APM 140mm ED, my next intended.
- 25585
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APM 140mm ED, my next intended.
Been in my subconscious tempting me.
https://www.cloudynights.com/articles/c ... 20portable.
https://www.cloudynights.com/articles/c ... 20portable.
Unashamed Linda Ronstadt ♡ fan! :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.
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.
- Lady Fraktor
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Re: APM 140mm ED, my next intended.
APM does make some very nice telescopes.
Gabrielle
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
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, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
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, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
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Re: APM 140mm ED, my next intended.
6" (or 5.5" in this case) refractor is a great telescope to have APO or not. The question is do you want to pay $3,500 for semi-apo 140mm scope when you can get better corrected 127mm APO triplet for $2,400?
https://explorescientificusa.com/collec ... -refractor
https://explorescientificusa.com/collec ... -refractor
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.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
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.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
- pakarinen
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Re: APM 140mm ED, my next intended.
Hmmmm...13mm...13mm...
Seriously though, what about weight constraints? Maybe not an issue for 255.
Seriously though, what about weight constraints? Maybe not an issue for 255.
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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: APM 140mm ED, my next intended.
For visual you really need a triple.
Had the APM 152 f8 edapo double and was really disappointed with it when got the TS Optics 130 f7 53 triple. The 130 was noticeably better on the planets.
Had the APM 152 f8 edapo double and was really disappointed with it when got the TS Optics 130 f7 53 triple. The 130 was noticeably better on the planets.
Arizona- where the sky's are not cloudy all night.
Triple lensed fracs are so yummy when looking at planets.
Triple lensed fracs are so yummy when looking at planets.
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Re: APM 140mm ED, my next intended.
As I suspected, thanks for the first hand feedback.
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.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
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.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
- Jones
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Re: APM 140mm ED, my next intended.
I was thinking of the Istar 140 f6.5 triple with fcd100 glass.
It and the APM 140 are both claiming better than .9 strehl .
The Explore Scientific 127 in a carbon tube weighs only 14 pounds.
Think how much less of a mount can carry that. Maybe theSV M2?
It and the APM 140 are both claiming better than .9 strehl .
The Explore Scientific 127 in a carbon tube weighs only 14 pounds.
Think how much less of a mount can carry that. Maybe the
Arizona- where the sky's are not cloudy all night.
Triple lensed fracs are so yummy when looking at planets.
Triple lensed fracs are so yummy when looking at planets.
- 25585
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Re: APM 140mm ED, my next intended.
I have a fullyBigzmey wrote: ↑Wed Jun 02, 2021 7:22 pm 6" (or 5.5" in this case) refractor is a great telescope to have APO or not. The question is do you want to pay $3,500 for semi-apo 140mm scope when you can get better corrected 127mm APO triplet for $2,400?
https://explorescientificusa.com/collec ... -refractor
Unashamed Linda Ronstadt ♡ fan! :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.
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.
- 25585
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Re: APM 140mm ED, my next intended.
I will be getting a new, larger mount. A 150 F8 is too large & heavy, so an
Unashamed Linda Ronstadt ♡ fan! :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.
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: APM 140mm ED, my next intended.
In this case go for it!25585 wrote: ↑Thu Jun 03, 2021 9:30 amI have a fullyBigzmey wrote: ↑Wed Jun 02, 2021 7:22 pm 6" (or 5.5" in this case) refractor is a great telescope to have APO or not. The question is do you want to pay $3,500 for semi-apo 140mm scope when you can get better corrected 127mm APO triplet for $2,400?
https://explorescientificusa.com/collec ... -refractorapo 120mm, so 10mm more is not enough really. Don't know of any other 140s apart from theES triplet. A TEC 140 costs too much. The APM is a compromise, I guess.
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.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
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.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
- Lady Fraktor
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Re: APM 140mm ED, my next intended.
The APM 140mm is a very solid performer and you will enjoy it considerably I am sure.
Build quality is excellent, the R&P focuser is solid and the views are superb.
Build quality is excellent, the R&P focuser is solid and the views are superb.
Gabrielle
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
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, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
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, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
- Bigzmey
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Re: APM 140mm ED, my next intended.
But what aboutLady Fraktor wrote: ↑Thu Jun 03, 2021 6:43 pm The APM 140mm is a very solid performer and you will enjoy it considerably I am sure.
Build quality is excellent, the R&P focuser is solid and the views are superb.
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.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
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.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
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Re: APM 140mm ED, my next intended.
What
Seriously though, I had no issues with
I cannot recall seeing anything in the view that would stop me from recommending it.
Gabrielle
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
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, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
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, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
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Re: APM 140mm ED, my next intended.
