Achromatic and apochromatic doublets

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Lady Fraktor Slovakia
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Re: Achromatic and apochromatic doublets

#21

Post by Lady Fraktor »


The specifications do look good though no reviews as of yet.
FCD-100/ Lanthanum make a good combination and with a 0.95 Strehl the lens will be getting better than average figuring and polish.
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
EQ: TAL MT-1, Vixen SXP, AXJ, AXD
Az/Alt: AYO Digi II/ Argo Navis, Stellarvue M2C/ Argo Navis
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Takahashi prism, TAL, Vixen flip mirror
Eyepieces: Antares to Zeiss
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Re: Achromatic and apochromatic doublets

#22

Post by Bigzmey »


pakarinen wrote: Fri Jun 04, 2021 6:59 pm
notFritzArgelander wrote: Fri Jun 04, 2021 4:48 pm
pakarinen wrote: Fri Jun 04, 2021 1:38 pm Is lanthanum really worth the extra cost or is it just marketing? I'd Google, but I'm lazy. ;)
:text-thankyoublue:
Let me back off my "totally worth it" to the extent of adding a "within reason". What are you thinking of getting?
80mm F7 EDL. I'd sell my ST80 and ST120 to help finance it. Or not. :whistle:
For planets, Moon and doubles I would trade ST80 + ST120 for 80mm F7 ED any time. If DSO are in the picture, then it is tricky. 80ED will definitely underperform on fainter stuff. However, if you can step up to 102mm ED then it will be better all around than ST80+ST120 combo.
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: Achromatic and apochromatic doublets

#23

Post by notFritzArgelander »


Bigzmey wrote: Fri Jun 04, 2021 8:26 pm
pakarinen wrote: Fri Jun 04, 2021 6:59 pm
notFritzArgelander wrote: Fri Jun 04, 2021 4:48 pm

Let me back off my "totally worth it" to the extent of adding a "within reason". What are you thinking of getting?
80mm F7 EDL. I'd sell my ST80 and ST120 to help finance it. Or not. :whistle:
For planets, Moon and doubles I would trade ST80 + ST120 for 80mm F7 ED any time. If DSO are in the picture, then it is tricky. 80ED will definitely underperform on fainter stuff. However, if you can step up to 102mm ED then it will be better all around than ST80+ST120 combo.


Aperture fever....
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, 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 IV, Vixen Porta II, Celestron CG5
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Re: Achromatic and apochromatic doublets

#24

Post by Lady Fraktor »


Well that was fun nFA! :D

I would say keep the ST80 as a quick G&G, the AT80 as a more serious G&G and the ST120 for DSO nights.
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
EQ: TAL MT-1, Vixen SXP, AXJ, AXD
Az/Alt: AYO Digi II/ Argo Navis, Stellarvue M2C/ Argo Navis
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Takahashi prism, TAL, Vixen flip mirror
Eyepieces: Antares to Zeiss
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Re: Achromatic and apochromatic doublets

#25

Post by notFritzArgelander »


Lady Fraktor wrote: Fri Jun 04, 2021 8:38 pm Well that was fun nFA! :D

I would say keep the ST80 as a quick G&G, the AT80 as a more serious G&G and the ST120 for DSO nights.
I like that idea. I kept my ST80 after I got the SV ED80 as they are quite different scopes.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, 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 IV, Vixen Porta II, Celestron CG5
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Re: Achromatic and apochromatic doublets

#26

Post by notFritzArgelander »


notFritzArgelander wrote: Fri Jun 04, 2021 8:28 pm
Bigzmey wrote: Fri Jun 04, 2021 8:26 pm
pakarinen wrote: Fri Jun 04, 2021 6:59 pm

80mm F7 EDL. I'd sell my ST80 and ST120 to help finance it. Or not. :whistle:
For planets, Moon and doubles I would trade ST80 + ST120 for 80mm F7 ED any time. If DSO are in the picture, then it is tricky. 80ED will definitely underperform on fainter stuff. However, if you can step up to 102mm ED then it will be better all around than ST80+ST120 combo.


Aperture fever....
More seriously and less fun... The 80EDs can do brighter DSOs quite well. M31 and brighter nebulae are rendered very well. Some of the most enjoyable sweeping around M42 and environs was done with the SV80 ED Access and an H beta filter. Really remarkable detail. For picking out fine details like individual clusters and nebulae in M33..... 300mm is barely enough aperture.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, 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 IV, Vixen Porta II, Celestron CG5
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Re: Achromatic and apochromatic doublets

#27

Post by Refractordude »


Thanks for all the replies.
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Re: Achromatic and apochromatic doublets

#28

Post by Bowlerhat »


