Should A Refractor Be Called A Reflector?
- Refractordude
- Interdicted
- Articles: 0
- Posts: 1493
- Joined: Sun May 12, 2019 1:05 am
- 4
- Status:
Offline
-
TSS Awards Badges
Should A Refractor Be Called A Reflector?
With the use of a diagonal, I think so. The diagonal REFLECTS light into the eyepiece.
- Attachments
-
- reflector question 2.PNG (103.62 KiB) Viewed 5544 times
-
- reflector question.PNG (6.04 KiB) Viewed 5544 times
- JayTee
- Universal Ambassador
- Articles: 2
- Posts: 5646
- Joined: Thu Apr 25, 2019 3:23 am
- 5
- Location: Idaho, USA
- Status:
Offline
-
TSS Awards Badges
TSS Photo of the Day
Re: Should A Refractor Be Called A Reflector?
NOPE!
JT
JT
∞ Primary Scopes: #1: Celestron CPC1100 #2: 8" f/7.5 Dob #3: CR150HD f/8 6" frac
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
∞ Guide Scopes: 70 & 80mm fracs -- The El Cheapo Bros.
∞ Mounts: iOptron CEM70AG, SW EQ6R, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: #1: ZWO ASI294MC Pro #2: 662MC #3: 120MC, Canon T3i, Orion SSAG, WYZE Cam3
∞ Binos: 10X50,11X70,15X70, 25X100 ∞ AP Gear: ZWO EAF and mini EFW and the Optolong L-eXteme filter
∞ EPs: ES 2": 21mm 100° & 30mm 82° Pentax XW: 7, 10, 14, & 20mm 70°
Searching the skies since 1966. "I never met a scope I didn't want to keep."
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
∞ Guide Scopes: 70 & 80mm fracs -- The El Cheapo Bros.
∞ Mounts: iOptron CEM70AG, SW EQ6R, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: #1: ZWO ASI294MC Pro #2: 662MC #3: 120MC, Canon T3i, Orion SSAG, WYZE Cam3
∞ Binos: 10X50,11X70,15X70, 25X100 ∞ AP Gear: ZWO EAF and mini EFW and the Optolong L-eXteme filter
∞ EPs: ES 2": 21mm 100° & 30mm 82° Pentax XW: 7, 10, 14, & 20mm 70°
Searching the skies since 1966. "I never met a scope I didn't want to keep."
- Voyageur
- Orion Spur Ambassador
- Articles: 0
- Posts: 682
- Joined: Mon May 06, 2019 1:50 pm
- 4
- Location: Leelanau County, Michigan, USA
- Status:
Offline
Re: Should A Refractor Be Called A Reflector?
Granted, when you use a mirror diagonal with a refractor, the image created by the refraction of light is reflected to the eyepiece, just as your diagrams show. Using similar "logic" you could also say that a reflector is a refractor because the image created by reflection is refracted by the eyepiece.
But why would you want to do either of those things? The terms refractor and reflector make a practical and useful distinction between the two types of scopes on the basis of their optical properties and construction. So I'd say let's leave our terminology as it is!
But why would you want to do either of those things? The terms refractor and reflector make a practical and useful distinction between the two types of scopes on the basis of their optical properties and construction. So I'd say let's leave our terminology as it is!
Last edited by Voyageur on Mon Nov 11, 2019 9:16 pm, edited 1 time in total.
Scopes: Vixen VMC200L, D=200mm, F=1950, f/9.75; Televue 2" Everbright diagonal. Coronado PST; AstroTech EDT 80mm, F=480, f/6.
Mounts: Vixen SXW/Starbook (original); Stellarvue M2C alt-az.
Eyepieces: Televue: 55mm Plossl, 22mm Panoptic, 17.3mm Delos, 13mm Nagler, c. 1980, 11mm Plossl, 7mm Nagler, 5mm Radian; Meade 15mm Super Plossl; VERNONSCOPE 2.4X BARLOW
Binoculars: Leica 8x32 Trinovids, circa 1997; Orion Megaview 20x80, Orion Paragon Plus mount.
Mounts: Vixen SXW/Starbook (original); Stellarvue M2C alt-az.
Eyepieces: Televue: 55mm Plossl, 22mm Panoptic, 17.3mm Delos, 13mm Nagler, c. 1980, 11mm Plossl, 7mm Nagler, 5mm Radian; Meade 15mm Super Plossl; VERNONSCOPE 2.4X BARLOW
Binoculars: Leica 8x32 Trinovids, circa 1997; Orion Megaview 20x80, Orion Paragon Plus mount.
