Object:	IC 1396: Elephant's Trunk- Dark Nebula in Cepheus RA= 21h 39 min; Dec = +57 deg 30 min
Date & Site:	Imaged on 7/22/17; Palomar Mountain, CA Conditions: temps in the upper 60's; calm; very good seeing
Equipment:	Telescope: TEC 140 Refractor, 980mm at f/7 Guider: Hutech OAG-5 with SBIG guidehead Mount: AP 1100 CP3 Camera: ST-10XME; CFW10; Astrodon 3nm Ha, OIII, and SII narrowband filters
Notes:	Exposures: 60 minutes each (15 minute subexposures) of Ha, OIII, and SII for total of 3 hours The "elephant's trunk" is a cometary nebula - a band of dust and gas- being pushed away by radiation from a bright star near the top of the globule. Jets and particle winds emitted from this bright star radiate the ambient ionized hydrogen and dust. In this image, atomic hydrogen is mapped to blue. 3,000 light years away (image reduced to 60% of original size) FOV = 52 x 35 arc minutes Back to Images