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cheekygeek
Joined: 05 Aug 2008
Posts: 183
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 Posted: Fri Jul 29, 2011 8:48 pm Post subject: Seeking info on Celestron 500mm f8 mirror lens |
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cheekygeek wrote:
Hey y'all,
Does anybody have any info on a multicoated, black, Celestron mirror lens: 500mm f/8. It uses T-mounts, accepts 72mm hoods (a Celestron branded hood is included, with Celestron branded case) and focuses down to 1:3 ratio. It says "Made in Japan for Celestron".
Any info on the maker, etc. would be appreciated.
_________________
DSLR: Pentax K-3 II, D-BG5 grip, SLR: Pentax SP500, Pentax SP, Pentax SP II, Pentax Spotmatic F, MX, ME-Super, Super Program, pZ-1
Lenses:
Tele-Takumar: 300mm f6.3; 200mm f5.6; Takumar 200mm f3.5; Takumar 135mm f3.5; Macro-Takumar 50mm f4 (1:1)Super Takumars: 24mm f3.5, 55mm f2.0, 135mm f3.5; S-M-C Takumar 35mm f3.5, 50mm Macro f4.0 (1:2), 50mm f1.4, 135mm f2.5 (v2); Pentax SMC K 17mm f4 fisheye; Pentax-A: 50mm f1.4, 35-70mm f4; Pentacon: 50mm f1.8; Spiratone 85mm f1.8 (y/s); Vivitar: 85mm f1.8 preset; Carl Zeiss Jena Flektogon Electric 35mm f2,4 |
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WolverineX
Joined: 19 Apr 2009
Posts: 1693
Location: Zagreb , Croatia , Europe
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| Posted: Fri Jul 29, 2011 10:43 pm Post subject: |
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WolverineX wrote:
celestron is brand usually connected with telescopes
_________________
my tools:Oly E-M5 + 45mm/1.8 + Oly E-520 + 12-60 + 14-42 + 70-300 + Sigma 105mm + FL-50R + EC20 + SRF-11 ring flash
http://forum.mflenses.com/wolverinex-testing-my-lenses-series-link-list-t39524.html |
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cheekygeek
Joined: 05 Aug 2008
Posts: 183
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| Posted: Sat Jul 30, 2011 1:26 am Post subject: |
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cheekygeek wrote:
This is true. But in the past the also sold t-mount catadioptric lenses for cameras. Not sure of the years though. I see a lot about a 500mm f5.6 that was supposed to be a low contrast lens, but not finding much about their branded f/8 lens.
Celestron mirror lenses apparently have a bit of a cult following.
_________________
DSLR: Pentax K-3 II, D-BG5 grip, SLR: Pentax SP500, Pentax SP, Pentax SP II, Pentax Spotmatic F, MX, ME-Super, Super Program, pZ-1
Lenses:
Tele-Takumar: 300mm f6.3; 200mm f5.6; Takumar 200mm f3.5; Takumar 135mm f3.5; Macro-Takumar 50mm f4 (1:1)Super Takumars: 24mm f3.5, 55mm f2.0, 135mm f3.5; S-M-C Takumar 35mm f3.5, 50mm Macro f4.0 (1:2), 50mm f1.4, 135mm f2.5 (v2); Pentax SMC K 17mm f4 fisheye; Pentax-A: 50mm f1.4, 35-70mm f4; Pentacon: 50mm f1.8; Spiratone 85mm f1.8 (y/s); Vivitar: 85mm f1.8 preset; Carl Zeiss Jena Flektogon Electric 35mm f2,4 |
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Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
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| Posted: Sat Jul 30, 2011 2:13 am Post subject: |
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Kathmandu wrote:
Link Here
I read in the pentax forums of someone using this- and theres a downloadable manual at that link that talks of its use with cameras-(page 10).
PS-May the force be with you.
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kathmandu
Sony α 700 DSLR
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cheekygeek
Joined: 05 Aug 2008
Posts: 183
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| Posted: Sat Jul 30, 2011 1:58 pm Post subject: |
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cheekygeek wrote:
Nope. This is not a spotting scope. It is a camera mirror lens. I'll upload some pics of it.
