A VMC200L

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A VMC200L

#1

Post by notFritzArgelander »


I have troubles with astigmatism and field curvature for visual use in SCT and RC designs. The field always looks gauzy or hazy to me. I discovered that aplanatic designs were (to my eyes) crisper and sharper with better contrast. I used to own an Edge 9.25 which was very satisfactory almost refractor like and would give my Z12 a run for the money on features in bright galaxies. Currently lacking a medium to large Cat in my toolkit I'm considering another Edge or a Vixen VMC design. I had already taken a VMC110L and it's my workhorse for grab and go sessions. But there are significant differences in mechanical design and likely optical fabrication between the smaller VMCs (95 and 110) and the larger ones (200, 260, 330mm). So it seemed prudent as a risk reduction exercise to opt for the VMC200L. The fact that it was on sale with no accessories for under $1k was an offer I couldn't refuse.

https://www.vixenoptics.com/Vixen-VMC20 ... /58291.htm

So what is the VMC design? Vixen describes it as a "Field Maksutov" design but there are other names for it. "Sub aperture Maksutov" and there are some who prefer to call it a Klevtsov Cassegrain because of some superficial similarities.

https://en.wikipedia.org/wiki/Klevtsov– ... _telescope

A careful study of the VMC layout show significant differences! The Klevtsov design is more complex with a secondary group that consists of a Mangin mirror

Brian Deis of Vixen Optics and MrStarGuy Inc was helpful in answering a few questions about collimation mechanics, The order was placed and the OTA arrived swiftly.

Here is the scope just out of the box.
IMG_0719.jpg
A look down the open end of the tube reveals zero dust or debris.
IMG_0720.jpg
A first light report is at viewtopic.php?f=6&t=9872

A last look down the OTA (farewell to cleanliness :lol:
IMG_0741.jpg
And ready to go!
IMG_0744.jpg
Despite first light being in a brightly lit suburban area the scope performed as expected. Will continue to a dark site observing opportunity ASAP so I can compare with the Edge design. This scope is definitely a keeper on its own merits 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
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Re: A VMC200L

#2

Post by Graeme1858 »


She's a fine looking telescope! I hope her optics match your own.

Regards

Graeme
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Re: A VMC200L

#3

Post by notFritzArgelander »


Graeme1858 wrote: Mon May 11, 2020 5:34 am She's a fine looking telescope! I hope her optics match your own.

Regards

Graeme
Thanks! So far so good....
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: A VMC200L

#4

Post by Bigzmey »


Congrats nFA! Looking forward more reports with this beauty.
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: A VMC200L

#5

Post by Voyageur »


Congratulations! I have been very happy with mine. What diagonal are you using? I use the TeleVue Everbrite dialectric.

I know you like Panoptics. I often use my TeleVue 22 mm Panoptic with it, unfortunately a discontinued EP. I would like to try either the 27 or 35 Panoptic.
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.
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Re: A VMC200L

#6

Post by notFritzArgelander »


Voyageur wrote: Mon May 11, 2020 6:56 pm Congratulations! I have been very happy with mine. What diagonal are you using? I use the TeleVue Everbrite dialectric.

I know you like Panoptics. I often use my TeleVue 22 mm Panoptic with it, unfortunately a discontinued EP. I would like to try either the 27 or 35 Panoptic.
For first light I borrowed the Stellarvue 2" diagonal. I have the Vixen flip mirror but haven't tried it out yet. There's likely a dedicated diagonal lurking in the future. :)
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: A VMC200L

#7

Post by Lady Fraktor »


A very nice looking telescope nFA, I hope the views are as good as it looks!
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: A VMC200L

#8

Post by Thefatkitty »


nFA, that is a stunning looking scope! Good for you on the purchase, and glad you're so far happy with it. Must go read your first light report; hopefully no neighborhood hounds... ;)

"farewell to cleanliness" :lol: So true!

All the best,
Mark

"The Hankmeister" Celestron 8SE, orange tube Vixen made C80, CG4 & AZ-EQ5 mounts.
Too much Towa glass/mirrors.

H/A - PST stage 2 mod with a Baader 90mm ERF on a Celestron XLT 102 (thanks Mike!)
Ca-K - W/O 61mm, Antares 1.6 barlow, Baader 3.8 OD and Ca-K filters with a ZWO ASI174mm.
W/L - C80-HD with Baader 5.0 & 3.8 Solar film, Solar Continuum 7.5nm and UV/IR filters with a Canon EOS 550D.

Oh yeah, and Solar Cycle 25 :D
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Re: A VMC200L

#9

Post by notFritzArgelander »


Lady Fraktor wrote: Mon May 11, 2020 8:29 pm A very nice looking telescope nFA, I hope the views are as good as it looks!
Weather isn’t going to cooperate for some days, perhaps a week. I’m going to compare lunar/ planetary with the MK66 and evaluate nebulae from a proper dark site.
Thefatkitty wrote: Mon May 11, 2020 8:37 pm nFA, that is a stunning looking scope! Good for you on the purchase, and glad you're so far happy with it. Must go read your first light report; hopefully no neighborhood hounds... ;)

"farewell to cleanliness" :lol: So true!

