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FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
Thread started 27 Oct 2010 (Wednesday) 15:45
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You don't need a telescope

 
Tyguy
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Mar 27, 2017 12:29 |  #2071

From a week ago. Clouds were gone very briefly, it's been cloudy every night this past month! Testing a home-built tracking mount, 7D + 80-200 F2.8L, 3x 30s subs (with darks as well).

IMAGE: https://c1.staticflickr.com/4/3835/33155317350_c67bcf11b8_b.jpg
IMAGE LINK: https://flic.kr/p/SvPE​JA  (external link) 2017-03-18 Orion Nebula 001 (external link) by Tyler Gerritsen (external link), on Flickr

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Roy ­ A. ­ Rust
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Apr 11, 2017 01:59 |  #2072

Tyguy wrote in post #18312355 (external link)
From a week ago. Clouds were gone very briefly, it's been cloudy every night this past month! Testing a home-built tracking mount, 7D + 80-200 F2.8L, 3x 30s subs (with darks as well).

QUOTED IMAGE
IMAGE LINK: https://flic.kr/p/SvPE​JA  (external link) 2017-03-18 Orion Nebula 001 (external link) by Tyler Gerritsen (external link), on Flickr

Good job! Nice detail and sharp stars, too. You didn't get that shot from near Calgary, though, did you? Less than 50 miles would get you to some dark sites.

What kind of home made tracking mount? I used to use what's called a Scotch Mount, or a barn-door mount. The third one I made had a chronometer-controlled motor to drive it, and it was pretty good, but was very easy to bump and misalign it. Polar alignment was also a guestimate, too. That was before I got a commercially-made tracker and a decent tripod.




  
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basketballfreak6
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Apr 11, 2017 07:42 |  #2073

Scrumhalf wrote in post #18296054 (external link)
Wow, there's some super stuff on this page! Tony, do you use an LP filter? I am in the middle of the city too and want to get some DSO shots but I've not bothered to try so far because I am afraid everything will be washed out.

hi Sam sorry i only saw this now, yea i did use a LP filter, astronomik cls clip in


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KeithS
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Apr 11, 2017 19:32 |  #2074

I know a tad more than squat about astrophotography. Would a decent tracking mount with a 600 f/4 mounted allow for any successful planetary or deep space photography?




  
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Tyguy
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Apr 11, 2017 23:49 as a reply to  @ Roy A. Rust's post |  #2075

Thanks! 55 miles northeast of Calgary, in my backyard in Linden :) There's some benefit to living in a small community far from major light pollution sources.

The mount is a bit of a hybrid barn-door / equatorial mount with a little microcontroller to run the stepper motor. Here's a bit more info: https://gerritsendesig​n.wordpress.com/2017/0​1/07/tracker-v2-1/ (external link). I align it with a red dot sight, at 300mm the setup works quite well.


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calypsob
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Apr 16, 2017 15:27 |  #2076

You just need a good lens

smc pentax 50mm f1.4 @ f4

IMAGE: https://c1.staticflickr.com/6/5552/31103940040_6be42a0c4f.jpg
IMAGE LINK: https://flic.kr/p/PoxP​Jh  (external link) Andromeda and Triangulum and the Intrastellar IFN (external link) by Wes Schwarz (external link), on Flickr
Samyang 135mm f2 @F2
IMAGE: https://c1.staticflickr.com/6/5337/31140444555_3e1b8b63fd.jpg
IMAGE LINK: https://flic.kr/p/PrLV​ft  (external link) Orion and Horsehead V.II (external link) by Wes Schwarz (external link), on Flickr
Samyang 135mm f2 @F2
IMAGE: https://c1.staticflickr.com/6/5053/30200094845_e9019c6d05.jpg
IMAGE LINK: https://flic.kr/p/N1Fo​3r  (external link) Tone mapping and selective color in #Snapseed (external link) by Wes Schwarz (external link), on Flickr
Samyang 135mm f2 @F2
IMAGE: https://c1.staticflickr.com/6/5575/30727939825_6993a3f0f1.jpg
IMAGE LINK: https://flic.kr/p/NPjH​XX  (external link) Witch Head Nebula IC2118 process Version III (external link) by Wes Schwarz (external link), on Flickr
Samyang 135mm f2 @F2
IMAGE: https://c1.staticflickr.com/6/5573/30825037053_5547465538.jpg
IMAGE LINK: https://flic.kr/p/NXUn​A6  (external link) M45 and California (external link) by Wes Schwarz (external link), on Flickr
Samyang 135mm f2 @F2
IMAGE: https://c1.staticflickr.com/3/2858/33193121913_7a9ef0efda.jpg
IMAGE LINK: https://flic.kr/p/Szaq​Hp  (external link) RGB version M81 M82 integrated flux nebula #Explored (external link) by Wes Schwarz (external link), on Flickr

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Madweasel
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May 30, 2017 11:49 |  #2077

Amazing images Wes. Yes, a good lens, but I'm guessing you've got a good dark sky there, not to mention a few hours' worth of exposure.


Mark.

  
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Madweasel
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May 30, 2017 11:57 |  #2078

KeithS wrote in post #18325536 (external link)
I know a tad more than squat about astrophotography. Would a decent tracking mount with a 600 f/4 mounted allow for any successful planetary or deep space photography?

