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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

 
MikeFairbanks
Cream of the Crop
6,428 posts
Joined Jun 2009
     
Jan 28, 2012 22:07 |  #31

Great shot of andromeda. So sad that it's so far away. Would be nice to meet them if physically possible.


Thank you. bw!

  
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roxiedog13
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Jan 29, 2012 06:41 |  #32

huangyu84 wrote in post #13736995 (external link)
Thanks for your comment.
Yes, it was tracked by an Astrotrac portable equatorial mount.It was 2 min exposure per each shot. I'm happy with this setup which only takes me 10 mins to setup and very easy to carry out. It is a great performer.
QUOTED IMAGE

So is a good starting point the AstroTrac TT320X or is there something better to start out with ?

I have an Canon 450 XSi, Canon 17-55 2.8 IS USM, Sigma 70-200ii 2.8 EX DG OS HSM and a Canon 10-22 UWA. I'm going to buy another camera soon, looking at at 7D , 5Dii or A 1D MKii as options.

I see modified DSLR often as well and wondered what that entails ? I also have an older 350 rebel that I could use if permanent modifications would be necessary.




  
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huangyu84
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88 posts
Joined Dec 2011
     
Jan 29, 2012 16:42 |  #33

roxiedog13 wrote in post #13787389 (external link)
So is a good starting point the AstroTrac TT320X or is there something better to start out with ?

I have an Canon 450 XSi, Canon 17-55 2.8 IS USM, Sigma 70-200ii 2.8 EX DG OS HSM and a Canon 10-22 UWA. I'm going to buy another camera soon, looking at at 7D , 5Dii or A 1D MKii as options.

I see modified DSLR often as well and wondered what that entails ? I also have an older 350 rebel that I could use if permanent modifications would be necessary.

IMHO, Astrotrac is a good solution to portable imaging setup but not the best for starter. It definitely requires some experiences of astro-imaging and the knowledge of the sky.
A larger modern go-to mount would be better for starter such as Orion Sirius EQ-G if you are not going to filed quite so often.

A modified DSLR is very sensitive to the H-alpha, therefore good for some emission nebula such as Horse head.




  
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starblighter
Mostly Lurking
14 posts
Joined Jan 2012
     
Jan 30, 2012 05:31 as a reply to  @ huangyu84's post |  #34

Great pictures! It looks like you could just reach out and touch.
I'm considering getting into astro imaging, as well. You seem to have experience with light pollution. What's best to get around that and to have some good clear sky on the final product? Does a red bandpass filter help?




  
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roxiedog13
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Jan 30, 2012 07:23 |  #35

huangyu84 wrote in post #13790072 (external link)
IMHO, Astrotrac is a good solution to portable imaging setup but not the best for starter. It definitely requires some experiences of astro-imaging and the knowledge of the sky.
A larger modern go-to mount would be better for starter such as Orion Sirius EQ-G if you are not going to filed quite so often.

A modified DSLR is very sensitive to the H-alpha, therefore good for some emission nebula such as Horse head.

OK, so I can just buy a Celstron go to Telescope and use the go to mount from that ? Since the package deals are usually great and I enjoy astronomy anyway that may be the best way to go-to.;)
How doe one get a modified DSLR sensitive to the H-alpha ? I have seen plenty of DSLR's converted to IR ( Infrared) and know where to get that done but not for astronomy .




  
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NigelBlake
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183 posts
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Location: Bedfordshire
     
Jan 31, 2012 08:40 |  #36

Fantastic shots!




  
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~spd3~
Hatchling
9 posts
Joined Dec 2011
Location: rhode Island
     
Feb 01, 2012 08:04 |  #37

Wow, Those are some nice shots.




  
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roxiedog13
Member
145 posts
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Feb 08, 2012 21:17 |  #38

huangyu84 wrote in post #13736887 (external link)
total of 4 hrs of integration time from a light polluted sky. I'm planning to put 8 hrs on this target. The 55-250 IS was set to wide open at 250mm. I would say the result of astrophotography is not bad for this low-end zoom lens.
QUOTED IMAGE

Can you elaborate on how you gather the pictures and why so many pictures at 2 min each are stacked to make the final product?




  
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Andromeda galaxy from low-end 55-250 IS
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