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FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
Thread started 20 Jan 2012 (Friday) 07:55
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Andromeda galaxy from low-end 55-250 IS

 
Cygnusx1
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Jan 21, 2012 13:32 |  #16

Amazing. I am starting to yearn for a tracker...and that's not a good thing for my wallet.


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ramv
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Jan 21, 2012 13:36 |  #17

Nice images! and a very nice portable imaging set up.
Are you autoguiding these?




  
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huangyu84
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Jan 21, 2012 13:39 |  #18

ramv wrote in post #13743590 (external link)
Nice images! and a very nice portable imaging set up.
Are you autoguiding these?

All were unguided. I want to simplify the portable setup as much as possible, that's why I took out auto-guiding as a consideration.




  
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bubbygator
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Jan 21, 2012 13:54 |  #19

If you'll pardon the question of a non-astro... what are those brownish circles??


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S.n.a.f.u.
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Jan 21, 2012 13:57 |  #20

wow i wouldn't have guess that was with a 55-250, nice photos.


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Mark ­ Brim
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Jan 22, 2012 09:43 |  #21

Is your Dslr modded?


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Bernoulli
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Jan 22, 2012 11:16 |  #22

bubbygator wrote in post #13743652 (external link)
If you'll pardon the question of a non-astro... what are those brownish circles??

Those are dusty areas in the galaxy. Hence the brown. Our solar system was born in a region like this, the dust provides stuff to make planets.


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bubbygator
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Jan 22, 2012 14:25 |  #23

Thanks... wow, that's a LOT of dust!


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Frankie_82
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Jan 26, 2012 12:13 |  #24

These are great shots, well done to you.

The astrotrac has been on my shopping list for quite a while now. Great to see results this impressive can be obtained with a lower end lens


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roxiedog13
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Jan 27, 2012 08:09 as a reply to  @ Frankie_82's post |  #25

All of these taken with the 250mm and a FF or crop ?

Very impressive I should have added.

Can you elaborate how many exposures, how long each and how your put this all together ?

My night sky where I live is truely unreal. Absolute darkness and without any kind of light or other forms of pollution to speak of.
Now, coordinating a night without clouds is another story. Can't have it all .




  
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Astromain69
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Jan 28, 2012 08:04 |  #26

Wow! I had no idea you can achieve this type of result with a relatively inexpensive lens!

Can I just check, the lens used was a Canon EF-S 55-250mm f4/5.6 IS?

Thanks

Astromain69




  
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huangyu84
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Jan 28, 2012 10:30 |  #27

Mark Brim wrote in post #13747646 (external link)
Is your Dslr modded?

Unmodified Canon T3.




  
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huangyu84
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Jan 28, 2012 10:35 |  #28

roxiedog13 wrote in post #13777371 (external link)
All of these taken with the 250mm and a FF or crop ?

Very impressive I should have added.

Can you elaborate how many exposures, how long each and how your put this all together ?

My night sky where I live is truely unreal. Absolute darkness and without any kind of light or other forms of pollution to speak of.
Now, coordinating a night without clouds is another story. Can't have it all .

Yes, all of them were taken with 55-250 IS 250mm wide open. The camera is Canon T3, so its a cropped sensor. Basically, I like T3 considering its relatively large pixel size yielding a better noise control.

Most of the subs were 2min exposure@ ISO400 considering the light pollution. The M42 and M31 image were about 4 hrs integration time in total, respectively.

All subs were stacked in DeepSkyStacker and processed in Photoshop.




  
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huangyu84
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Jan 28, 2012 10:37 |  #29

Astromain69 wrote in post #13782691 (external link)
Wow! I had no idea you can achieve this type of result with a relatively inexpensive lens!

Can I just check, the lens used was a Canon EF-S 55-250mm f4/5.6 IS?

Thanks

Astromain69

Yes, the lens is the canon low-end zoom EF-S 55-250mm f4/5.6 IS. I previously got a bad copy from Amazon which showed a lot of coma in the corner. The replacement from Amazon just works fine as expected. So, if you are going to grab one make sure doing some start test after buying.




  
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omarsultan
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Jan 28, 2012 14:02 as a reply to  @ huangyu84's post |  #30

Wow--just getting into AP and pics like this really inspire me. Still waiting for some bits and pieces to show up so I can give this a try.

Thanks for sharing,

Omar


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Andromeda galaxy from low-end 55-250 IS
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