For planetary you need more magnification than that, though you would easily pick out Jupiter's moons, a couple of Jupiter's belts, and Saturn's rings. The 600/4 is great for wider deep-sky subjects though, like the Pleiades:

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pdxbenedetti
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Jun 20, 2017 11:23 |  #2079

Here's a 3 panel mosaic of the Milky Way core and Rho Ophiuchi Complex with my Nikon D800E and Samyang 135mm lens on a Sky Watcher Star Adventurer. I plan on making this a 20-25 panel mosaic covering the area up to the Eagle and Omega Nebula.

IMAGE: https://c1.staticflickr.com/5/4258/35288795641_f7a5f9a1d9_c.jpg
IMAGE LINK: https://flic.kr/p/VLmi​v4  (external link) The Core of Our Galaxy (external link) by Eric (external link), on Flickr

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basketballfreak6
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Sep 11, 2017 00:47 |  #2080

modified 760D + Sigma 135 Art taken in the backyard

IMAGE: https://farm5.staticflickr.com/4423/36761836740_07cd957d96_b.jpg
IMAGE LINK: https://flic.kr/p/Y1w2​io  (external link) Lagoon and Triffid Nebula (external link) by Tony (external link), on Flickr

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Pagman
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Sep 11, 2017 10:14 |  #2081

Is there an easy way to get better detail like those above but without needing a tracker, I have decent gear D7100 with my 300 f4 so the equipment is probably upto the job, my tripod is just about ok, but how can I get several exposures plus darks if I do not use a tracker?

Any ideas how to get near to this without tracking equipment etc?


P.:-)


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Tareq
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Sep 11, 2017 22:17 |  #2082

Pagman wrote in post #18449299 (external link)
Is there an easy way to get better detail like those above but without needing a tracker, I have decent gear D7100 with my 300 f4 so the equipment is probably upto the job, my tripod is just about ok, but how can I get several exposures plus darks if I do not use a tracker?

Any ideas how to get near to this without tracking equipment etc?


P.:-)

Long long time ago in the past i didn't know that tracking was the key for astrophotography, and i tried hard with only tripod, but this year when i got into astronomy forums i found out that i need tracking even for 1-2 seconds if i will have plenty of exposures, so i didn't waste time and i bought a mount.

You can do that without a tracking equipment by tracking manually yourself, but that will limit you to very short exposures, not sure how long you can do without star trailing, i think maybe around 5-10 seconds with your lens, so if you are willing to do it manually and you track the stars you may get something, the shorter the lens i think is the longer you can go without much of stars trailing, 135mm is a good lens as an average, shorter can be use too.

I advise you to buy a tracking device for less headache, even cheap one can get you to start, but sure you will go under many processing like polar alignment and guiding sometimes if necessary and whatever, i am just starting and i hope i can get something when my setup is complete.


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Pagman
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Sep 11, 2017 22:42 |  #2083

Tareq wrote in post #18449856 (external link)
Long long time ago in the past i didn't know that tracking was the key for astrophotography, and i tried hard with only tripod, but this year when i got into astronomy forums i found out that i need tracking even for 1-2 seconds if i will have plenty of exposures, so i didn't waste time and i bought a mount.

You can do that without a tracking equipment by tracking manually yourself, but that will limit you to very short exposures, not sure how long you can do without star trailing, i think maybe around 5-10 seconds with your lens, so if you are willing to do it manually and you track the stars you may get something, the shorter the lens i think is the longer you can go without much of stars trailing, 135mm is a good lens as an average, shorter can be use too.

I advise you to buy a tracking device for less headache, even cheap one can get you to start, but sure you will go under many processing like polar alignment and guiding sometimes if necessary and whatever, i am just starting and i hope i can get something when my setup is complete.


Thank you for the comments and help - its much appreciated.

P.


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Tareq
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Sep 12, 2017 10:34 |  #2084

Pagman wrote in post #18449867 (external link)
Thank you for the comments and help - its much appreciated.

P.

You welcome!


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Scrumhalf
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Sep 12, 2017 12:33 |  #2085

Pagman, I would recommend breaking this learning process into two pieces.

You've got hardware, and you've got post processing, both of which can pose challenges for the beginner. I would put the hardware off for now and focus just on the processing.

First, put a wide angle lens on your camera so that you don't need a tracking mount. You can take relatively long shots without getting star trails if you have a wide angle lens. Take several such shots, take darks, etc. and then learn how to stack shots, deal with noise and light pollution, etc. The advantages of doing this is that a) you don't have to muck around with expensive mounts, learning how to polar align, etc. and just stick with your tripod, and b) you don't really need to find your way around the sky, which can be a learning process in itself, unless you are an experienced visual stargazer, in which case this does not apply to you. All you've got to do is to find a relatively dark place, point the camera at a relatively rich part of the sky and shoot away.

Once you've figured out how to do the processing and are getting good at taking shots of star fields, then you can focus on getting a better mount so that you can take shots of deep sky objects with your 300mm. You also would need to get reasonably good at finding things in the sky (or you can get a go-to mount, in which case you basically punch in the name or Messier/NGC number of your object and the mount does the finding for you).


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You don't need a telescope
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