- AntennaGuy
- Milky Way Ambassador
- Articles: 0
- Posts: 1422
- Joined: Sun May 19, 2019 1:20 am
- 4
- Location: Tyler, TX USA
- Status:
Offline
-
TSS Awards Badges
Re: Should A Refractor Be Called A Reflector?
I agree with JT. Although the optical quality of a diagonal is important, its primary role is simply to re-direct the beam. The image forming mechanisms are either lenses or mirrors. Since eyepieces are normally made from lenses, that leaves the main objective (lens = refractor, or mirror = reflector) as the determinant of whether a telescope is a reflector or refractor (otherwise we'd have to call nearly all telescopes refractors). There are some potentially confusing mixtures (e.g., Schmidt-Cassegrain, Maksutov, etc.). But those are normally still considered to be reflectors, while their aperture -sized lens-type elements are considered to be "correctors."
* Meade 323 refractor on a manual equatorial mount.
* Celestron C6 SCT on a Twilight 1 Alt-Az mount
Prof. Barnhardt to Klaatu in The Day the Earth Stood Still: "There are several thousand questions I'd like to ask you.”
* Celestron C6 SCT on a Twilight 1 Alt-Az mount
Prof. Barnhardt to Klaatu in The Day the Earth Stood Still: "There are several thousand questions I'd like to ask you.”
- pakarinen
- Inter-Galactic Ambassador
- Articles: 0
- Posts: 4033
- Joined: Fri Jun 14, 2019 3:33 pm
- 4
- Location: NE Illinois
- Status:
Offline
-
TSS Awards Badges
Re: Should A Refractor Be Called A Reflector?
Should rotini be called linguini? I think not, but I could be persuaded to call it "Bob".
=============================================================================
I drink tea, I read books, I look at stars when I'm not cursing clouds. It's what I do.
=============================================================================
AT50, AT72EDII, ST80, ST102; Scopetech Zero, AZ-GTi, AZ Pronto; Innorel RT90C, Oberwerk 5000; Orion Giantview 15x70s, Vortex 8x42s, Navy surplus 7x50s, Nikon 10x50s
I drink tea, I read books, I look at stars when I'm not cursing clouds. It's what I do.
=============================================================================
AT50, AT72EDII, ST80, ST102; Scopetech Zero, AZ-GTi, AZ Pronto; Innorel RT90C, Oberwerk 5000; Orion Giantview 15x70s, Vortex 8x42s, Navy surplus 7x50s, Nikon 10x50s
- JayTee
- Universal Ambassador
- Articles: 2
- Posts: 5646
- Joined: Thu Apr 25, 2019 3:23 am
- 5
- Location: Idaho, USA
- Status:
Offline
-
TSS Awards Badges
TSS Photo of the Day
Re: Should A Refractor Be Called A Reflector?
I'm sorry, I can't resist, should a golf club really be called a hammer. They are both tools and they both hit things.
JT
JT
∞ Primary Scopes: #1: Celestron CPC1100 #2: 8" f/7.5 Dob #3: CR150HD f/8 6" frac
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
∞ Guide Scopes: 70 & 80mm fracs -- The El Cheapo Bros.
∞ Mounts: iOptron CEM70AG, SW EQ6R, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: #1: ZWO ASI294MC Pro #2: 662MC #3: 120MC, Canon T3i, Orion SSAG, WYZE Cam3
∞ Binos: 10X50,11X70,15X70, 25X100 ∞ AP Gear: ZWO EAF and mini EFW and the Optolong L-eXteme filter
∞ EPs: ES 2": 21mm 100° & 30mm 82° Pentax XW: 7, 10, 14, & 20mm 70°
Searching the skies since 1966. "I never met a scope I didn't want to keep."
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
∞ Guide Scopes: 70 & 80mm fracs -- The El Cheapo Bros.
∞ Mounts: iOptron CEM70AG, SW EQ6R, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: #1: ZWO ASI294MC Pro #2: 662MC #3: 120MC, Canon T3i, Orion SSAG, WYZE Cam3
∞ Binos: 10X50,11X70,15X70, 25X100 ∞ AP Gear: ZWO EAF and mini EFW and the Optolong L-eXteme filter
∞ EPs: ES 2": 21mm 100° & 30mm 82° Pentax XW: 7, 10, 14, & 20mm 70°
Searching the skies since 1966. "I never met a scope I didn't want to keep."
- notFritzArgelander
- In Memory
- Articles: 0
- Posts: 14925
- Joined: Fri May 10, 2019 4:13 pm
- 4
- Location: Idaho US
- Status:
Offline
-
TSS Awards Badges
Re: Should A Refractor Be Called A Reflector?
Refractors are dioptrics.AntennaGuy wrote: ↑Mon Nov 11, 2019 9:04 pm I agree with JT. Although the optical quality of a diagonal is important, its primary role is simply to re-direct the beam. The image forming mechanisms are either lenses or mirrors. Since eyepieces are normally made from lenses, that leaves the main objective (lens = refractor, or mirror = reflector) as the determinant of whether a telescope is a reflector or refractor (otherwise we'd have to call nearly all telescopes refractors). There are some potentially confusing mixtures (e.g., Schmidt-Cassegrain, Maksutov, etc.). But those are normally still considered to be reflectors, while their aperture-sized lens-type elements are considered to be "correctors."
Newtonians, classical Cassegrains and all mirror systems are catoptrics.
Maksutovs, SCTs that mix lenses and mirrors are catadioptrics.
The use of a diagonal is a nonessential option.
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
- Refractordude
- Interdicted
- Articles: 0
- Posts: 1493
- Joined: Sun May 12, 2019 1:05 am
- 4
- Status:
Offline
-
TSS Awards Badges
Re: Should A Refractor Be Called A Reflector?
I am wrong and great answer nFAnotFritzArgelander wrote: ↑Mon Nov 11, 2019 9:41 pmRefractors are dioptrics.AntennaGuy wrote: ↑Mon Nov 11, 2019 9:04 pm I agree with JT. Although the optical quality of a diagonal is important, its primary role is simply to re-direct the beam. The image forming mechanisms are either lenses or mirrors. Since eyepieces are normally made from lenses, that leaves the main objective (lens = refractor, or mirror = reflector) as the determinant of whether a telescope is a reflector or refractor (otherwise we'd have to call nearly all telescopes refractors). There are some potentially confusing mixtures (e.g., Schmidt-Cassegrain, Maksutov, etc.). But those are normally still considered to be reflectors, while their aperture-sized lens-type elements are considered to be "correctors."
Newtonians, classical Cassegrains and all mirror systems are catoptrics.
Maksutovs, SCTs that mix lenses and mirrors are catadioptrics.
The use of a diagonal is a nonessential option.
- Don Quixote
- Articles: 0
- Bigzmey
- Moderator
- Articles: 8
- Posts: 7672
- Joined: Sat May 11, 2019 7:55 pm
- 4
- Location: San Diego, CA USA
- Status:
Online
-
TSS Awards Badges
Re: Should A Refractor Be Called A Reflector?
When I saw the title, I thought it should be called reflector, because it helps us to reflect on wonders of the sky.
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
- j.gardavsky
- Orion Spur Ambassador
- Articles: 0
- Posts: 711
- Joined: Mon Sep 23, 2019 1:52 pm
- 4
- Location: Germany
- Status:
Offline
-
TSS Awards Badges
Re: Should A Refractor Be Called A Reflector?
Yours according to the pic is diagonal double-dioptrix,
because both the light gathering optics and the eyepiece are dioptrics, and there is a zenith diagonal in between.
The other one, listed by not_Fritz, would be catadioptric-diagonal-dioptrix, ...
Regarding the old German Schiefspiegler, I have nothing better than calling it Schiefspieglerteutonics.
The Fraunhofer trackingEQ mount might be Equatoreanum penduli moveatur Fraunhoferi, ...
ZEISS has decided to call their refracting spotting scope, Diascope.
Following ZEISS, Thomas Baader has renamed the astroplanar remake into Eudiascopic
It's Tuesday noon here, time for a cup of coffee and a cake, but not Leibnitzkeks, I tell you
JG
because both the light gathering optics and the eyepiece are dioptrics, and there is a zenith diagonal in between.
The other one, listed by not_Fritz, would be catadioptric-diagonal-dioptrix, ...
Regarding the old German Schiefspiegler, I have nothing better than calling it Schiefspieglerteutonics.
