Monday, November 5, 2018
LBN 239 and 243 in visual spectrum
Two of my latest photos are overlapping, so I was able to stitch them together to this two panel mosaic image. This time in visual colors combined from narrowband channels, H-alpha, S-II and O-III. Mapped color version can be seen in my previous post HERE
LBN 239 and 243 in Constellation Cygnus
Please, click for a large image
Image info and the technical data
Exposure times, equipments, filters and processing information for the both frames in this two panel mosaic image can be found behind the links.
Upper part of the photo above:
https://astroanarchy.blogspot.com/2018/10/this-new-photos-shows-lbn-251-and.html
Bottom half:
https://astroanarchy.blogspot.com/2018/11/lbn-243.html
Sunday, November 4, 2018
LBN 239 and 243
Two of my latest photos are overlapping, so I was able to stitch them together to this two panel mosaic image.
LBN 239 and 243 in Constellation Cygnus
Please, click for a large image
Bow Tie of LBN 251, LBN 239 and the IC 1311
Click for a large photo
More info and technical detais, https://astroanarchy.blogspot.com/2018/10/this-new-photos-shows-lbn-251-and.html
LBN 243
Click for a large image
More info and technical detais, https://astroanarchy.blogspot.com/2018/11/lbn-243.html
Saturday, November 3, 2018
Just for a fun
Natural phenomenons has a tendency to have the same patterns.
Brain vessels VS Supernova remnant
Please, click for a large image
The MRA photo of brain vessels is form here:
https://www.nature.com/articles/d41586-018-07182-7
My photo of Simeis 147 supernova remnant can be seen here:
https://astroanarchy.blogspot.com/2013/09/a-supernova-remnant-simeis-147.html
LBN 243
I have been using my large 18-panels mosaic image of the Cygnus Nebula Complex as a map to a some rarely imaged dimmer nebulae in that area. The large mosaic photo was taken with a Canon EF 200mm@f1.8 camera lens. I have shot many interesting areas from that photo with much longer focal length instruments.
Last few years I have been using an excellent telescope for that task, Celestron Edge 11" reflecting telescope with 0.7 focal reducer. BTW, this is one of the very best focal reducers I have ever been using! Its build like a tank and optical quality is next to nothing. The reducer cost about as much as an good quality refracting telescope but it's worth of every penny. With this reducer my Apogee Alta U16 camera has a spatial resolution of about one arcsecond per pixel. That image scale is pretty much optimal for my imaging purposes.
This time I picked up an interesting looking object from Cygnus Nebula Complex, the emission nebula LBN 243. It's a kind of dim target and I was able to dig out some extreme dim emission of ionized oxygen too (O-III) I haven't seen any pictures focusing to this target so far.
Click for a large image
An experimental starless version
Click for a large image
It's much easier to see the shapes and details in actual nebula, when the stars are removed.
Orientation in large context
Click for a large image
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
Celestron Edge HD 1100 @ f10 with 0,7 focal reducer for Edge HD 1100 telescope
Mount
10-micron 1000
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x 2 and SXV-AOL
Astrodon filters,
5nm H-alpha 3nm S-II and 3nm O-III
5nm H-alpha 3nm S-II and 3nm O-III
Exposure times
H-alpha, 13 x 1200 s, binned 2x2 = 4 h
O-III, 6 x 1200 s, binned 4x4 = 2 h.
S-II, 3 x 1200 s. binned 4x4 = 1 h
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