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Gem Mount Astro Photo

astro stars gem night

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#1 PeterPP

PeterPP

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Posted 07 September 2016 - 11:49 PM

Well after all the talk going on I finally pulled out the ancient scope mount from the shed and bolted a camera to it

Did a rough polar align, did not bother with doing a drift align for such a short focal length. Anyway here are a couple of quick results

 

Both are single images, with dark and bias frames manually applied in PS, and annotated by http://astrometry.net/

 

First image: is Polaris since scope was pointing at it anyway during alignment.

Second image: is delta Cassiopeiae (ruchbah) / m-103 

About the only 2 targets easily visible from my  backyard at the time.

 

Will have to haul it out again as winter comes and more things show up overhead.

 

Great thing is with qdslrdashboard app on windows and a 15 foot usb cable I can control the camera from indoors :)

 

Third image: ere is the camera attached to the old skywatcher EQ5 scope mount

 

Forth and fifth images: are samples of what the original files looked like

 

Sixth image: and finally what DSS did with it, rather disappointing.

I like my single images better and it seems to have turned the stars green.

Suspect I am doing something wrong. 

 

DSS input

Light frames 20 total 830 seconds exposure (13.8 minutes)
6 x 3200 * 30s
2 x 6400 * 30s
2 x 3200 * 60s
10 x 3200 * 2s
 
dark frames 16 
Bias frames 42
 
Oh well here's to the looming long chilly nights of winter.

Attached Thumbnails

  • Polaris_web.jpg
  • Cassiopeiae_web.jpg
  • night_mount-1.jpg
  • polaris_noproc.jpg
  • cassiopeiae_noproc.jpg
  • cassiopeiae_dss.jpg

 Peter

Locked out of forums and can't get back in.Siobhan sent me email that they are no longer doing anything with the forums site and to use the FB group instead.

Oh woe


#2 rospondek

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Posted 08 September 2016 - 12:49 PM

Sweet mount :)
For DSS try to start with this settings - second third part.
dss.jpg
Then the first one - just slide each of the RGB levels that they're ending where the luminance curve is starting to rise.
Then you can begin to tweak it or export this based image to PS/LR and there enhance it.

 

P.S.

You've got double cluster nearby to catch :)

What lens did you have?



#3 PeterPP

PeterPP

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    Canon 24-105 f/4L IS
    Canon 70-200 f/4L IS
    Canon 50mm f/1.8
    Canon 24mm f/2.8 STM
    Canon 10-18 IS STM
    Sigma 150mm f/2.8 macro
    Sigma 120-300 f/2.8,
    Tamron 28-75 f/2.8
    Bower 8mm f/3.5 fisheye
    Sony 18-55
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    Alien-Bee abr800 ring flash
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Posted 08 September 2016 - 01:39 PM

I'll have to retry DSS trying these settings.

The lens I used is a Sigma 120-300 f/2.8

 

This fellow took an amazing image of Andromeda galaxy with a Pentax K1 and a 250-600mm lens, shows what is possible for people in their back yards :)

https://www.flickr.c...on/29424524601/


 Peter

Locked out of forums and can't get back in.Siobhan sent me email that they are no longer doing anything with the forums site and to use the FB group instead.

Oh woe


#4 rospondek

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    AF-S NIKKOR 50mm f/1.4G
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Posted 08 September 2016 - 02:44 PM

Single frame... That's impressive...

But the backyard have to be outside any big city :)



#5 PeterPP

PeterPP

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    Canon 70-200 f/4L IS
    Canon 50mm f/1.8
    Canon 24mm f/2.8 STM
    Canon 10-18 IS STM
    Sigma 150mm f/2.8 macro
    Sigma 120-300 f/2.8,
    Tamron 28-75 f/2.8
    Bower 8mm f/3.5 fisheye
    Sony 18-55
    .
  • Flashes:.
    Sigma 500 dg super * 2
    Yongnuo yn-14ex ring fl
    Vivitar 3700
    White-Lightning x1600 * 2
    White-Lightning x800
    Alien-Bee abr800 ring flash
    .
  • Camera Body or Bodies:.
    Canon EOS 7d mkii
    Canon EOS 5d mkii
    Canon EOS xti
    Canon EOS 20d
    Sony NEX 5R
    GoPro Hero2
    Canon SX280HS
    .

Posted 09 September 2016 - 01:24 AM

Reprocessed stack in DSS with new settings. 

Seems a  difference, and green cast gone!

 

Attached Thumbnails

  • Cassiopeiae_stack_web.jpg

 Peter

Locked out of forums and can't get back in.Siobhan sent me email that they are no longer doing anything with the forums site and to use the FB group instead.

Oh woe


#6 David Pavlich

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Posted 09 September 2016 - 11:12 AM

If you haven't already, check out just about anything from Jerry Lodriguss.  He's forgotten more about DSLR astro-imaging than most know.

 

http://astropix.com/

 

David


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