The Fraunhofer tracking
ZEISS has decided to call their refracting spotting scope, Diascope.
Following ZEISS, Thomas Baader has renamed the astroplanar remake into Eudiascopic
It's Tuesday noon here, time for a cup of coffee and a cake, but not Leibnitzkeks, I tell you
JG
6" F/5 Sky-Watcher achro, 2" BBHS Star Diagonal, 2" zenith prism, 1.25" Takahashi prism
Leica 82mm APO Televid
Eyepieces: Docter UWA; Leica B WW and WW Asph. Zoom; Leica HC Plan S and L, monocentric; Pentax SMC XW, O-, XO; Tak MC O, Carl Zeiss B WW, and Pl, E-Pl, S-Pl, W-Pl;
Swarovski SW; Baader Symmetric Diascope Edition; Nikon NAV SW, ; TMB supermonocentric; Rodenstock; Vixen HR; TV Delos
Filters: Astrodon, Astronomik, Baader, Balzers, Zeiss West and East, Lumicon
Binoculars (7x42 up to 15x85): Docter Nobilem, Leica Ultravid, Nikon Astroluxe, Swarovski EL Swarovision; BA8 (Kunming Optical)
Leica 82mm APO Televid
Eyepieces: Docter UWA; Leica B WW and WW Asph. Zoom; Leica HC Plan S and L, monocentric; Pentax SMC XW, O-, XO; Tak MC O, Carl Zeiss B WW, and Pl, E-Pl, S-Pl, W-Pl;
Swarovski SW; Baader Symmetric Diascope Edition; Nikon NAV SW, ; TMB supermonocentric; Rodenstock; Vixen HR; TV Delos
Filters: Astrodon, Astronomik, Baader, Balzers, Zeiss West and East, Lumicon
Binoculars (7x42 up to 15x85): Docter Nobilem, Leica Ultravid, Nikon Astroluxe, Swarovski EL Swarovision; BA8 (Kunming Optical)
- John Baars
- Co-Administrator
- Articles: 5
- Posts: 2749
- Joined: Sat May 11, 2019 9:00 am
- 4
- Location: Schiedam, Netherlands
- Status:
Offline
-
TSS Photo of the Day
TSS Awards Badges
Re: Should A Refractor Be Called A Reflector?
Pffffffff.....I am glad my refractors are still refractors.....
Refractors in frequency of use : *SW Evostar 120ED F/7.5 (all round ), * Vixen 102ED F/9 (vintage), both on Vixen GPDX.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
Amateur astronomer since 1970.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
Amateur astronomer since 1970.
- yobbo89
- Moderator
- Articles: 0
- Posts: 2599
- Joined: Sat May 11, 2019 7:44 pm
- 4
- Location: australia qld brisbane
- Status:
Offline
-
TSS Photo of the Day
Re: Should A Refractor Be Called A Reflector?
The topic reminds me of folded refractors which have 2 or more mirrors in them as well as a refracting front lense .
Here are some images from the web
Here are some images from the web
scopes :gso/bintel f4 12"truss tube, bresser messier ar127s /skywatcher 10'' dob,meade 12'' f10 lx200 sct
cameras : asi 1600mm-c/asi1600mm-c,asi120mc,prostar lp guidecam, nikkon d60, sony a7,asi 290 mm
mounts : eq6 pro/eq8/mesu 200 v2
filters : 2'' astronomik lp/badder lrgb h-a,sII,oIII,h-b,Baader Solar Continuum, chroma 3nm ha,sii,oiii,nii,rgb,lowglow,uv/ir,Thousand Oaks Solar Filter,1.25'' #47 violet,pro planet 742 ir,pro planet 807 ir,pro planet 642 bp ir.
extras : skywatcher f4 aplanatic cc, Baader MPCC MKIII Coma Corrector,Orion Field Flattener,zwo 1.25''adc.starlight maxi 2" 9x filter wheel,tele vue 2x barlow .
cameras : asi 1600mm-c/asi1600mm-c,asi120mc,prostar lp guidecam, nikkon d60, sony a7,asi 290 mm
mounts : eq6 pro/eq8/mesu 200 v2
filters : 2'' astronomik lp/badder lrgb h-a,sII,oIII,h-b,Baader Solar Continuum, chroma 3nm ha,sii,oiii,nii,rgb,lowglow,uv/ir,Thousand Oaks Solar Filter,1.25'' #47 violet,pro planet 742 ir,pro planet 807 ir,pro planet 642 bp ir.
extras : skywatcher f4 aplanatic cc, Baader MPCC MKIII Coma Corrector,Orion Field Flattener,zwo 1.25''adc.starlight maxi 2" 9x filter wheel,tele vue 2x barlow .
