I Have A Math Question
-
- Articles: 0
- Posts: 1493
- Joined: Sun May 12, 2019 1:05 am
- 5
- Status:
Offline
-
TSS Awards Badges
I Have A Math Question
- Ruud
- Articles: 0
- Posts: 813
- Joined: Sun Feb 09, 2020 9:56 pm
- 4
- Location: the Netherlands
- Status:
Offline
Re: I Have A Math Question
If the magnification is 7x, the apparent field of view is 7 x 7.5° = 52.5° (like a Plössl eyepiece)
If the magnification is 8x, the apparent field of view is 8 x 7.5° = 60° (like a wide field eyepiece)
If the magnification is 10x, the apparent field of view is 10 x 7.5° = 75° (almost as wide as a Nagler eyepiece)
HTH
- KathyNS
- Co-Administrator
- Articles: 0
- Posts: 2637
- Joined: Thu Apr 25, 2019 11:47 am
- 5
- Location: Nova Scotia
- Status:
Offline
-
TSS Photo of the Day
TSS Awards Badges
Re: I Have A Math Question
If we are talking avout 7x binos, the
DSO AP: Orion 200mm f/4 Newtonian Astrograph; ATIK 383L+; EFW2 filter wheel; Astrodon Ha,Oiii,LRGB filters; KWIQ/QHY5 guide scope; Planetary AP: Celestron C-11; ZWO ASI120MC; Portable: Celestron C-8 on HEQ5 pro; C-90 on wedge; 20x80 binos; Etc: Canon 350D; Various EPs, etc. Obs: 8' Exploradome; iOptron CEM60 (pier); Helena Observatory (H2O) Astrobin
-
- Articles: 0
- Posts: 1493
- Joined: Sun May 12, 2019 1:05 am
- 5
- Status:
Offline
-
TSS Awards Badges
Re: I Have A Math Question
Got it and thanksRuud wrote: ↑Wed Nov 18, 2020 8:37 pm The Angle of View in the screenshot is the true field. It is 7.5°.
If the magnification is 7x, the apparent field of view is 7 x 7.5° = 52.5° (like a Plössl eyepiece)
If the magnification is 8x, the apparent field of view is 8 x 7.5° = 60° (like a wide field eyepiece)
If the magnification is 10x, the apparent field of view is 10 x 7.5° = 75° (almost as wide as a Nagler eyepiece)
HTH
Create an account or sign in to join the discussion
You need to be a member in order to post a reply
Create an account
Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute