Goodbye Spherical Abberation?

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Kanadalainen
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Goodbye Spherical Abberation?

Post by Kanadalainen » Tue Sep 10, 2019 11:48 pm

Can a spherical lens be designed to be free of spherical aberration?

"Mothers! It is there!" - Rafael Gonzales-Acuna, 2018

https://petapixel.com/2019/07/05/goodby ... l-problem/

(Mods please delete if this has been posted already).
Scopes - C80 frac with 2" focuser, modified XT10i f4.7, 14.5" DIY strut dob f4.5
DSLR stuff - Nikon D90, Canon 60D; Rokinon 10mm 2.8, Rokinon 135mm f2, Sigma 70-300mm f4
Mount: IOptron skyguider pro
Eyepieces - Leitz Periplan GF, ES68s, ES82s, Naglers, Plossls, Nikon CFI, Olympus FK
Abbe Orthos: Zeiss Jena K7x (35mm), K10x (25mm), Vixen 18mm
Miscellaneous - Building a fixed-post mirror grinder/polisher viewtopic.php?f=20&t=2426
Visual goodies - M110: 110, but going around the horn again.. :D Herschel 400: 130 Comets: 2 Planets: 6

"Mothers! It is there!" - Rafael Gonzales-Acuna, 2018.
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notFritzArgelander
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Re: Goodbye Spherical Abberation?

Post by notFritzArgelander » Wed Sep 11, 2019 12:21 am

Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 A f7; Newtonians: Z12 f5; Catadioptrics: VMC110L, Intes MK66. 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
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Re: Goodbye Spherical Abberation?

Post by notFritzArgelander » Wed Sep 11, 2019 3:50 am

Fingerslip.....

The 2nd link was supposed to be viewtopic.php?f=28&t=1666&p=14540&hilit=equation#p14515

BTW I recommend NOT deleting the OP and replies since the articles linked are significantly different. Thanks Ian, for the add.
Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 A f7; Newtonians: Z12 f5; Catadioptrics: VMC110L, Intes MK66. 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
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Kanadalainen
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Re: Goodbye Spherical Abberation?

Post by Kanadalainen » Wed Sep 11, 2019 4:10 am


:D :lol: I suspected. And, an amusing article on top of it all. One of the people in our workplace told me about this today.
Scopes - C80 frac with 2" focuser, modified XT10i f4.7, 14.5" DIY strut dob f4.5
DSLR stuff - Nikon D90, Canon 60D; Rokinon 10mm 2.8, Rokinon 135mm f2, Sigma 70-300mm f4
Mount: IOptron skyguider pro
Eyepieces - Leitz Periplan GF, ES68s, ES82s, Naglers, Plossls, Nikon CFI, Olympus FK
Abbe Orthos: Zeiss Jena K7x (35mm), K10x (25mm), Vixen 18mm
Miscellaneous - Building a fixed-post mirror grinder/polisher viewtopic.php?f=20&t=2426
Visual goodies - M110: 110, but going around the horn again.. :D Herschel 400: 130 Comets: 2 Planets: 6

"Mothers! It is there!" - Rafael Gonzales-Acuna, 2018.
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Lady Fraktor
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Re: Goodbye Spherical Abberation?

Post by Lady Fraktor » Wed Sep 11, 2019 5:16 am

That was my thought when I read the title :lol:

Thank you for the article Ian.
Proper Telescopes: Antares 105 f/15, Celestron 150 f/8, Stellarvue NHNGDX 80 f/6.9, TAL 100RS f/10, TS 102 f/11, UR 70 f/10, Vixen ED115s f/7.7
Mounts: Celestron CG-5 w/ Argo Navis & tracking motor, SLT w/ pier & tripod mods, Manfrotto 028b w/ SV M2C, Mantrotto 055Pro w/ 128RC, TAL MT1C, Vixen SXP w/ HAL-130 & half pier
Diagonal: 2" A-P Maxbright, 2" Baader Herschel Wedge (P), 2" Zeiss/ Baader Amici Prism (DX2), 2" Orion Amici Prism, 2" Stellarvue DX, 2" TeleVue EverBrite
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