All the best,
Thanks! The hound population has decreased by one. ;)
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: A VMC200L

#10

Post by Lola Bruce »


I believe you will like it. The one I tried was sharp and had great contrast. The fat vanes show a bit strong though. The Vixen really liked a Nagler 22 and Pentax 10.

Bruce
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Re: A VMC200L

#11

Post by bladekeeper »


Congrats on a great new scope, notFritz! :)
Bryan
Scopes: Apertura AD12 f/5; Celestron C6-R f/8; ES AR127 f/6.4; Stellarvue SV102T f/7; iOptron MC90 f/13.3; Orion ST80A f/5; ES ED80 f/6; Celestron Premium 80 f/11.4; Celestron C80 f/11.4; Unitron Model 142 f/16; Meade NG60 f/10
Mounts: Celestron AVX; Bresser EXOS-2; ES Twilight I; ES Twilight II; iOptron Cube-G; AZ3/wood tripod; Vixen Polaris
Binoculars: Pentax PCF WP II 10×50, Bresser Corvette 10×50, Bresser Hunter 16×50 and 8×40, Garrett Gemini 12×60 LW, Gordon 10×50, Apogee 20×100

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Re: A VMC200L

#12

Post by notFritzArgelander »


bladekeeper wrote: Tue May 12, 2020 3:43 am Congrats on a great new scope, notFritz! :)
Thanks. Of course clouds until the weekend, but I did get a first light in.
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: A VMC200L

#13

Post by notFritzArgelander »


OK since I've decided that the VMC200L is a keeper, I've been accessorizing. A shout out to Brian Deis at Vixen Optics NA / Mr Star Guy who helped me correct some errors in judgement with regarded to the balance issues I mentioned up thread. I didn't want to get rid of the super handy handle and install tube rings so for the balance issues I chose magnets and weights.

https://www.amazon.com/gp/product/B083C ... UTF8&psc=1

https://www.amazon.com/gp/product/B07W8 ... UTF8&psc=1

There is very little ferrous metal in the OTA but there is enough on the cladding of the dovetail plate that it works fine.

In addition I got the flip mirror diagonal, an extension tube, and a pair of 60 to 50.8mm eyepiece adapters.

https://www.vixenoptics.com/Vixen-Flip- ... p/2680.htm
https://www.vixenoptics.com/Vixen-Exten ... p/2956.htm
https://www.vixenoptics.com/Vixen-Eyepi ... /37293.htm

In addition I got a pair of 42mm to 50.8 adapters and a soft case.

https://www.vixenoptics.com/Vixen-Eyepi ... m?CartID=2
https://www.vixenoptics.com/StarGuy-Lar ... m?CartID=1

So now I am ready to travel!
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: A VMC200L

#14

Post by Graeme1858 »


notFritzArgelander wrote: Fri Dec 25, 2020 7:10 pm OK since I've decided that the VMC200L is a keeper, I've been accessorizing......

So now I am ready to travel!

Looks like a fine set of accessories!

Where will the first location on the itinerary be?

Regards

Graeme
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ASI1600MM Pro, ASI294MC Pro, ASI224MC
ZWO EFW, ZWO OAG, ASI220MM Mini.
APM 11x70 ED APO Binoculars.

https://www.averywayobservatory.co.uk/
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Re: A VMC200L

#15

Post by notFritzArgelander »


Graeme1858 wrote: Fri Dec 25, 2020 9:07 pm
notFritzArgelander wrote: Fri Dec 25, 2020 7:10 pm OK since I've decided that the VMC200L is a keeper, I've been accessorizing......

So now I am ready to travel!

Looks like a fine set of accessories!

Where will the first location on the itinerary be?

Regards

Graeme
It looks like I’m going to be able to try the COVID-19 vaccine early. Family in SLC first then dark sites in UT and NM maybe SW CO. The plan is to find a better place for living and observing. I’ll take a refractor too, the SV or the TS.
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: A VMC200L

#16

Post by Graeme1858 »


That sounds like a great adventure!

I hope virus control reaches a level where you can realise your dream! :)

Regards

Graeme
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ASI1600MM Pro, ASI294MC Pro, ASI224MC
ZWO EFW, ZWO OAG, ASI220MM Mini.
APM 11x70 ED APO Binoculars.

https://www.averywayobservatory.co.uk/
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Re: A VMC200L

#17

Post by notFritzArgelander »


Graeme1858 wrote: Fri Dec 25, 2020 9:36 pm That sounds like a great adventure!

I hope virus control reaches a level where you can realise your dream! :)

Regards

Graeme
Thanks! I think we are all hoping that control reaches a level where some normalcy can be attained. :)
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: A VMC200L

#18

Post by Bigzmey »


Congrats on the new toys nFA! I hope you will have a chance to try them soon.
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: A VMC200L

#19

Post by Lady Fraktor »


I hope all goes well and the location scouting is a success :)
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: A VMC200L

#20

Post by Jones »


Somewhere along I-10, between Odessa TX, AND Tucson AZ.
Dark, dry, 300 clear nites a year.
Arizona- where the sky's are not cloudy all night.

Triple lensed fracs are so yummy when looking at planets.
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