Found one:
 [/img]
_________________
DSLR: Pentax K-3 II, D-BG5 grip, SLR: Pentax SP500, Pentax SP, Pentax SP II, Pentax Spotmatic F, MX, ME-Super, Super Program, pZ-1
Lenses:
Tele-Takumar: 300mm f6.3; 200mm f5.6; Takumar 200mm f3.5; Takumar 135mm f3.5; Macro-Takumar 50mm f4 (1:1)Super Takumars: 24mm f3.5, 55mm f2.0, 135mm f3.5; S-M-C Takumar 35mm f3.5, 50mm Macro f4.0 (1:2), 50mm f1.4, 135mm f2.5 (v2); Pentax SMC K 17mm f4 fisheye; Pentax-A: 50mm f1.4, 35-70mm f4; Pentacon: 50mm f1.8; Spiratone 85mm f1.8 (y/s); Vivitar: 85mm f1.8 preset; Carl Zeiss Jena Flektogon Electric 35mm f2,4 |
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visualopsins
Joined: 05 Mar 2009
Posts: 10959
Location: California
Expire: 2025-04-11
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| Posted: Sat Jul 30, 2011 4:01 pm Post subject: |
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visualopsins wrote:
| Kathmandu wrote: |
Link Here
I read in the pentax forums of someone using this- and theres a downloadable manual at that link that talks of its use with cameras-(page 10).
PS-May the force be with you. |
That's the 1250mm f/10...
| Quote: |
| Most Celestron spotting scopes are designed to be dual purpose visual and photographic instruments. For photographic use, all that’s required is a T-Adapter for the spotting scope and the correct T-ring for your particular 35mm SLR camera. |
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX-A ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (151B), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
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| Posted: Sat Jul 30, 2011 4:26 pm Post subject: |
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Kathmandu wrote:
| visualopsins wrote: |
| Kathmandu wrote: |
Link Here
I read in the pentax forums of someone using this- and theres a downloadable manual at that link that talks of its use with cameras-(page 10).
PS-May the force be with you. |
That's the 1250mm f/10...
| Quote: |
| Most Celestron spotting scopes are designed to be dual purpose visual and photographic instruments. For photographic use, all that’s required is a T-Adapter for the spotting scope and the correct T-ring for your particular 35mm SLR camera. |
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He says that this isn't the kind-I thought the manual might be insightful-as obviously no one has found any more information on it.
He is looking for info on the lens pictured above in his last quote.
I am coming up with nothing hopefully someone who has experienced using will show up . Appears to be a tough lens to find any info on "cheekygeek".
Heres one a Macro- Multicoated Click here to see on Ebay
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kathmandu
Sony α 700 DSLR
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PBFACTS
Joined: 24 Dec 2008
Posts: 568
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| Posted: Sat Jul 30, 2011 5:31 pm Post subject: |
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PBFACTS wrote:
| cheekygeek wrote: |
Nope. This is not a spotting scope. It is a camera mirror lens. I'll upload some pics of it.
Found one:
[/img] |
Looks like soligor c/d 500mm mirror = medium quality (far lower than tokina / tamron / nikon / olympus ...)
