DTWSAN
Topic Author
Posts: 13
Joined: Wed Jun 18, 2014 4:58 am

If you had a good telescope...

Sun Mar 19, 2017 1:22 am

And pointed it at a plane 39000 ft up could you see the airline name?
Last edited by atcsundevil on Mon Mar 27, 2017 10:11 pm, edited 1 time in total.
Reason: Edited spelling
 
JohnJ
Posts: 1373
Joined: Tue Jun 27, 2000 5:01 am

Re: if you had a go od telescope...

Sun Mar 19, 2017 1:45 am

Sure. Planes come over my house at around 24,000 feet and I can get pretty clear shots of them with a 400mm camere lens, which is the rough equivalent of a medium-power set of binoculars.
 
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BobPatterson
Posts: 2890
Joined: Thu Nov 26, 2015 7:18 am

Re: if you had a go od telescope...

Sun Mar 19, 2017 2:53 am

Here's a video that might give some perspective, and also an earlier thread on airliners.net with some info:

Airbus A380 at 40,000 feet through 1000mm Telescope Dörr Orion 200 : https://www.youtube.com/watch?v=jphdeW3NNqA

Best lenses for spotting aircraft at 35,000 feet : viewtopic.php?t=919313

Hope this helps to get started doing research using Google, etc.
Facts are fragile things. Treat them with care. Sources are important. Alternative facts do not exist.
 
MSPNWA
Posts: 2242
Joined: Thu Apr 23, 2009 2:48 am

Re: if you had a go od telescope...

Sun Mar 19, 2017 6:21 am

DTWSAN wrote:
and pointed it at a plane 39000 ft up could you see the airline name?


I've been watching airliners through my telescopes for years, before I had a flight tracker at my disposal to know exactly what I was looking at. It's fun. I wish I would have had FlightAware back when I first started.

The short answer to your question is "maybe". The video posted about gives you a good idea of what a telescope will show you under good conditions. It's tough to track an airline smoothly, but you can see things. With clear skies, it's pretty easy to decipher the operator and airplane type if you recognize it. The closer it is, the more detail you can spot. If a plane is right overhead, even at high cruise you might be able to read the registration if the carrier has it under the wing. Things like that are fun challenges.
 
edmaircraft
Posts: 110
Joined: Mon Dec 15, 2014 1:40 am

Re: if you had a go od telescope...

Sun Mar 19, 2017 6:37 am

Why not? Depending on the aircraft and airline (logo placement and size varies) and the visibility, I don't see why not. I have a Panasonic FZ70 that has a lens that equates to 20-1200mm, and despite the poor resolution due to the digital zoom, I can often read registrations of aircraft overhead. The logos are clearer for aircraft that are between 200 and 280 than they are for aircraft between 300 and 410 though, of course.
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