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Sunday, November 22, 2020
G65.3+5.7 , large supernova remnant in Cygnus, project continues
A large piece of an older mosaic image added, now the panorama covers sky from the Cresscent and Tulip Nebula all to wat to this large supernova remnant.
Previous version was with six frames and it can be seen here, https://astroanarchy.blogspot.com/2020/11/g65357-large-supernova-remnant-in.html
Here is a first single frame version of this SNR, https://astroanarchy.blogspot.com/2020/11/a-supernova-remnant-in-cygnus-g65357-snr.html
This is a rarely imaged target, this is also one of the most difficult targets, I have ever shot. Due to a very dense star field, large angular dimension and a very diffused structure this is much more difficult target, than a Simeis 147 supernova remnant in Taurus but just little easier than an other dim SNR in a same area of sky, the Cygnus Shell, W63.
Total exposure time of 60h was needed to have this image. The imaging system is very fast since it's undersampled and that's good when I want capture a very large, dim and diffused targets like this one. My current imaging system, https://astroanarchy.blogspot.com/2020/01/the-frankenstein-monster-my-current.html
G65.3+5.7 SNR has a large angular dimensions, than brighter and more famous supernova remnant in Cygnus, the Veil Nebula. The angular dimensions are about 3x4 degrees. This is a very difficult target, it has a very low surface brightness and the starfield is extremely dense in this part of the Milky Way.
it can be seen best in full size photo!
5nm H-alpha 3nm S-II and 3nm O-III
H-alpha, 24 x 1200 s, binned 1x1 = 28 h
O-III, 24 x 1200 s, binned 1x1 = 18 h
S-II, 12 x 1200 s, binned 2x2 = 14 h
Monday, November 16, 2020
G65.3+5.7 , large supernova remnant in Cygnus, project continues
Five new frames added, project will continue soon since I'm soon able to joint this new mosaic image to a much large mosaic of the area! Here is a previous single frame version of this SNR, https://astroanarchy.blogspot.com/2020/11/a-supernova-remnant-in-cygnus-g65357-snr.html
This is a rarely imaged target, this is also one of the most difficult targets, I have ever shot. Due to a very dense star field, large angular dimension and a very diffused structure this is much more difficult target, than a Simeis 147 supernova remnant in Taurus. Total exposure time of 20h was needed to have this image. The imaging system is very fast since it's undersampled and that's good when I want capture a very large, dim and diffused targets like this one. My current imaging system, https://astroanarchy.blogspot.com/2020/01/the-frankenstein-monster-my-current.html
G65.3+5.7 SNR has a large angular dimensions, than brighter and more famous supernova remnant in Cygnus, the Veil Nebula. The angular dimensions are about 3x4 degrees. This is a very difficult target, it has a very low surface brightness and the starfield is extremely dense in this part of the Milky Way.
it can be seen best in full size photo!
5nm H-alpha 3nm S-II and 3nm O-III
H-alpha, 24 x 1200 s, binned 1x1 = 8 h
O-III, 24 x 1200 s, binned 1x1 = 8 h
S-II, 12 x 1200 s, binned 2x2 = 4 h
Tuesday, November 3, 2020
Sharpless 124 (Sh2-124)
I found unprocessed material from my HD! Back in January 2016 I shot data for the Sharpless object 124 in Northern Cygnus. Something must happen at the time since I never processed the data.
Sh2-124 is an emission nebula in northern Cygnus at about 8.500 light years away. It doesn’t seem to be imaged very often, and I was not able to find much additional information about it.
Sharpless 124
Click for a large image
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZKCUZAidbJESiYT6Ip07sOFk_FgwCZAwXRxKc_ya1Pdel3uuTmVUN4kyqRbZGP9glMQhn3djUXDKfCk8MJm_z5mu84EO93wKP2XKJQkEhArZtgSt2SD6yy9TkuXNh_EgtbWc2Xe7bsl8f/w640-h719/Sh2-124.jpg)
Sh2-124 in H-alpha light
Click for a large image
Monday, November 2, 2020
A supernova remnant G65.3+5.7 SNR in visual spectrum
I have published this image in mapped colors yesterday. This time the color channels from narrowband channels H-alpha, O-III and S-II are combined so, that result is very close what human eye might see, if it could be sensitive enough.
G65.3+5.7 SNR in constellation Cygnus has about the same angular dimensions, than brighter and more famous remnant in Cygnus, the Veil Nebula. The angular dimensions are about 3x4 degrees. This is a very difficult target it has a large angular dimensions, very low surface brightness and the starfield is extremely dense in this part of the Milky Way.
G65.3+5.7 SNR in visual colors
click for a large image
5nm H-alpha 3nm S-II and 3nm O-III
H-alpha, 12 x 1200 s, binned 1x1 = 4 h
O-III, 12 x 1200 s, binned 1x1 = 4 h
S-II, 6 x 1200 s, binned 2x2 = 2 h