_________________
OM USER .. I KEEP/USE:
Om2 sp + T32 (grip/filter/zoom) + T8
+ Zuiko 16mm 3.5 / 55mm 1.2 / 65-200 4/ x1.4
+ Sigma 8mm 4.0 / 14mm 3.5 / 18-35 3.5-4.5
+ Tamron 35/105 2.8
+Tokina 150/500 5.6
+ Kiron 105/2.8 macro 1:1
+ Vivitar S1 90/180 falst field macro
+ 2x Doubler HR7
>>I SELL: OM10 + OM4ti
+ i sell: OM Md1 + Md 2 + Grip PowerPack + charger
+ i sell: OM Zuiko 24mm 2.8 / 28mm 3.5 / 50mm 1.8 / 50mm 1.4 / 50mm 3.5 macro / 35-70 3.6 / 35-105 3.5-4.5 / 75-150 4 / 500mm / 2xA
+ i sell: OM Kiron 28/105 3.2-4.5 / 1.5 converter
+ i sell: OM Makinon reflex 5.6/300 + Spector reflex (makinon) 500mm
+ i sell: OM Macro panagor extender 1:1
+ i sell: OM Sigma 16mm 2.8 fisheye (last version) / 21-35 3.5-4.2 ot/ 28-70 2.8 /1000mm mirror
+ i sell: Tamron 28-70 3.5-4.5 / 28-80 sp 3.5-4.2 / 28-135 sp 4-4.5 / /28-200 3.5 / 35-135 3..5-4.5 / 90mm sp macro 1:1 2.8
+ i sell: OM Soligor 2x doubler / x3 converte
+ i sell: Soligor FisheEye x0.15
+ i sell: OM Tokina 28/135 4-4.6 / 70/210 3.5 (= vivitar S1 v2)
+ i sell: OM Vivitar 28-70 3.5-4.8 / 28-90 s1 2.8-3.5 / 35-70 2.8-3.8 / 55/2.8 Macro 1:1 (komine) / 70-150 3.8 ot (kiron) / 75-150 ot 3.8 (tokina + 2x matched)
+ i sell : OM cosina 100-500 5.6/8 |
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Kathmandu
Joined: 09 Dec 2009
Posts: 1479
Location: (Kathmandu,Nepal. Currently)Pacific Northwest, USA
Expire: 2012-04-08
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| Posted: Sat Jul 30, 2011 7:28 pm Post subject: |
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Kathmandu wrote:
I rule out the Soligor Cd- "cheekygeek" says that the Celestron takes a 72 mm thread hood and the Soligor CD takes 77mm.
"Nesster"-Jussi has/had one on his flickr.
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kathmandu
Sony α 700 DSLR
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visualopsins
Joined: 05 Mar 2009
Posts: 10959
Location: California
Expire: 2025-04-11
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| Posted: Sun Jul 31, 2011 12:11 am Post subject: |
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visualopsins wrote:
My eyes spy where this is going  http://www.pentaxforums.com/forums/photographic-equipment-sale/153792-sale-celestron-500mm-f8-multi-coated-mirror-lens-w-hood-cap-case.html
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX-A ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (151B), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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Phenix jc
Joined: 19 Dec 2009
Posts: 398
Location: France
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| Posted: Tue Aug 02, 2011 9:07 pm Post subject: |
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Phenix jc wrote:
Thus spoke the master Robert Monaghan...
"Celestron, Meade, Questar, Zoomar...
These manufacturers enjoy cult status for their mirror lenses. In general, a fast mirror lens is much more expensive than a slow one. The earliest mirrors were generally very fast (e.g., Nikon 500mm f/5). Subsequently, the trend has been towards a slower less costly and bulky mirror lens size (e.g., 500mm f/8, 1000mm f/10 or f/11). So any specialty mirror or telescope maker enjoys cult status for providing a faster mirror lens alternative, even if the price is equally impressive.
The requirements of telescope optics are quite different from the needs of cameras. The eye has an acceptance size of only 7mm or so, whereas a 24x36mm film area is much more difficult to cover without various forms of coma and other distortion. In other words, you probably would find most camera lenses make less than optimal telescopes, and vice versa.
However, these third party lens manufacturers provide a series of telescopes and mirror lenses which are adapted or suitable for camera use. You have probably already guessed that such specialty lenses are not needed by most photographers, and few of those who might need one can afford one.
The performance of these optics is often just short of amazing. Questar even claims that its telescopes reach or exceed the theoretical maximum resolution for telescopes of their size. Most telescopes have mirrors that are within 1/4th of a wavelength of light of being perfectly ground. I have a ten inch wide mirror telescope whose surface is accurate to within 1/10th of a wavelength of light! By comparison, glass lens optics are far less precisely aligned and positioned."
for example, here
_________________
"Plonger les choses dans la lumière, c'est les plonger dans l'infini" Léonard De Vinci
f/1.2 club Zuiko : 50/1.2, 55/1.2 Rokkor : 50/1.2, 58/1.2 Nikkor : 50/1.2, 55/1.2 Third Party : Porst(Fujinon-X) 50/1.2, Porst 55/1.2 Canon : S 50/1.2, nFD 50/1.2, FL 55/1.2, R 58/1.2, nFD 85/1.2 Hexanon : 57/1.2 Nokton : 50/1.1 |
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