Thursday, March 5, 2020
New photo "Deep In To Darkness"
We are soon running out of darkness up here 65 North. I had a one good night between Tuesday and Wednesday and I got five hours data collected for IC 410 and IC 405.
f2.8 300mm camera lens, Tokina AT-x, combined with a large 9 micron pixels in Apogee Alta U16 astro camera gives me spatial resolution of 6 arcseconds/pixel. It's little undersampled but works extremely well for my purposes to capture very dim nebula structures.
Deep In To Darkness, IC 405, IC 410 and companions
Click for a full resolution image, It's worth it!
H-alpha channel alone, labeled
A closeup
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
Total exposure time
H-alpha, 9 x 1200 s, binned 1x1 = 3 h
O-III, 3 x 1200 s, binned 2x2 = 1 h
S-II, 3 x 1200 s. binned 2x2 = 1 h
O-III, 3 x 1200 s, binned 2x2 = 1 h
S-II, 3 x 1200 s. binned 2x2 = 1 h
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