Thursday, January 16, 2020
Deep view to IC 1396
IC 1396 in visual colors
Please, click for a large image
Red glow of an ionized hydrogen (H-alpha) is dominating the view, bluish hues at center are from an ionized oxygen (O-III). There is some very faint O-III emission visible at nine o'clock position, near the left edge. I can see some circular shape there as well. It might be a very dim and diffused planetary nebula, I must look into this later. It can be seen better in mapped color version of this photo, https://astroanarchy.blogspot.com/2020/01/first-light-for-winter-season-2019-20.html
INFO
H-alpha, 12 x 600 s, binned 1x1 = 2 h
O-III, 6x 600 s, binned 4x4 = 1 h.
S-II, 3 x 600 s. binned 4x4 = 0,5 h
INFO
IC 1396 spans hundreds of light years at distance of about 3000 light years in constellation Cepheus. The famous formation of glowing gases, the "Elephant's Trunk Nebula" can be seen at four o'clock position.
This is an active star formation region and it has several massive young stars inside it, coursing the ionization of elements of this emission nebula.
Technical details
Processing workflow
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Tokina AT-x f2.8 camera lens
Mount
10-micron 1000
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x 2 and an old spotting scope of Meade LX200
Astrodon filters,
5nm H-alpha 3nm S-II and 3nm O-III
5nm H-alpha 3nm S-II and 3nm O-III
Total exposure time
H-alpha, 12 x 600 s, binned 1x1 = 2 h
O-III, 6x 600 s, binned 4x4 = 1 h.
S-II, 3 x 600 s. binned 4x4 = 0,5 h
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