Greenman wrote: Fri Jun 04, 2021 6:09 pm As far as I can see it is a mixed bag, Explore triplets have a good reputation, but they don’t use FPL53 (rather going for Hoya FCD001 ED).
They used two type of FCD glasses-hence there's the essential vs normal triplet and they're reflected in the price.
Cats: Lomo mini mak, Acuter Maksy 60, Celestron C5 XLT
Refractors: Tak FC60NZ, Vixen custom 60/910, Vixen FL102s, Vixen Ozuma, Zeiss Telementor II, , Goto Kogaku 65mm, Nippon Kogaku 65mm, etc
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Re: Achromatic and apochromatic doublets

#29

Post by notFritzArgelander »


Bowlerhat wrote: Sat Jun 05, 2021 2:33 am
Greenman wrote: Fri Jun 04, 2021 6:09 pm As far as I can see it is a mixed bag, Explore triplets have a good reputation, but they don’t use FPL53 (rather going for Hoya FCD001 ED).
They used two type of FCD glasses-hence there's the essential vs normal triplet and they're reflected in the price.
Religious wars have been fought over FPL53 vs FCD. I'm a noncombatant. Give peace a chance.



Another bit of whimsy today....
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, 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 IV, Vixen Porta II, Celestron CG5
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Re: Achromatic and apochromatic doublets

#30

Post by Bigzmey »


notFritzArgelander wrote: Sat Jun 05, 2021 3:14 am
Bowlerhat wrote: Sat Jun 05, 2021 2:33 am
Greenman wrote: Fri Jun 04, 2021 6:09 pm As far as I can see it is a mixed bag, Explore triplets have a good reputation, but they don’t use FPL53 (rather going for Hoya FCD001 ED).
They used two type of FCD glasses-hence there's the essential vs normal triplet and they're reflected in the price.
Religious wars have been fought over FPL53 vs FCD. I'm a noncombatant. Give peace a chance.



Another bit of whimsy today....
It's not the type of glass, it's how you use it. :D
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: Achromatic and apochromatic doublets

#31

Post by notFritzArgelander »


Bigzmey wrote: Sat Jun 05, 2021 5:58 pm
notFritzArgelander wrote: Sat Jun 05, 2021 3:14 am
Bowlerhat wrote: Sat Jun 05, 2021 2:33 am

They used two type of FCD glasses-hence there's the essential vs normal triplet and they're reflected in the price.
Religious wars have been fought over FPL53 vs FCD. I'm a noncombatant. Give peace a chance.



Another bit of whimsy today....
It's not the type of glass, it's how you use it. :D
Exactement.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, 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 IV, Vixen Porta II, Celestron CG5
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Re: Achromatic and apochromatic doublets

#32

Post by Greenman »


This one is sitting in my wish list:

https://www.altairastro.com/starwave-80 ... -465-p.asp
Cheers,

Tony.

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Smart Scope: Dwarf II - Club and outreach work.

AP Refractor: Altair 72EDF Deluxe F6;1x & 0.8 Flatteners; Antares Versascope 60mm finder. ASIAir Pro.Li battery pack for grab & go.

Celestron AVX Mount; X-cel LX eyepieces & Barlows 2x 3x, ZWO 2” Filter holder,

Cameras: main DSO ASI533MC; DSO guide ASI120MM; Planetary ASI224MC; DSLR Canon EOS100 stock.

Filters: Astronomik IR cut; Optolong L-Pro; Optolong L-Enhance.

Binoculars: Celestron 15 x 70.

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Re: Achromatic and apochromatic doublets

#33

Post by pakarinen »


Greenman wrote: Sun Jun 06, 2021 8:02 am This one is sitting in my wish list:

https://www.altairastro.com/starwave-80 ... -465-p.asp
That's a pretty one.

I do wonder if I should simplify / declutter and just have one better quality scope. But maybe I should consider a heavier load-rated mount first.
And then there's the matter of maybe acquiring a ZWO for a little EAA. And a tracking mount. ;) Too many ways to spend my dinero...
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I drink tea, I read books, I look at stars when I'm not cursing clouds. It's what I do.
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AT50, AT72EDII, ST80, ST102; Scopetech Zero, AZ-GTi, AZ Pronto; Innorel RT90C, Oberwerk 5000; Orion Giantview 15x70s, Vortex 8x42s, Navy surplus 7x50s, Nikon 10x50s
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Re: Achromatic and apochromatic doublets

#34

Post by dagadget »


notFritzArgelander wrote: Fri Jun 04, 2021 2:40 pm
pakarinen wrote: Fri Jun 04, 2021 1:38 pm Is lanthanum really worth the extra cost or is it just marketing? I'd Google, but I'm lazy. ;)
:text-thankyoublue:
Totally worth it.
I will second that totally worth it as I have an AT 72EDII with FPL-53 and lanthanum and boy is that a nice scope.
DSC01606.JPG
Astro-Tech AT 152EDT Ioptron GEM 45 Mount AKA FracZilla
Celestron C11 Carbon Fiber CGEM II Mount AKA Cloudzilla
Sky Watcher Mak Cas 180 Ioptron IEQ 30 AKA MoonZilla
AT 92 on IEQ 30 Pro AKA ClusterZilla
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