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Thread started 29 Jul 2010 (Thursday) 01:36
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Samyang Rokinon Vivitar 14 2.8 lens

 
Agustin.Reyes
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Joined Apr 2012
Coronado, CA
Feb 19, 2017 23:22 |  #4771

Got to get the hang of the focus, not the lens itself but the distance calculation, I'm really bad at it hahaha

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Canon 60D | Canon 5Dc
Samyang 14mm f/2.8 | Canon 16-35L f/2.8 III | 50mm f/1.8 STM | 70-200L f/2.8 IS USM

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merida
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Joined Sep 2011
MaƂopolska
Feb 24, 2017 12:11 |  #4772

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Jpatten
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Joined Jan 2008
Georgia, United States
Feb 24, 2017 12:14 |  #4773

Orion

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Shooting with canon rebel T5 or Canon Rebel XS.
Kit 18-55mm, 18-55mm IS, Sigma 70-300mm APO Macro lens, Canon 60mm f2.8, nifty 50 and Speedlite 600EX-RT (Flash) Rokino 14mm f2.8 UltraWide
My 365 Blog http://jayrayphotos.bl​ogspot.com (external link)

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Scrumhalf
Cream of the Crop
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Joined Jul 2012
Portland OR USA
Feb 24, 2017 13:08 |  #4774

I'm seeing a little bit of star trails. How long was the exposure?


Sam
6D | 7D2 (2 bodies) | Reasonably good glass
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If I don't get the shots I want with the gear I have, the only optics I need to examine is the mirror on the bathroom wall. The root cause will be there.

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Jpatten
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Joined Jan 2008
Georgia, United States
Post has been edited 7 months ago by Jpatten.
Feb 24, 2017 13:11 as a reply to Scrumhalf's post |  #4775

One or two minutes, I can't remember for certain on that exposure. But it was the best of the bunch I tried to take. I may see if I can find a copy of the stacking program I used to have and try to get some stacked images with much shorter times to avoid that.

Light Pollution is a REAL problem around here


Shooting with canon rebel T5 or Canon Rebel XS.
Kit 18-55mm, 18-55mm IS, Sigma 70-300mm APO Macro lens, Canon 60mm f2.8, nifty 50 and Speedlite 600EX-RT (Flash) Rokino 14mm f2.8 UltraWide
My 365 Blog http://jayrayphotos.bl​ogspot.com (external link)

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Intheswamp
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Joined Sep 2013
South Alabama
Feb 24, 2017 13:23 |  #4776

Jpatten wrote in post #18283953 (external link)
One or two minutes, I can't remember for certain on that exposure. But it was the best of the bunch I tried to take. I may see if I can find a copy of the stacking program I used to have and try to get some stacked images with much shorter times to avoid that.

Light Pollution is a REAL problem around here

Here ya go. You may have already read this webpage, it gives some good info on minimizing blurred stars.
https://petapixel.com ...rails-following-500-rule/ (external link)

Best wishes,
Ed


www.beeweather.comexternal link

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Jpatten
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Joined Jan 2008
Georgia, United States
Feb 24, 2017 13:37 as a reply to Intheswamp's post |  #4777

I will have to remember that. Limit to about 20 seconds with my 14mm and maybe do some stacking to pull out more detail... I need ot practice that anyway. Of course that means a REALLY short time if I use my 300mm


Shooting with canon rebel T5 or Canon Rebel XS.
Kit 18-55mm, 18-55mm IS, Sigma 70-300mm APO Macro lens, Canon 60mm f2.8, nifty 50 and Speedlite 600EX-RT (Flash) Rokino 14mm f2.8 UltraWide
My 365 Blog http://jayrayphotos.bl​ogspot.com (external link)

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Intheswamp
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Joined Sep 2013
South Alabama
Feb 24, 2017 13:46 |  #4778

Jpatten wrote in post #18283973 (external link)
I will have to remember that. Limit to about 20 seconds with my 14mm and maybe do some stacking to pull out more detail... I need ot practice that anyway. Of course that means a REALLY short time if I use my 300mm

With the crop factor 20 seconds will give you a tad of buffer so sounds good to me. You should be able to get *lots* of stars with a 20-sec exposure. It always amazes me how many stars show up with a single exposure. I will say that I'm in a fairly dark area...not the darkest but out away from really big cities. Your 300mm...about a 1-sec exposure....this is when tracking apparatus and stacking comes into play. :)

Have fun experimenting...
Ed


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Jpatten
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Joined Jan 2008
Georgia, United States
Feb 24, 2017 13:54 as a reply to Intheswamp's post |  #4779

YEah, I dont have any tracking ability.. So I will have to stack.


