The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

Discuss telescope eyepieces.
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Bener
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Re: The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

#21

Post by Bener »


Yes, even ~70+ degrees is wider than my current lenses and would get me wider AFOV.

Any suggestions for something in the 9-10mm and 12-14mm ranges?
Scopes: ES 12” f/5 Truss Dob; GSO 6” f/5 on Stellarvue M002C; AWB OneSky
Eyepieces: Pentax XW; TeleVue Delos; Morpheus; ES 82° & 68°; APM/Astro-Tech XWA 100° & UWA 82°; Meade HD-60
Binos: Zeiss 10X40B Dialyt
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Bigzmey United States of America
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Re: The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

#22

Post by Bigzmey »


Bener wrote: Fri Oct 22, 2021 5:18 pm Yes, even ~70+ degrees is wider than my current lenses and would get me wider AFOV.

Any suggestions for something in the 9-10mm and 12-14mm ranges?
Explore Scientific 82deg 14mm is a good quality EP and should work nicely in your scope.

https://agenaastro.com/explore-scientif ... -14mm.html

If you OK buying used I suggest Meade Series 5000 UWA 82 deg.

These two EPs I have used a lot and can recommend to anyone based on my hands-on experience.
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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Bener
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Re: The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

#23

Post by Bener »


I am just fine with buying used. That’s how I got my HD60 lenses.
I will look into the Meade UWA.

Thank you!
Scopes: ES 12” f/5 Truss Dob; GSO 6” f/5 on Stellarvue M002C; AWB OneSky
Eyepieces: Pentax XW; TeleVue Delos; Morpheus; ES 82° & 68°; APM/Astro-Tech XWA 100° & UWA 82°; Meade HD-60
Binos: Zeiss 10X40B Dialyt
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Re: The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

#24

Post by Bigzmey »


Bener wrote: Fri Oct 22, 2021 7:39 pm I am just fine with buying used. That’s how I got my HD60 lenses.
I will look into the Meade UWA.

Thank you!
Meade UWA will be also my preference over ES82. Optically they are equally good, but with Meade you get more eye relief.
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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Re: The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

#25

Post by 25585 »


What 1x,2x,3x needs to consider is the magnification factor effect on FoV through an eyepiece. A 32mm Plossl may be great as a 1x (say), but by 2x a Plossl is getting hard for manual tracking scopes, & 3x needs tracking.

So alongside 1x, 2x, 3x for magnification, non-tracking relaxed viewing needs an AFOV guide. Any suggestions?
Unashamed Linda Ronstadt ♡ fan! :dance: :Clap:

Eyepieces from: Aero, Antares, APM, Baader, Brandon, Bresser, Celestron, Datysun, Docter, Explore Scientific, GSO, I R Poyser, Meade, Nikon, Orion, Pentax, Rodenstock, Siberia, Sky-Watcher, Taiso, Takahashi, TAL, Tele Vue, TS, Vernonscope, Vixen, Zeiss.

Scopes from: Altair, Bresser, Lumicon, Orion Optics UK, Sky-Watcher, Takahashi, Tele Vue, TS, Vixen.
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Re: The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

#26

Post by Bigzmey »


25585 wrote: Fri Feb 25, 2022 10:04 pm What 1x,2x,3x needs to consider is the magnification factor effect on FoV through an eyepiece. A 32mm Plossl may be great as a 1x (say), but by 2x a Plossl is getting hard for manual tracking scopes, & 3x needs tracking.

So alongside 1x, 2x, 3x for magnification, non-tracking relaxed viewing needs an AFOV guide. Any suggestions?
Since there is always a trade off for wide angel optics, one has to developed their own preferences. I have tried ultra wide EPs but anything above 72 deg just doesn't work for me.
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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Re: The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

#27

Post by 25585 »


With the exception of my ES92s & Baader Morpheus ranges, I normally stay below 65° for FL <20mm. To have a FoV where its all visible, as for binoculars is much more relaxing. My bino viewing eyepieces are ideally 50 to 60°. .
Unashamed Linda Ronstadt ♡ fan! :dance: :Clap:

Eyepieces from: Aero, Antares, APM, Baader, Brandon, Bresser, Celestron, Datysun, Docter, Explore Scientific, GSO, I R Poyser, Meade, Nikon, Orion, Pentax, Rodenstock, Siberia, Sky-Watcher, Taiso, Takahashi, TAL, Tele Vue, TS, Vernonscope, Vixen, Zeiss.

Scopes from: Altair, Bresser, Lumicon, Orion Optics UK, Sky-Watcher, Takahashi, Tele Vue, TS, Vixen.
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Caldwell 14 Great Britain
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Re: The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

#28

Post by Caldwell 14 »


Hi Don

My main set doesn’t quite follow your protocol, but I would value your opinion. In my TV 102 (which as I am sure you know) is 8.6. I use a 32 mm TV plossl at x27, a 13mm Delite at x67 and a 8mm Radian giving me x110. If I have the seeing I go to x176 with a 5 mm Delite.
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Re: The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

#29

Post by Caldwell 14 »


Oh, and I have bortle 4 skies
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Re: The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

#30

Post by Don Pensack »


I like the magnifications a bit closer together with my 102mm as the magnifications pass 100x. I like 120x/150x/180x/210x as a goal so I can fight the seeing conditions where the 102mm is used.
My night skies here are so bright, the background in the eyepiece is almost white until I reach 100x and more, so the higher magnifications get used a lot.

So the 1X/2X/3X idea is merely a way for an inexperienced telescope owner to at least have on hand 3 eyepieces which will be usable and yet yield different magnifications for objects of different sizes.
Personally, I go all the way to 8X with eyepieces, but I also carry around a heavy case with 13 eyepieces.

Eventually, as the observer gains experience, more eyepieces will be acquired.
Astronomer since 1963
Currently using a 12.5" dob and a 4" apo refractor
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