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Oct 23, 2019 08:36:44   #
It can also mean, comments / critiques.

Further more, if you want to make a million bucks with photography start with 2 million.
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Oct 22, 2019 10:23:44   #
Camped in a park or boondocking?
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Oct 10, 2019 08:12:47   #
Great shots! Thanks, now I'm homesick again.
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Oct 8, 2019 16:31:26   #
You pressed the letter "i" (information) press "i" again for a 3 way toggle of different information.
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Oct 3, 2019 16:53:33   #
leftj wrote:
I heard Topo Gigio is pretty good.


Whoa! That brings back memories of Sunday nights long ago.
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Oct 1, 2019 11:41:24   #
Did you, per chance, have your anti shake turned on in the lens? I have screwed up many a shot forgetting to turn that off when on a tripod.
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Sep 19, 2019 14:09:33   #
Sark17 wrote:
Okay so last night I was simply trying to practice with my Intervalometer. I aimed it at the stars and did 30 30 second shots, 5 seconds apart at f/8 ISO 1250 bulb mode. Why are there no star trails? I was using the Canon EF 14mm 1:2.8 L that I mentioned in the OP and the EOS R. I wasn’t trying to have a nice scene or anything, just practicing with my new timer, but I figured I’d have at least some star trails at 30 seconds?


It's good to practice first but the intervalometer is not night dependent, leave the lens cap on and practice in the day. To save the batteries switch your parameters to a 5 second exposure every 35 seconds. As for the star trails, how about we just try for a single good quality shot of the stars first and then expand our horizons.

You used f/8 when you should have been using f/2.8 or the widest aperture your lens allows. Use the 500 rule to acquire sharp stars. 500 divided by the focal length of the lens which in your case is 500/14=35.714 or 36 seconds if using a full frame camera and if using a APS-C first multiply the focal length, in your case a Canon, by 1.6 so 14*1.6=22.4 then the 500 rule 500/22.4=22.321 or 22 seconds.

Try setting your ISO to 1600 at 22 seconds and if the sky comes out too light then shift it back to 800 at 22 seconds which is simply a 1 stop difference and see what that looks like. You want to find a nice balance between dark sky and light stars to save time and effort in post.

All that said, if you truly want star trails then you can leave the shutter open for as long as your batteries and sensor hold out. But, to save your sensor from over heating use shorter times such as 1-2 minutes, f/2.8 and either 200 or 400 ISO, depending on what you think looks good, (note: increasing the shutter speed means lowering the ISO to get equivalent results, decreasing ISO means less noise to deal with) and then stack the results.

Assuming you like the results from 22 seconds at 1600 ISO then;
44 seconds requires 800 ISO
88 seconds (1 min, 28 sec) requires 400 ISO
176 seconds (2 min, 56 sec) requires 200 ISO
At longer times a few seconds over or under will not show any real difference.
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Sep 19, 2019 09:10:13   #
Marketing is everything.
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Sep 18, 2019 15:53:03   #
The milky way will be visible from NE to SW with the core being in the SW. Not knowing your location means this info is only approximate for the ET zone in NA.

To get sharp points on your stars use a shutter of 20-25 seconds, wide open aperture and an ISO that is high enough but not so high that the noise is unacceptable. Knowing that max is up to your discretion. No you will not see what the camera does as your eyes work like a video, now you see it now it's changed. Your camera on the other hand just keeps letting light onto the sensor.

I suggest for the first time shooting to the SW where your eye "can" see the milky way just not the way the camera does. Good luck and we look forward to seeing the results.
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Sep 16, 2019 16:26:17   #
I would concur with PS77 and it would give you all around coverage. That 1.4 TC might come in handy in some instances but that means changing in the field. I did that on a "few" occasions but you do have to pick your times. Have fun and we look forward to some great shots.
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Sep 16, 2019 09:16:15   #
SonnyE wrote:
Hi Peter,
In my experiences, spacing with extensions permit achieving focusing. Play nothing in magnification.
When I was beginning, frustrated with trying to achieve any semblance of focusing, I held my camera behind my telescope and moved it further away, and closer in. That was how I discovered I needed about 4 inches of tube to get near focus so I could adjust with my telescopes focuser.
---snip---

You will want the 2" so it does not impede your sensors FOV.

Using Live View can definitely help you to adjust your focusing. Do experiment with it. But you need to get close first mechanically. Hence, you may need a spacing tube.
Hi Peter, br In my experiences, spacing with exten... (show quote)


Wild, I did notice that to get what I did I had to turn the crap out of the focus knob. I will give the extension a go and see what happens. Thanks for the words of wisdom.
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Sep 16, 2019 09:12:31   #
Railfan_Bill wrote:
As suggested by Sonny, you can you the live view, but use the 5x or 10 x magnifier on the camera. Another way is to use a old handheld slide viewer that was used to magnify film slides. But be careful with adjusting the focus, ANY MOVEMENT will cause the "shakes" in the finder. You just got to let it simmer down to get a good view. Don't give up! Astrophotography is a daunting hobby and it requires much patience. Keep at it! RFB


Thanks for the words of encouragement. I assume you are referring to a loop to view the live view screen and not a slide viewer, yes?
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Sep 16, 2019 09:09:58   #
Europa wrote:
You can get things like a Barlow or a Powemate to magnify. Notice there is a difference between the two on how it affects the f number.


At the moment I do have a Barlow but I see no way to connect it to the camera. Is this even an option with a Barlow or Powermate?
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Sep 6, 2019 11:20:39   #
2 queries for all you in the know:
1. can I use an extension tube or something to increase (or decrease) the magnification for the camera sensor?
2. can I use live view zoomed in to achieve focus? I did use it last night but the image was rather dark and I opted for using the viewfinder. Normally I use the viewfinder with my glasses on but find using the telescope it's best to take glasses off. Any consensus using a camera with telescope? I suppose I could turn on the auto live view exposure thingy so I can choose a proper exposure, yes?
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Sep 5, 2019 21:34:48   #
The skies cleared this evening so I managed to align the scope and then locked on the moon. Then connected the dslr and it took 9 shots to get this soft image. I'm assuming one can't zoom in and out like the eyepieces but can only shoot at the telescopes prime focal length and aperture, correct? Is it the same when I use the CCD camera? Anyway, so looking forward to0 more clear skies to hone in on the focusing skills. Be kind, it's my first time.


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