elpajare
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Posts: 438
home town/country: Girona-Spain
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Post by elpajare on May 21, 2017 9:44:16 GMT
Epsilon Lyrae is a binary star system in the constellation Lyra, appearing just to the northwest of Vega. Commonly known as the "double-double", Epsilon Lyrae is one of the most well known binary stars (Skysafari) Separated by 208", ε Lyr can easily be resolved into two components when viewed through binoculars, or even by the naked eye under excellent conditions. The northern component is called ε1 Lyr, and the southern one is ε2 Lyr; they both lie around 180 light years from Earth and orbit each other. This picture was taken with a Bresser AR 102xs and a Mallincam AG1.2c with 10x3" /Gain30
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Post by Dragon Man on May 21, 2017 13:13:11 GMT
Fantastic pic. Interesting how they appear to be the same size, type, and magnitude.
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elpajare
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Posts: 438
home town/country: Girona-Spain
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Post by elpajare on May 22, 2017 6:56:37 GMT
Thanks Ken.
Im new with this scope and really appreciate technical comments about this pictures.
I use to use a newton and this is a new world for me.
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Post by Dragon Man on May 22, 2017 10:04:36 GMT
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Post by Deleted on May 22, 2017 12:24:09 GMT
Carlos I am jealous of the number and frequency of clear nights you get in Girona as well as the quality of your imaging. Are you finding you are getting better results with your f4.5 102 refractor over your f4 200 newtonian? While on the topic of fast scopes ,do you have any experience with .5 focal reducers on these setups? ...Or should that question be a new thread Paul
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Post by Dragon Man on May 22, 2017 12:56:26 GMT
Carlos . . . While on the topic of fast scopes ,do you have any experience with .5 focal reducers on these setups? ...Or should that question be a new thread Paul It's a good question for this thread Paul, because it is a very fast scope that Carlos has used for his image in this thread even though we can't buy this particular scope in Australia
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elpajare
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Posts: 438
home town/country: Girona-Spain
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Post by elpajare on May 22, 2017 20:21:57 GMT
Paul, I use each scope for a different targets:
The Bresser only for stars ( open clusters and single stars) with the Mallincam AG1.2c (IMX224)
The Newton only for galaxies, planetary nebulas and globular clusters with the ATIK Infinity.
Refractor gives me more color in the stars but less detail in general. The 8" of the newton does the diference in globulars and galaxies. This summer i will start imaging HII nebulas with both, I don know how Bresser will performs. Infinity + Newton does not works very well in faint nebulas. I will try The Mallincam's 224 chip as soon as they start to appear.
My experience with reducers is not good, I prefer the native FOV of my scopes. Refractor gives less detail in general and if I put a reducer, detail is worst and annoying aberrations appear. With Newton I dont achieve focus.
Native f/4 and f/4,5 are adequate for videoastronomy in my opinion and enough for the kind of photos I like.
Girona and Spain in general is a country with a lot of sunny days. The clouds do not last long around here.
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Post by ChrisV on May 22, 2017 23:56:49 GMT
+1 with Ken. Nice stars.
Andrews Comm in Sydney sell Bressers. They have an ar102. Don't know if it's the same though. You don't see much about thsee scopes. I assume they are achromats?
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Post by Deleted on May 23, 2017 0:35:00 GMT
Carlos,I have a GSO 200 f4 newtonian which I plan to use with the RT 1600 when I get some decent weather. I have been using the 1600 on my LX90 250 f10 with a .5 focal reducer(2") and results are pretty poor. I know it is not the camera because Ken has used it and had no problem. It appears if I toss the reducer and get some longer exposures than 30 secs with the f4 on the eq mount then I might get some improvement. I use my 224 on the 6se with hyperstar and am quite happy with that . I am keen to give the infinity a go on the f4 as well. It virtually doesnt get used at the moment . Paul
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Post by howie1 on May 23, 2017 1:16:41 GMT
Always happy to give the Infinity a temporary home if you are not using it! LOL. I'll send it back when you want! Promise.
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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 May 23, 2017 7:12:16 GMT
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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 May 23, 2017 7:21:53 GMT
Carlos,I have a GSO 200 f4 newtonian which I plan to use with the RT 1600 when I get some decent weather. I have been using the 1600 on my LX90 250 f10 with a .5 focal reducer(2") and results are pretty poor. I know it is not the camera because Ken has used it and had no problem. It appears if I toss the reducer and get some longer exposures than 30 secs with the f4 on the eq mount then I might get some improvement. I use my 224 on the 6se with hyperstar and am quite happy with that . I am keen to give the infinity a go on the f4 as well. It virtually doesnt get used at the moment . Paul The combination Newton+Infinity will like you. Specially for deep sky objects like galaxies and globulars.
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Post by ChrisV on May 23, 2017 7:35:25 GMT
Paul
Like Carlos + Howie, I reckon your 200mm f4 will be an absolute beast with the infinity.
No pressure but I am expecting no less than excellent captures !!
Chris
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Post by Dragon Man on May 23, 2017 8:15:37 GMT
Chris, Andrews don't have this model that Carlos uses. I checked LOL! It does have an ED lens, but at that focal length it doesn't help much so the company marks them as Achromats, even though they are ED's. None of the short length 102mm Bressers are available in Australia. I checked on that too They make a 102mm refractor in f/4.5, f/5.9, f/9.8. anf f/13.2 but only the f/4.5 has the ED lens. Only the f/9.8 in the 102mm range are available in Australia, at Andrews, Procular, DC cameras, and Optics Central. The brand isn't popular outside Europe.
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