Williams Optics SWAN 33 for 80ED?

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Ylem United States of America
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Williams Optics SWAN 33 for 80ED?

#1

Post by Ylem »


Thoughts on this EP for use in my 80ED f7.5?
https://www.highpointscientific.com/wil ... ce-e-swa33

Would it give me messy stars at the edge?
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Orion 80ED
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Lady Fraktor Slovakia
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Re: Williams Optics SWAN 33 for 80ED?

#2

Post by Lady Fraktor »


With such a low power I would expect a small amount but offset by the 4° TFOV it would give.
A 4.4mm exit pupil so should be a nice sweeper.
See Far Sticks: Antares Elita 103/1575, AOM FLT 105/1000, Bresser BV 127/1200, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS100/1000, Vixen SD115s/885
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Re: Williams Optics SWAN 33 for 80ED?

#3

Post by Bigzmey »


You will find it very comfortable EP to use in your frac. True, the edge of the field will be a bit soft, but it applies to most of wide fields.

I would go with Orion Q70 32mm instead. Very similar performance at better price.

https://www.telescope.com/Orion/Orion-Q ... 0/e/66.uts
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.

Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2382, Comets: 34, Asteroids: 255
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