IC 1396a (Cep)

IC 1396a (Cep)

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Date/Site: 8., 9., 11., 15., 16., 17., 18., 19. and 20. September 2020, remote observatory on the AAR club's site in Presberg
Exposure/
Filter:
R: 37 x 180 seconds,
G: 28 x 180 seconds,
B: 26 x 180 seconds,
L: 30 x 180 seconds
Hα: 38 x 300 seconds,
OIII: 56 x 300 seconds and 32 x 600 seconds (-20°C)
Camera: Moravian G3-16200 with Astronomik Type II-filters
Optics/
Instrument:
250mm f/4,7 Newton with VIP-3010 Paracorr on 10Micron GM1000 HPS
Guiding: Lodestar attached to a 61mm-finder,
focusing: Microtouch and FocusMax,
data acquired remotely using CCD-Commander and MaximDL 5,
calibration and processing: PixInsight 1.8

This dark nebula in the IC 1396-complex, called "elephant's trunk", is eroded by the energetic radiation of nearby stars, making it glowing with "bright rims". A small star cluster pushes the dust away and can already be seen near the top of the globule.
 
IC 1396a was imaged several years earlier from the Rifugio Monte Muro in South Tyrol:

IC 1396a (Cep)

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Date/Site: September 12., 2007, Rifugio Monte Muro, Maurerberg, South Tyrol
Exposure/
Filter:
1 x 5 minutes, 4 x 15 minutes
Camera: Canon EOS 300Da
Optics/
Instrument:
6"-Newton on Gemini 41 Observatory mount, Baader-coma-corrector
focusing with RoboFocus and DSLR Focus
webcam-guiding with MaximDSLR through 4"-FH-refractor
Darks: Fitswork,
aligning and stacking: MaximDSLR,
levels and curves: Photoshop CS

 

© Friedhelm Hübner, last revision:  17.01.2021