Taking advantage of edge of field of view aberration cancelling out my eyes aberration from binoculars sharper vision?

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realflow100
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Taking advantage of edge of field of view aberration cancelling out my eyes aberration from binoculars sharper vision?

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Post by realflow100 »

my binoculars cometron 7x50mm have slight aberration at the edges of the field of view and my eyes also have some form of astigmatism (vertically i think)
if I aim my binoculars up and look near the bottom edge of the field of view instead of in the center. I can actually see pin-point sharp stars that way. whereas in the dead center they look like tiny very short shakey vertical lines

so the aberrations of my eyes and the binoculars cancel each other out when using them that way.
taking advantage of this fact I was able to see jupiters moons at only 7x magnification reasonably well! whereas before they were completely invisible entirely just looking normally in the middle of the field of view

I can see stars about a magnitude fainter than I normally can if I use it this way.
is this a reasonable way to get around my eyes astigmatism without using glasses or contacts?

I can see "reasonably" clear enough in normal day to day tasks. up close and far away. im not near sighted or farsighted. can read text up close thats like a millimeter or two tall and things far away look about the same clarity as up close

I see a similar issue with stars in my telescopes middle cause of my eyes. but the aberrations dont cancel out like they do with my binoculars so looking at the bottom edge of the view doesnt make stars sharper.

I thought this was interesting!
orion skyscanner 100mm F4 reflector telescope. Canon EOS 500D/rebel-T1i. Also kit lens 18-55mm IS II. ioptron Smartstar E8500R alt-az goto mount and tripod. no EQ mode limited controller options
canon 55-250mm IS II lens.
2x doublet shorty barlow 2 lens elements in 1 group
5x barlow simple 2 lens elements in 2 groups not doublet but image is decently clear
0.5x reducer not really used much.
svbony ultra wide 66 degree eyepiece kit
20mm 15mm 9mm and 6mm
svbony UHC 1.25 filter (Makes stars fainter. but nebula like orion seems to stay about the same brightness. its hard to tell if it improves the view or not. the background sky is dramatically darker but thats about it)
and 1% to 40% variable polaraizer filter ICE broadband lipo filter just seems to make things slightly "cooler" tinted so not sure what its doing. does not have a light wavelength chart.
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notFritzArgelander
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Re: Taking advantage of edge of field of view aberration cancelling out my eyes aberration from binoculars sharper visio

#2

Post by notFritzArgelander »

It is interesting! Too often we make discussions "all about the gear" and neglect the profound differences individual physiology have on how things work, or not. I think a lot of the religious wars over equipment are because folks don't appreciate that the eye is part of the system as well!
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion Sirius EQG
realflow100
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Re: Taking advantage of edge of field of view aberration cancelling out my eyes aberration from binoculars sharper visio

#3

Post by realflow100 »

wow thats fascinating.
my binoculars also work great in the day or night.
I found if I put a convex lens in front of them (camera lens up close filter adapter) I can focus super close with them almost like a microscope lol
orion skyscanner 100mm F4 reflector telescope. Canon EOS 500D/rebel-T1i. Also kit lens 18-55mm IS II. ioptron Smartstar E8500R alt-az goto mount and tripod. no EQ mode limited controller options
canon 55-250mm IS II lens.
2x doublet shorty barlow 2 lens elements in 1 group
5x barlow simple 2 lens elements in 2 groups not doublet but image is decently clear
0.5x reducer not really used much.
svbony ultra wide 66 degree eyepiece kit
20mm 15mm 9mm and 6mm
svbony UHC 1.25 filter (Makes stars fainter. but nebula like orion seems to stay about the same brightness. its hard to tell if it improves the view or not. the background sky is dramatically darker but thats about it)
and 1% to 40% variable polaraizer filter ICE broadband lipo filter just seems to make things slightly "cooler" tinted so not sure what its doing. does not have a light wavelength chart.
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