Shooting with canon rebel T5 or Canon Rebel XS.
Kit 18-55mm, 18-55mm IS, Sigma 70-300mm APO Macro lens, Canon 60mm f2.8, nifty 50 and Speedlite 600EX-RT (Flash) Rokino 14mm f2.8 UltraWide
My 365 Blog http://jayrayphotos.bl​ogspot.com (external link)

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Tareq
"I am very lazy, a normal consumer"
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17,657 posts
Gallery: 2 photos
Joined Jan 2006
Ajman - UAE
Feb 25, 2017 00:43 |  #4780

Nice, i didn't come here for a while, and i started to read about Astrophotography since 2 weeks when i bought a scope then returned it next day due to many replied on astronomy forum telling me that it is not suitable for AP, and after some discussion i decided to buy a mount only i hope soon so i can practice with my DSLR first, then later when i can afford i can get the scope too.


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Jpatten
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Joined Jan 2008
Georgia, United States
Feb 25, 2017 08:23 |  #4781

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Shooting with canon rebel T5 or Canon Rebel XS.
Kit 18-55mm, 18-55mm IS, Sigma 70-300mm APO Macro lens, Canon 60mm f2.8, nifty 50 and Speedlite 600EX-RT (Flash) Rokino 14mm f2.8 UltraWide
My 365 Blog http://jayrayphotos.bl​ogspot.com (external link)

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Scrumhalf
Cream of the Crop
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Joined Jul 2012
Portland OR USA
Feb 25, 2017 11:00 |  #4782

Tareq wrote in post #18284445 (external link)
Nice, i didn't come here for a while, and i started to read about Astrophotography since 2 weeks when i bought a scope then returned it next day due to many replied on astronomy forum telling me that it is not suitable for AP, and after some discussion i decided to buy a mount only i hope soon so i can practice with my DSLR first, then later when i can afford i can get the scope too.

I think you did the right thing. Get a tracking mount and put your camera on it and learn how orient your mount, take long shots, stack them and do the post processing. You can do so much with just a DSLR. Once you got all of these under your belt, then worry about the scope. Scopes can get pretty expensive, especially if you get an apo refractor or something like that.


Sam
6D | 7D2 (2 bodies) | Reasonably good glass
Gear List

flickr (external link)
If I don't get the shots I want with the gear I have, the only optics I need to examine is the mirror on the bathroom wall. The root cause will be there.

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Tareq
"I am very lazy, a normal consumer"
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17,657 posts
Gallery: 2 photos
Joined Jan 2006
Ajman - UAE
Feb 25, 2017 14:09 |  #4783

Scrumhalf wrote in post #18284712 (external link)
I think you did the right thing. Get a tracking mount and put your camera on it and learn how orient your mount, take long shots, stack them and do the post processing. You can do so much with just a DSLR. Once you got all of these under your belt, then worry about the scope. Scopes can get pretty expensive, especially if you get an apo refractor or something like that.

The mount i chose is already expensive, so the scope is not much worse expensive.

Also, i chose one scope APO refractor, not that much fast but it is a good start, they said it is fast for its price, f/5, i saw similar with f/6, but as long they told me to go with nice mount so they told me to go with fast, faster is better as they said, i asked them what will be the difference between f5 and f6 if both are same FL and diameter, someone answered long, so it is like i should't think much and go with that f5 and done with it for long and i will recover from the spending.

I can't wait to get the mount, i told them i can't or i won't buy it now even if i have the budget, but by April i will have good enough budget so i plan to buy it in April, i will keep reading about stacking and filtration and modification if necessary and also post processing, will see how far i can go with AP.


Galleries:
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oximuis
Senior Member
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Joined Sep 2014
Beaufort SC
Feb 28, 2017 18:11 |  #4784

Cannot focus to save my life with this lens... please help!!! :-)


Canon 5D Mark IV,Canon 7D Mark II, Canon 50mm 1.8, Canon 100-400 Mark II L, Canon 24-70 Mark II, Tokina16-28, Tamron70-200mm f/2.8 Di VC, Samyang 14mm 2.8

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RhodyPhotos
Senior Member
Joined Jun 2014
providence, ri
Feb 28, 2017 18:16 as a reply to oximuis's post |  #4785

Use live view and zoom into the area you want to focus on.




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Samyang Rokinon Vivitar 14 2.8 lens
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