The doubles I've had did not show ca when in focus. They lose to a triple cause they just do not have the sharpness and contrast that a triple does. They cannot go to really hi powers 350 plus like the triple do.
Arizona- where the sky's are not cloudy all night.
Triple lensed fracs are so yummy when looking at planets.
Triple lensed fracs are so yummy when looking at planets.
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Re: APM 140mm ED, my next intended.
Please do not say that loudly, I would hate for my Stellarvue or Vixen to hear that.
They may start to think they are doing something wrong.
The main advantage of a triplet is it lets you image into the UV and IR further than we can see.
With good quality glass, finishing, polishing and coatings the difference of a high end doublet and triplet is fairly small.
Even 10 years ago it was a different circumstance though.
They may start to think they are doing something wrong.
The main advantage of a triplet is it lets you image into the UV and IR further than we can see.
With good quality glass, finishing, polishing and coatings the difference of a high end doublet and triplet is fairly small.
Even 10 years ago it was a different circumstance though.
Gabrielle
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
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, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
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, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
- notFritzArgelander
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Re: APM 140mm ED, my next intended.
Smoothness and accuracy of figure is more important than the number of elements for visual use. Since I can collimate and optimize a doublet on my own bench I have no desire for a triplet. My Stellarvue is confident it can do no wrong.Lady Fraktor wrote: ↑Fri Jun 04, 2021 3:23 am Please do not say that loudly, I would hate for my Stellarvue or Vixen to hear that.
They may start to think they are doing something wrong.
The main advantage of a triplet is it lets you image into the UV and IR further than we can see.
With good quality glass, finishing, polishing and coatings the difference of a high end doublet and triplet is fairly small.
Even 10 years ago it was a different circumstance though.
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
- notFritzArgelander
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Re: APM 140mm ED, my next intended.
notFritzArgelander wrote: ↑Fri Jun 04, 2021 4:00 amSmoothness and accuracy of figure is more important than the number of elements for visual use. Since I can collimate and optimize a doublet on my own bench I have no desire for a triplet. My Stellarvue is confident it can do no wrong.Lady Fraktor wrote: ↑Fri Jun 04, 2021 3:23 am Please do not say that loudly, I would hate for my Stellarvue or Vixen to hear that.
They may start to think they are doing something wrong.
The main advantage of a triplet is it lets you image into the UV and IR further than we can see.
With good quality glass, finishing, polishing and coatings the difference of a high end doublet and triplet is fairly small.
Even 10 years ago it was a different circumstance though.
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
- Lady Fraktor
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Re: APM 140mm ED, my next intended.
I have no issues collimating doublets but triplets are a bit too tricky without the proper equipment, I have no problems leaving them to the expertsnotFritzArgelander wrote: ↑Fri Jun 04, 2021 4:52 am PS My collimation set ups cannot handle a triplet, too many degrees of freedom.
Gabrielle
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
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, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
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, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
- Jones
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Re: APM 140mm ED, my next intended.
Some doublets can equal a triple like Vixen and Takahashi. They are made in Japan, and notice the price tags. Do not know where those old Meade 6" f9 edapo doubles were made, had the same ed glass fk61 as the APM 6" f8 edapo first 2 batches. The APM did not succeed in being as good as the Meade.
The Chinese triples are almost as good as the top of the line stuff from everywhere else. Where their doubles will end up on the performance step ladder remains to be seen.
The Chinese triples are almost as good as the top of the line stuff from everywhere else. Where their doubles will end up on the performance step ladder remains to be seen.
Arizona- where the sky's are not cloudy all night.
Triple lensed fracs are so yummy when looking at planets.
Triple lensed fracs are so yummy when looking at planets.
- Lady Fraktor
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Re: APM 140mm ED, my next intended.
You seem to be comparing mass produced to premium optics which you just cannot do.
Mass produced optics will only have a standard of QC at a set price point, where a premium optic QC level will be much higher.
Occasionally you will find a Meade, Skywatcher, Celestron that is better than the rest of their offerings but it is priced accordingly as well.
Those few telescopes get a higher QC level than the rest.
An example is some of the high end Skywatcher that were designed in Belgium (Lichtenknecker Optics), not in China.
Mass produced optics will only have a standard of QC at a set price point, where a premium optic QC level will be much higher.
Occasionally you will find a Meade, Skywatcher, Celestron that is better than the rest of their offerings but it is priced accordingly as well.
Those few telescopes get a higher QC level than the rest.
An example is some of the high end Skywatcher that were designed in Belgium (Lichtenknecker Optics), not in China.
Gabrielle
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
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, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
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, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
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