131 – Nébuleuse de la trompe d’éléphant
Type : Nébuleuse par émission
Distance : ~2400/3000 AL
Taille : 170′ x 140′ (~120/150 AL)
Magnitude : 9,4
Meilleure période d’observation : Automne
𝗘𝗤𝗨𝗜𝗣𝗠𝗘𝗡𝗧
Imaging telescope / lens
Nikon Lens 200 mm AF-S NIKKOR 200mm f/2 G VR II ED
Imaging camera
ZWO Optical 1600MM (CMOS)
Mount
Equatorial Sky-Watcher HEQ5 Pro
Guiding telescope / lens
ZWO Optical Achromatic 30/120 mm Zwo 30F4
Guiding camera
ZWO Optical 120mm mini (CMOS)
Filters
ZWO Optical H-alpha (Narrowband Hydrogen Alpha) The ZWO H-Alpha filter 1.25″ 7nm
ZWO Optical OIII (Narrowband Oxygen 3) The ZWO narrowband O-III 1.25″ 7nm
ZWO Optical SII (Narrowband Sulfur 2) The ZWO narrowband S-II 1.25″ 7nm
Processed with
Photoshop CC2021
PixInsight (Pleiades Astrophoto) 1.8.8 Replay
DeNoise (Topaz Labs)
Zwo Asi Air Pro
𝗙𝗥𝗔𝗠𝗘𝗦 / 𝗦𝗨𝗕𝗦
Lights (filter H-alpha)25 x 600 sec
Lights (filter SII)20 x 600 sec
Lights (filter OIII)24 x 600 sec
Total lights integration time11:30 hours
𝗔𝗖𝗤𝗨𝗜𝗦𝗜𝗧𝗜𝗢𝗡
Date Fri Jun 4th 2021
Seeing 4 / 5
Transparency 5 / 5
Sky Darkness# 4 Rural/suburban transition – 6/9
Ambient Temperature 25.0 ºC
Camera Sensor Temperature -10.0 ºC
Binning 1×1
Gain 139
𝗣𝗜𝗖𝗧𝗨𝗥𝗘 𝗚𝗘𝗢𝗠𝗘𝗧𝗥𝗬
Image Size2,048 x 1,990 pixels
Image Scale8.609 arcsec / pixel
Visual Field04º 53′ 35″
RA Center21hr 39′ 38″
DEC Center57º 22′ 40″
Orientation90.9 degrees E of N
Crédit : Makrem Larnaout
Bon ciel à tous
Facebook : La trompe d’éléphant
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