Friday, January 17, 2025
Cederbald 214
This winter season I have shot some of my old targets again with my new imaging system. It takes some time to get familiar with a new system and get everything out of them technically.
I have been really happy with the optical quality of my 142 Celestron EDGE telescope, specially with the secondary mirror focuser does the trick, no more mirror flops since main mirror is locked down all the time. Mesu mount Mark II has served well as a very solid imaging platform.
CEDERBLAD 214
Click for a full size, 2000x2000 pixels
Click for a full size, 2000x2000 pixels
A mapped color image from a light emitted by an ionized elements,
sulfur=red, hydrogen=green and oxygen=blue
sulfur=red, hydrogen=green and oxygen=blue
A full Resolution Closeup
Click for a full size, 2000x2000 pixels
Click for a full size, 2000x2000 pixels
Structure Study of the Cederblad 214
INFO
Source: NASA APOD
Towering pillars of cold gas and dark dust adorn the center star forming region of Sharpless 171. An open cluster of stars is forming there from the gas in cold molecular clouds. As energetic light emitted by young massive stars boils away the opaque dust, the region fragments and picturesque pillars of the remnant gas and dust form and slowly evaporate. The energetic light also illuminates the surrounding hydrogen gas, causing it to glow as an emission nebula. Pictured above is the active central region of the Sharpless 171 greater emission nebula. Sharpless 171 incorporates NGC 7822 and the active region Cederblad 214, much of which is imaged above. The area above spans about 20 light years, lies about 3,000 light years away, and can be seen with a telescope toward the northern constellation of the King of Ethiopia (Cepheus).
Cederblad 214 in a large context
Technical details
Processing workflow
Image acquisition, MaximDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 27 iterations, added at 50% weight
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics,
Celestron EDGE 14" with 0.7 Focal reducer
Mount,
MesuMount Mark II
Cameras,
Imaging camera Apogee Alta U9000M and Apogee seven slot filter wheel
Guider camera, Lodestar x 2 and SXV-AO Active Optics @ 5hz
filters,
Astrodon 5nm H-alpha, 3nm S-II and 3nm O-III
Total exposure time 9h
H-alpha, 15 x 1200 x, binned 1x1 = 5h
O-III,9x 1200 s, binned 2x2 = 2h
S-II, 9 x 1200 s. binned 2x2 = 2h
A single calibrated 20 min exposure of H-alpha, Bin 1x1
Click for a full size image.
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