woodhornbirder
Well-known member
A while ago i did see a figure for this, but i cant quite recall it.... 330mm?
I recall lookinig through an ed50 with a friends fixed mag lens from his nikon edIII
Think it was 20x mag ep. Probably the widest FOV of any scope i have looked through. Possibly though it was only 16x on the ed50 ?
I came across an astro finder scope from altair astro that is a 60mm scope with a FL of approx300mm. With a meade 5000 uwa(82deg) 16mm that would be 19x and almost 4deg fov.
IN theory....this scope could be fitted with a 100deg/110 deg ep, which means 5-6deg fov.
HOwever achieveing this fov with a magnification beyons 22x seems like breaking through a glass wall.
imo the perfect combo for seawatching*.....27x magnification and 5deg fov.
[some would prefer 40xwide on an 80mm scope. which is the traditional sweet spot for hardcore seawatching]
I would suggest that going for birds over 100m away out to sea, is pretty specialist pursuit.....requiring about 1k worth of gear at minimum; 85/88mm scopes score well for this highend activity. ie zeiss kowa etc.
*My definition of seawatching is birds in flight between 10m and 60m from the shore line.
Achieving that(27x5deg) with an ED scope, doesnt seem doable atmo....opticron gd52 might come closest?
oh well back to the drawing board )
(am discounting using high powered bins, as its cheating, and very expensive!)
I recall lookinig through an ed50 with a friends fixed mag lens from his nikon edIII
Think it was 20x mag ep. Probably the widest FOV of any scope i have looked through. Possibly though it was only 16x on the ed50 ?
I came across an astro finder scope from altair astro that is a 60mm scope with a FL of approx300mm. With a meade 5000 uwa(82deg) 16mm that would be 19x and almost 4deg fov.
IN theory....this scope could be fitted with a 100deg/110 deg ep, which means 5-6deg fov.
HOwever achieveing this fov with a magnification beyons 22x seems like breaking through a glass wall.
imo the perfect combo for seawatching*.....27x magnification and 5deg fov.
[some would prefer 40xwide on an 80mm scope. which is the traditional sweet spot for hardcore seawatching]
I would suggest that going for birds over 100m away out to sea, is pretty specialist pursuit.....requiring about 1k worth of gear at minimum; 85/88mm scopes score well for this highend activity. ie zeiss kowa etc.
*My definition of seawatching is birds in flight between 10m and 60m from the shore line.
Achieving that(27x5deg) with an ED scope, doesnt seem doable atmo....opticron gd52 might come closest?
oh well back to the drawing board )
(am discounting using high powered bins, as its cheating, and very expensive!)
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