elpajare
Member
Posts: 438
home town/country: Girona-Spain
time zone gmt +/-: 1
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Post by elpajare on Jan 25, 2019 17:57:21 GMT
This small and distant galaxy was documented by the known astronomer Steve Gottlieb at the end of the last century. He used two telescopes, one of 8 "and another of 17.5" and his comments are the result of what he could see visually then. Today thanks to the help of modern cameras we can recreate what he saw, improved even, from the backyard of our house
Those are his comments:
17.5" (1/19/91): fairly bright, large, about 4'x3' extended ~E-W. Unusual appearance as two bright stars are involved on the east side. Sharp concentration with a faint outer halo and a well-defined much brighter core. A mag 10.5 star is on the east side 52" from the center and a mag 10 star is at the east edge of the halo 1.6' from the center. Also a mag 13.5 star is superimposed about 30" SSE of the core.
8" (3/28/81): faint, large, low surface brightess. Two mag 10 stars are at the east edge.
SKW Quattro+ RT IMX224 10x18"/ Gain max/ DFC/ no filters
There is some postproduction with Startools and this is the basic work-flow: Autodev/ Wipe/ Dev/ Flux(noise)/Color/Noise.
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Post by Dragon Man on Jan 26, 2019 15:10:47 GMT
Looks great Carlos Well done.
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elpajare
Member
Posts: 438
home town/country: Girona-Spain
time zone gmt +/-: 1
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Post by elpajare on Jan 26, 2019 15:46:51 GMT
Thanks Ken
In my opinion this combo SKW/Quattro+IMX224 is the best for this little and dim objects like small galaxies and planetary nebulas.
IMX224 and IMX294 are one of the best chips for Videoastronomy, IMO
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Post by ChrisV on Jan 27, 2019 22:43:51 GMT
Nice Carlos. Agree - it's a great combo
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