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A Different View

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1 year 7 months ago #111649 by Paul-Byrne
A Different View was created by Paul-Byrne
Hi all

On Thursday night I tried out an exercise, wanting to see how the same object appeared in different instruments, I chose M45 and used the following binoculars:
Hawke Endurance ED 8x32
Pentax PCF WPII 10x50
Oberwerk Deluxe 15x70
APM 82mm BT with 18mm eyepieces giving a magnification of X26.
The images below are in order of the binoculars listed above.

[img
M45 8x32mm by pbyrne1965 , on Flickr

[img
M45 10x50mm by pbyrne1965 , on Flickr

 

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1 year 7 months ago #111650 by Paul-Byrne
Replied by Paul-Byrne on topic A Different View
[img
M45 15x70mm by pbyrne1965 , on Flickr

[img
M45 82mm BT by pbyrne1965 , on Flickr

It is interesting to see the relative sizes of M45 in the different instruments, how it only fills the centre 20% in the smaller binoculars and gradually grows to fill the entire field of view.  Of course, with greater magnification comes a greater number of stars visible.
With the leap from 70mm to 82mm and an increase a magnification of 9, there is very little difference between the larger binoculars.  Though that slight increase allows fainter stars to appear.
This was viewed from my urban back garden, it will be interesting to repeat the exercise from a dark site and see how much of a difference it makes.

Paul
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1 year 7 months ago #111652 by flt158
Replied by flt158 on topic A Different View
Thank you, Paul, for each of these images of M 45. 
They are all superb!
The one I reckon is my favourite is with your 82mm BT. 
There are so many stars. 

Clear skies from Aubrey. 
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1 year 6 months ago #111658 by Until_then-Goodnight!
Replied by Until_then-Goodnight! on topic A Different View
Hi Paul,

What brilliant idea! I love these sketches. I'd be hard pressed to pick my favourite none. Bravo! 

Clear skies,

Darren.

 
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