- KathyNS
- Co-Administrator
- Articles: 0
- Posts: 2616
- Joined: Thu Apr 25, 2019 11:47 am
- 5
- Location: Nova Scotia
- Status:
Offline
-
TSS Photo of the Day
TSS Awards Badges
Re: Should A Refractor Be Called A Reflector?
My Newtonian is a catadioptric, because it really doesn't work properly without a coma corrector.
DSO AP: Orion 200mm f/4 Newtonian Astrograph; ATIK 383L+; EFW2 filter wheel; Astrodon Ha,Oiii,LRGB filters; KWIQ/QHY5 guide scope; Planetary AP: Celestron C-11; ZWO ASI120MC; Portable: Celestron C-8 on HEQ5 pro; C-90 on wedge; 20x80 binos; Etc: Canon 350D; Various EPs, etc. Obs: 8' Exploradome; iOptron CEM60 (pier); Helena Observatory (H2O) Astrobin
- Don Alvarez
- Mars Ambassador
- Articles: 0
- Posts: 198
- Joined: Tue May 14, 2019 1:02 pm
- 4
- Location: Coral Springs
- Status:
Offline
-
TSS Awards Badges
Re: Should A Refractor Be Called A Reflector?
Telescopes: 10" SkyLine Dobsonian, 6" Apertura F5 Newt, Celestron Nextar GT90, Meade Infinity 80
EP: 5.5mm, 8.8mm, 14mm, 20mm, 24mm Meade 5000 UWA's, BCO's w/ Q-Turret, 26mm, 32mm, 40mm Meade 4000 Plossls, Orion Expanse, 30mm, 20mm, 15mm GSO Superview, Various others.
Binocs: 15x70 Celestron Skymaster, 10x50 Levenhuk Karma Pro, 10x42 Bushnell, 8x42 Sans & Streiffe
Mounts: Meade LX70 with dual axis motors, Celestron GT, More miscellaneous tripods than a Martian invasion.
"The heavens themselves, the planets, and this center observe degree, priority, and place,
Insisture, course, proportion, season, form, office, and custom, in all line of order.”
EP: 5.5mm, 8.8mm, 14mm, 20mm, 24mm Meade 5000 UWA's, BCO's w/ Q-Turret, 26mm, 32mm, 40mm Meade 4000 Plossls, Orion Expanse, 30mm, 20mm, 15mm GSO Superview, Various others.
Binocs: 15x70 Celestron Skymaster, 10x50 Levenhuk Karma Pro, 10x42 Bushnell, 8x42 Sans & Streiffe
Mounts: Meade LX70 with dual axis motors, Celestron GT, More miscellaneous tripods than a Martian invasion.
"The heavens themselves, the planets, and this center observe degree, priority, and place,
Insisture, course, proportion, season, form, office, and custom, in all line of order.”
- Marcelo F.
- Moon Ambassador
- Articles: 0
- Posts: 99
- Joined: Tue Oct 29, 2019 8:50 am
- 4
- Location: Lisbon
- Status:
Offline
Re: Should A Refractor Be Called A Reflector?
Telescope: Dobson N 76/300 FirstScope DOB w/ DIY tripod adapter, 5x24 Finderscope.
Eps: 4mm Ramsden, 6mm Huygenian, 12.5mm Huygenian, 20mm Huygenian, 4mm Plossl, 10mm Plossl, 20mm Plossl, Barlow 2x, Barlow 3x, Barlow 5x, Solomark LP Filter, Dark Green Moon Filter.
Binoculars: Bresser National Geographic 7x50, Omegon Nightstar 20x80
Camera: none
Messier: 7/110
Eps: 4mm Ramsden, 6mm Huygenian, 12.5mm Huygenian, 20mm Huygenian, 4mm Plossl, 10mm Plossl, 20mm Plossl, Barlow 2x, Barlow 3x, Barlow 5x, Solomark LP Filter, Dark Green Moon Filter.
