I mention this because I recently bought a 14mm/82 degree Meade and was thinking of selling the 12mm StarGuider, only to learn the Meades are not parfocal. They are from a different era and OEM manufacturer, but I somehow hoped they would match.
Parfocal surprises
- The Happy Parrot
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Parfocal surprises
No idea how common this is, but I was pleasantly surprised to discover my budget 12mm Agena StarGuider eyepiece is parfocal with my fancy 5mm Meade MWA 100 degree ep . Are there other such happy coincidences?
I mention this because I recently bought a 14mm/82 degree Meade and was thinking of selling the 12mm StarGuider, only to learn the Meades are not parfocal. They are from a different era and OEM manufacturer, but I somehow hoped they would match.
I mention this because I recently bought a 14mm/82 degree Meade and was thinking of selling the 12mm StarGuider, only to learn the Meades are not parfocal. They are from a different era and OEM manufacturer, but I somehow hoped they would match.
- Graeme1858
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Re: Parfocal surprises
The Happy Parrot wrote: ↑Sun Jun 06, 2021 1:22 am No idea how common this is, but I was pleasantly surprised to discover my budget 12mm Agena StarGuider eyepiece is parfocal with my fancy 5mm Meade MWA 100 degree ep. Are there other such happy coincidences?
Nothing better than a pleasant surprise!
______________________________________________
Celestron 9.25 f10 SCT, f6.3FR, CGX mount.
ASI1600MM Pro, ASI294MC Pro, ASI224MC
ZWO EFW, ZWO OAG, ASI220MM Mini.
APM 11x70 ED APO Binoculars.
https://www.averywayobservatory.co.uk/
Celestron 9.25 f10 SCT, f6.3FR, CGX mount.
ASI1600MM Pro, ASI294MC Pro, ASI224MC
ZWO EFW, ZWO OAG, ASI220MM Mini.
APM 11x70 ED APO Binoculars.
https://www.averywayobservatory.co.uk/
- Bigzmey
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Re: Parfocal surprises
It has happened to me to. Some of my Orthos and Plossls are parfocal to wide fields.
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
- Ruud
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Re: Parfocal surprises
I never had such luck!
7x50 Helios Apollo ✶ 8x42 Bresser Everest ✶ 73mm f/5.9 WO APO ✶ 4" f/5 TeleVue Genesis ✶ 6" f/10 Celestron 6SE ✶ 0.63x reducer ✶ 1.8, 2, 2.5 and 3x Barlows ✶ eyepieces from 4.5 to 34mm
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