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FORUMS Photography Talk by Genre Astronomy & Celestial Talk 
Thread started 03 Jun 2015 (Wednesday) 15:29
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Skywatcher Evostar 80ED DS-Pro & HEQ5 PRO

 
thc1979
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Jun 03, 2015 15:29 |  #1

Looking at a telescope for some astrophotography at the end of the summer, I've been looking at kit for several weeks and from what I've found this seems to be a fairly common combination - Skywatcher Evostar 80ED DS-Pro & HEQ5 PRO.

What are people's thoughts, is there anything better at a similar outlay? I'll be using either a 6D or 5D3 so there will be a bit of weight hanging off it.

I have found the more I look the more confusing it is, and although there may be threads already on here the search facility never seems to work as expected.

Stupidly I bought a Celestron LCM114 a few years ago. I have never got it working properly, it's never tracked accurately and it's impossible to colimate even with the colimation tool. It's also nowhere near heavy enough to mount anything of a decent size. I might just scrap it.

So I am interested as to peoples thoughts about this setup, whether it will take the weight of a 5D3 and the image quality it is capable of.

Many thanks




  
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calypsob
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Jun 05, 2015 19:25 |  #2

The Heq5 pro would be a fine mount to start with. I would highly advise buying a used mount though, they loose value similar to a car. What is your budget for a mount?

The evostar will not do well with a full frame camera however. The illumination circle on the evostar will be too small and vignette the sensor. You would be alot better off with a skywatcher Espirit 80mm or better yet a TMB92mm, which is an F5.. Much faster optics than either skywatcher. Also, telescopes can utilize reducer/flattener combos which are a bit foreign to the camera lens world. You could drop the TMB 92 from an F5 to F4.4 which would make it pretty much an astrograph. Until you get an autoguider setup, the faster focal lengths will allow shorter exposure times.


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thc1979
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Jun 06, 2015 15:11 as a reply to  @ calypsob's post |  #3

Thanks calypsob, I have seen on many sites people with the EQ5 and Skywatcher 80ED setup - I had just assumed this was a pretty good start. I had a quick google of the TMB92mm but from a VERY quick look I think I might struggle to find one in the UK, however the Skywatcher Esprit 80mm is more available, and priced at about £1000. I was looking to spend around £1500 which might be possible if I can find a used HEQ5. I am assuming the TMB92 is dearer than the Skywatcher Esprit 80 ?

There was a used setup on eBay which was listed as assembled but never used but when I questioned why it hadn't been used in 18 months the bloke went off on one about how he was ill and "best you don't bid". I can only assume his illness was a mental one, as without my crystal ball I would have no idea he was ill. He blocked me from bidding anyway!!!!




  
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Jun 07, 2015 21:50 as a reply to  @ thc1979's post |  #4

yep the skywatcher 80ed is fine on a smaller aps-c but on a full frame it will vignette beyond repairability in your images. I found this earlier, an alternative to the espirit http://www.teleskop-express.de …-FPL-53---3--Focuser.html (external link) they make a full frame field flattener which will allow round stars to the edges. The reducer I mentioned earlier reduces focal lenght, opens aperture and flattens the field if you buy a flattener/ reducer combo. Just be sure to buy a full frame variant like they list in the Teleskop express link above. Teleskop service has some awesome stuff, we cannot get alot of the stuff they offer in the states without paying shipping and loosing alot to the exchange rate. I would really take advantage of that site from where you are.

As for a used mount, alot of times you find good deals because retired people get into the hobby, get sick, and sell their stuff. It doesn't happen alot but I have purchased several pieces of equipment from old guys with bad backs or medical bills, yikes, getting old is scary. I suggest joining star gazers lounge and buying from their classified area. It seems like a ton of people on that site live in the UK so you could probably make some astronomy friends as well. That is your best bet for finding a used mount. Old sick people and normal users just wanting to upgrade to a better mount with higher capacity and what not.


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thc1979
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Jun 09, 2015 08:38 as a reply to  @ calypsob's post |  #5

Thanks Calypsob

I looked at the Teleskop website but its all in foreign. How can I tell if a telescope is going to be compatible with a full frame camera?




  
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Jun 09, 2015 10:53 as a reply to  @ thc1979's post |  #6

There is a button on the top of the page to change the text to english, I'm drooling over one or two scopes on there at the moment!


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Jun 11, 2015 13:40 |  #7

Thanks for all the advice. The more I have looked into it I have realised that full frame cameras are not ideal for photography with a telescope. I will have to look further into it but can see myself selling one or two 5D2's and getting a crop sensor camera, possible even a CCD. There is definitely more to it than just bolting a camera on though!




  
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Post edited over 5 years ago by JohnPh.
     
Jun 11, 2015 16:20 as a reply to  @ thc1979's post |  #8

I've read a little about that problem but not enough to fully understand it, something to do with the image circle not filling the full frame sensor, I'm sure if Wes sees this he might be able to explain it fully. I've got myself a used 550D and it's away being modded for astro work at the moment, looking forward to the autumn and some nice dark skies!


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Jun 11, 2015 19:21 as a reply to  @ JohnPh's post |  #9

The 550d won't vignette with most scopes, it's the larger full frame 36x24mm sensors that cause the problems. You need bigger everything to accommodate a full frame, though they do gather photons a lot better than smaller aps-c's. It just depends on how much you want to spend on the hobby. I usually recommend slowly building up your gear to a full frame unless you can toss out 5 or 6 grand on all of the right gear from the get go, and that's being modest on a full frame budget. You can easily cut that cost innhalf with crop sensor dslrs and still get great results. I really enjoy my 550d, having it modded will serve you very well.


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Jun 15, 2015 16:46 |  #10

Looking at your kit I would just get the mount and use your lenses to start. Just tape the zoom so I doesn't move and you're good to go. See how it goes and what you enjoy capturing. There is a lot of stuff that is fantastic at 200-400 mm, more than enough to keep you busy for a year while you learn.




  
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Jun 16, 2015 10:32 as a reply to  @ Niteclicks's post |  #11

That is exactly what I am leaning towards. The more I look into this the more I realise how specialised this is. Also, once I have bought all the required equipment and am proficient in it and have taken good photos of Jupiter, Andromeda, etc. etc. etc. what then? Take them all again?

I think I might just get an Astrotrac and concentrate on that. At least that way images will be different with different landscapes.




  
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Jun 26, 2015 17:21 as a reply to  @ thc1979's post |  #12

Lol there are thousands of dso's to image. You won't be imaging planets with even an 80ed, you will need a cat, like a c8 or c11 to get the resolution for planets. Astrophotography is a specific technical realm, and only the best canon primes will work out for imaging wide field. As for the astrotrac, it's great but their polar scope is junk, the polarie polar scope is a good replacement.


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Skywatcher Evostar 80ED DS-Pro & HEQ5 PRO
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