You can alter the aperture on a telescope, that is what that smaller centre cap is on most telescope front lens caps. It gives you a two stop reduction in aperture, most useful for the moon and other bright objects
Greetings from a Bortle 8 zone south west of Toronto, Canada. Good info to consider. The one caveat I would offer to aperture is that it’s not a good practice to shoot wide open. Typically for a f/2.8 lens you’ll want to drop it by one stop to f/4. That will help reduce stars that are bloating.
Nice video Nick. Thanks for making it bite sized and informative. Would appreciate it if you could do a post processing video: galaxy imaging using dslr with 72ed and Star Adventurer. I recently got my 72ed. First light was great, after I sorted out the back focus with a T2 extension tube. Will have to buy the field flattener and camera rotator over the summer. Clear skies
Hi Nick. Just what I needed this very useful info and thanks so much. I'm in Glencoe mow camping and it's bortle 2 skies and I've got my astrophotography gear and it's setup. Targeting NGC 7000 this week so fingers crossed for clear skies. In Wright what settings should I use? In Scotland it doesn't get dark enough. Thanks so much for your help and advice last year!!! I hope you get clear skies in June then into July! Stay safe buddy!
Thanks for the informative video. However I don't really understand the bit about having to stop down when when you're in a light polluted area. Surely you can leave it open, and just decrease your shutter speed to get the same "overall" exposure. It would also minimise any possible star trailing. The only advantage I can think of is to get more into the sweet spot of the lens, but then that would be true in the low Bortle area as well.
When you said you always use iso 1600 on moonless nights, what's the reason for this? How does that factor against exposure length? Is it dependent on lp levels? I'm bortle 5, not crazy bad but still an issue. Great video :)
800 is the optimum you’re absolutely right. I’m lucky to have decent skies here so when the sky is darker (with no moon) I bump the ISO to 1600 as the DSO always pops more. Noise becomes more of a problem though so it’s finding the right setting for you
@@AstroExploring I shall definitely try it after the summer! More subs to make up for less exposure too I guess. Hopefully dithering/calibration will sort the increase in noise
@@AstroExploring Yeah, I’m with you on that, I use a modded T3i. That said, I’m looking at picking up a 6D (fixed screen 😒) to have a Full Frame in the line up too. Old model but I understand they are quite capable for astrophotography. I guess I’ll find out.
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Brilliant video thank you, it’s given me so much to work with.
Great info! Cheers Mate!
Good informative video mate! Hope you are well and getting some good clear skies down there!
Thanks mate 👍🏻
You can alter the aperture on a telescope, that is what that smaller centre cap is on most telescope front lens caps. It gives you a two stop reduction in aperture, most useful for the moon and other bright objects
Greetings from a Bortle 8 zone south west of Toronto, Canada. Good info to consider. The one caveat I would offer to aperture is that it’s not a good practice to shoot wide open. Typically for a f/2.8 lens you’ll want to drop it by one stop to f/4. That will help reduce stars that are bloating.
Yes you’re absolutely right! F/2.8 works fine for me in my location but under a Bortle 8 you’ll definitely need to stop it down
Nice video Nick. Thanks for making it bite sized and informative. Would appreciate it if you could do a post processing video: galaxy imaging using dslr with 72ed and Star Adventurer. I recently got my 72ed. First light was great, after I sorted out the back focus with a T2 extension tube. Will have to buy the field flattener and camera rotator over the summer. Clear skies
I don’t have any decent (in my opinion) galaxy images at the moment but when I do I’ll definitely do one
Hey Nick another informative video great
Thanks Mike!
Hi Nick. Just what I needed this very useful info and thanks so much.
I'm in Glencoe mow camping and it's bortle 2 skies and I've got my astrophotography gear and it's setup.
Targeting NGC 7000 this week so fingers crossed for clear skies.
In Wright what settings should I use? In Scotland it doesn't get dark enough.
Thanks so much for your help and advice last year!!!
I hope you get clear skies in June then into July!
Stay safe buddy!
I would love to visit a Bortle 2 area! Exmoor or Dartmoor are the closest dark sky locations that I can get to easily
another great video
Thanks!
Thanks for the informative video.
However I don't really understand the bit about having to stop down when when you're in a light polluted area.
Surely you can leave it open, and just decrease your shutter speed to get the same "overall" exposure.
It would also minimise any possible star trailing.
The only advantage I can think of is to get more into the sweet spot of the lens, but then that would be true in the low Bortle area as well.
My apologies, you’re absolutely right!
When you said you always use iso 1600 on moonless nights, what's the reason for this? How does that factor against exposure length? Is it dependent on lp levels? I'm bortle 5, not crazy bad but still an issue.
Great video :)
I have 600d and always use iso 800 as I read it was optimum for that dslr. Happy to be taught something I didn't know though!
800 is the optimum you’re absolutely right. I’m lucky to have decent skies here so when the sky is darker (with no moon) I bump the ISO to 1600 as the DSO always pops more. Noise becomes more of a problem though so it’s finding the right setting for you
@@AstroExploring I shall definitely try it after the summer! More subs to make up for less exposure too I guess. Hopefully dithering/calibration will sort the increase in noise
Where do I set up a Tracker in the S Hemisphere>> we have no Polaris star in South Africa
Hey Nick, what’s your “Go To” DSLR for astrophotography?
I use a Canon 650D but anything with a flip out screen 👍🏻
@@AstroExploring Yeah, I’m with you on that, I use a modded T3i. That said, I’m looking at picking up a 6D (fixed screen 😒) to have a Full Frame in the line up too. Old model but I understand they are quite capable for astrophotography. I guess I’ll find out.