elpajare
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home town/country: Girona-Spain
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Post by elpajare on Mar 19, 2019 7:41:24 GMT
TSOptics RC 8"+IMX294
15x18" + DFC+Startools
No filters nor reducers
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Post by Dragon Man on Mar 19, 2019 8:08:20 GMT
I like the Blackeye Galaxy. You have done well Carlos. The core is very detailed.
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elpajare
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Posts: 438
home town/country: Girona-Spain
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Post by elpajare on Mar 19, 2019 9:52:01 GMT
I think that in the end I found the ideal combination to photograph / observe this type of small and weak objects. The Richtie-Chretien has a good opening and does not give a coma error like the Newton. It is shorter and weighs 1 kilo less therefore more manageable. And the IMX294 chip is big enough to have an adequate FOV with good detail and good sensitivity. The exposure times do not exceed 30 ". For stars and clusters it is recommended to use an IR / UV filter to adjust the stars but for galaxies nothing is needed. Maybe some planetary nebula will need a UHC filter but little else. This mate uses an equal combination and I like his results: www.flickr.com/photos/23705399@N04/sets/72157692230746941/with/40259602243/
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Post by Deleted on Mar 19, 2019 11:24:24 GMT
I love the 294 with the bigger aperture scope. What surprises me Carlos is how much detail you get with F8 over 18 seconds.I need the bigger scopes to be fast. I get really poor results with the my sct's if they are not focally reduced to at least around f4. cheers Paul
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elpajare
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Posts: 438
home town/country: Girona-Spain
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Post by elpajare on Mar 19, 2019 14:25:00 GMT
As they say, the RCs are pure reflectors, they do not have any lens interposed as opposed to the SCC, hence the detail and the absence of optical errors that need new pieces interposed to correct them. The photos with the RC have absolutely nothing interposed, neither reducers nor filters
That's why I bought it and because it has a reasonable price
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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 Mar 19, 2019 19:44:44 GMT
TSOptics RC 8"+IMX294
15x25" + DFC+Startools
No filters nor reducersAnother example. I think the detail that is achieved with this combination is the maximum that can be obtained. The color of the stars and the object is well differentiated and responds to the originals, I have not changed anything at all. As seen on the screen and with the subsequent adjustments with Startools respecting absolutely the original colors.
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elpajare
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Posts: 438
home town/country: Girona-Spain
time zone gmt +/-: 1
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Post by elpajare on Mar 19, 2019 19:51:45 GMT
TSOptics RC 8"+IMX294
15x25" + DFC+Startools
No filters nor reducersthe same procedure
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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 Mar 22, 2019 10:58:44 GMT
NGC 4414 is a 10th magnitude Spiral Galaxy appearing in the constellation Coma Berenices. It is 54 million light years from our solar system. TSOptics RC 8"+IMX294
15x25" + DFC+StartoolsNo filters or reducers
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elpajare
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Posts: 438
home town/country: Girona-Spain
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Post by elpajare on Mar 23, 2019 22:01:38 GMT
Messier 53 (also known NGC 5024) is a globular cluster in the constellation Coma Berenices TSOptics RC 8"+IMX294
15x12" + DFC+Startools+ UV/IR filter Baader Astronom3
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elpajare
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Posts: 438
home town/country: Girona-Spain
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Post by elpajare on Mar 24, 2019 11:25:21 GMT
Caldwell 36/ NGC 4559 is classified as SBc. Like many nearby spiral galaxies, NGC 4559 displays bright star-forming regions and dust lanes in its expansive arms. Its core contains an intermediate-mass black hole. TSOptics RC 8"+IMX294
15x12" + DFC+Startools
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elpajare
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Posts: 438
home town/country: Girona-Spain
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Post by elpajare on Mar 24, 2019 18:40:46 GMT
Messier 88 and Messier 91 at Coma Berenices TSOptics RC 8"+IMX294 15x12" + DFC+Startools
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elpajare
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Posts: 438
home town/country: Girona-Spain
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Post by elpajare on Oct 16, 2019 9:53:00 GMT
I have had some health problems that have kept me apart for a while from my normal activity happily overcome now. I post another image obtained with the combination TSoptics RC 8 "+ Risingcam IMX294 not refrigerated In the optical train there is only one UVIR filter, the camera is connected directly to the telescope's holder. This combination is compact and light weight which allows to use cheap mount. The camera is cheap as well as the capture software that is free. The final result must be attributed to Startools but it is true that the signal was there. This day seeing was not very good. There are 15 exposures of 25 seconds each stacked with the Risingsky soft with all the default parameters.
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Post by Dragon Man on Oct 16, 2019 12:09:15 GMT
Glad to hear you are feeling better. Excellent result Carlos. That is a weird looking Galaxy. Strange messy shape.
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elpajare
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Post by elpajare on Oct 16, 2019 16:44:19 GMT
Thanks Ken.
It is one of my favorites, it looks strange and the dark stripes between its outer wrap are quite well distinguished.
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Post by Deleted on Oct 16, 2019 21:52:14 GMT
Great results Carlos. You have stimulated me to go out and get some galaxy images.
cheers Paul
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elpajare
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home town/country: Girona-Spain
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Post by elpajare on Oct 17, 2019 7:06:19 GMT
The final result of the photograph depends a lot on how you have postprocessed it. With our simple means and short exposures (Videoastronomy) you can capture a surprising amount of signal but without a good postprocessing you can not see it.
As a rule, I always use the advice of Ivo Jager the author of Startools who recommends leaving the signal coming from the camera without treatment if possible. Startools makes the work much better.
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