Binoculars: Bresser National Geographic 7x50, Omegon Nightstar 20x80
Camera: none
Messier: 7/110
- helicon
- Co-Administrator
- Articles: 592
- Posts: 12374
- Joined: Mon May 06, 2019 1:35 pm
- 4
- Location: Washington
- Status:
Offline
-
TSS Awards Badges
Re: Should A Refractor Be Called A Reflector?
I also am glad that my refractor is truly a refractor. Though I could call it "Fred".
-Michael
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
Binoculars: Celestron SkyMaster 15x70, Bushnell 10x50
Eyepieces: Various, GSO Superview, 9mm Plossl, Celestron 25mm Plossl
Camera: ZWO ASI 120
Naked Eye: Two Eyeballs
Latitude: 48.7229° N
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
Binoculars: Celestron SkyMaster 15x70, Bushnell 10x50
Eyepieces: Various, GSO Superview, 9mm Plossl, Celestron 25mm Plossl
Camera: ZWO ASI 120
Naked Eye: Two Eyeballs
Latitude: 48.7229° N
- j.gardavsky
- Orion Spur Ambassador
- Articles: 0
- Posts: 711
- Joined: Mon Sep 23, 2019 1:52 pm
- 4
- Location: Germany
- Status:
Offline
-
TSS Awards Badges
Re: Should A Refractor Be Called A Reflector?
Kathy,
and when it makes spikes around the stars,
then it is catadioptric asterix,
JG
6" F/5 Sky-Watcher achro, 2" BBHS Star Diagonal, 2" zenith prism, 1.25" Takahashi prism
Leica 82mm APO Televid
Eyepieces: Docter UWA; Leica B WW and WW Asph. Zoom; Leica HC Plan S and L, monocentric; Pentax SMC XW, O-, XO; Tak MC O, Carl Zeiss B WW, and Pl, E-Pl, S-Pl, W-Pl;
Swarovski SW; Baader Symmetric Diascope Edition; Nikon NAV SW, ; TMB supermonocentric; Rodenstock; Vixen HR; TV Delos
Filters: Astrodon, Astronomik, Baader, Balzers, Zeiss West and East, Lumicon
Binoculars (7x42 up to 15x85): Docter Nobilem, Leica Ultravid, Nikon Astroluxe, Swarovski EL Swarovision; BA8 (Kunming Optical)
Leica 82mm APO Televid
Eyepieces: Docter UWA; Leica B WW and WW Asph. Zoom; Leica HC Plan S and L, monocentric; Pentax SMC XW, O-, XO; Tak MC O, Carl Zeiss B WW, and Pl, E-Pl, S-Pl, W-Pl;
Swarovski SW; Baader Symmetric Diascope Edition; Nikon NAV SW, ; TMB supermonocentric; Rodenstock; Vixen HR; TV Delos
Filters: Astrodon, Astronomik, Baader, Balzers, Zeiss West and East, Lumicon
Binoculars (7x42 up to 15x85): Docter Nobilem, Leica Ultravid, Nikon Astroluxe, Swarovski EL Swarovision; BA8 (Kunming Optical)
- russmax
- Mars Ambassador
- Articles: 0
- Posts: 142
- Joined: Tue Nov 19, 2019 12:20 am
- 4
- Location: Austin, Texas, United States
- Status:
Offline
Re: Should A Refractor Be Called A Reflector?
A refractor is called a refractor because that is its name. Likewise with a reflector.
Language is by usage, so if you overthink it, people might tease you for it, as shown in the posts above.
--Russmax
Language is by usage, so if you overthink it, people might tease you for it, as shown in the posts above.
--Russmax
----------
Celestron AVX 8" SCT & Omni XLT 102 AZ
Celestron AVX 8" SCT & Omni XLT 102 AZ
- Mandrew
- Moon Ambassador
- Articles: 0
- Posts: 67
- Joined: Wed Dec 04, 2019 5:07 am
- 4
- Location: USA Illinois
- Status:
Offline
Re: Should A Refractor Be Called A Reflector?
It’s a telescope!
Devout bino lover and Lunaholic! Scopes - Celestron RASA 8, Orion 180mm Mak-Cass, 6"f8 dob, ST80. binos - Orion 7x50, Oberwerk 8x56 LW, Oberwerk 10x50 Deluxe, 15x70 Deluxe, Oberwerk 100mm ED Binocular telescope.
Create an account or sign in to join the discussion
You need to be a member in order to post a reply
Create an account
Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute