Pentax XO 2.5mm and 5mm wanted

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Pentax XO 2.5mm and 5mm wanted

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willis » 2016-01-04, 22:56

Pls PM me ur offer. Thanks!
Tak FS60C, APM-LOMO 80/480, APM-TMB 105/650, SW Black Diamond 120ED, Borg 125SD, SW 12" Dobs , Lunt LS35T, Lunt LS80T
TMB Super Mono 4mm, Pentax XO 2.5mm, Baader Planetarium 8-24mm, Nagler (2-4mm, 3-6mm, 13mm), Ethos (3.7mm, 6mm, 10mm), Explore Scientific 100º (14mm, 20mm)
DBK 21, DMK 21, DMK 41, DMK 51, ASI 178MC
Nikon D810A, Canon 5D II, Fujifilm X-T10
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Re: Pentax XO 2.5mm and 5mm wanted

文章社長 » 2016-01-05, 03:21

why? we already proved that TMB Supermonocentric is better, from A-B test on Jupiter through 203APO.
兩個天文台 - 白鷺湖天文台、西藏自動化天文觀測站
主鏡 - Officina Stellare 500 口徑f3.8 RiFast攝星儀、APM/TMB 254 f9 APO、SkyWatcher Dob 18、305 f8.5 牛頓鏡、Paramount ME 赤道儀
配件 - 2 full sets of Supermonocentrics、Baader Mark V Binoviewer、Ethos、Canon 5D Mark II Mod、FLI Proline 16803冷凍相機、Mercedes SUV
星河科研社 http://www.astro.hk 電郵 saviofong@astro.hk
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Re: Pentax XO 2.5mm and 5mm wanted

文章willis » 2016-01-05, 05:56

Yes, I know. As my refractors are short focal lengths, short focal length EPs are suitable for me. u only sold me the TMB 4mm, but not the 5mm. I need to find substitutes for that. Do u remember once u told me Markus got a Pentax XO 2.5mm in his EP box? It means that Pentax shouldn't be bad. Not the best, but should be excellent.
Tak FS60C, APM-LOMO 80/480, APM-TMB 105/650, SW Black Diamond 120ED, Borg 125SD, SW 12" Dobs , Lunt LS35T, Lunt LS80T
TMB Super Mono 4mm, Pentax XO 2.5mm, Baader Planetarium 8-24mm, Nagler (2-4mm, 3-6mm, 13mm), Ethos (3.7mm, 6mm, 10mm), Explore Scientific 100º (14mm, 20mm)
DBK 21, DMK 21, DMK 41, DMK 51, ASI 178MC
Nikon D810A, Canon 5D II, Fujifilm X-T10
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willis
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文章: 1526
註冊時間: 2010-02-01, 17:50
來自: HK

Re: Pentax XO 2.5mm and 5mm wanted

文章oldfield » 2016-01-05, 09:01

oldfield
 
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註冊時間: 2010-05-10, 11:46

Re: Pentax XO 2.5mm and 5mm wanted

文章willis » 2016-01-05, 09:08

This one is ridiculously high!
Tak FS60C, APM-LOMO 80/480, APM-TMB 105/650, SW Black Diamond 120ED, Borg 125SD, SW 12" Dobs , Lunt LS35T, Lunt LS80T
TMB Super Mono 4mm, Pentax XO 2.5mm, Baader Planetarium 8-24mm, Nagler (2-4mm, 3-6mm, 13mm), Ethos (3.7mm, 6mm, 10mm), Explore Scientific 100º (14mm, 20mm)
DBK 21, DMK 21, DMK 41, DMK 51, ASI 178MC
Nikon D810A, Canon 5D II, Fujifilm X-T10
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willis
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文章: 1526
註冊時間: 2010-02-01, 17:50
來自: HK

Re: Pentax XO 2.5mm and 5mm wanted

文章社長 » 2016-01-05, 12:04

willis 寫:Yes, I know. As my refractors are short focal lengths, short focal length EPs are suitable for me. u only sold me the TMB 4mm, but not the 5mm. I need to find substitutes for that. Do u remember once u told me Markus got a Pentax XO 2.5mm in his EP box? It means that Pentax shouldn't be bad. Not the best, but should be excellent.


He had different eyepieces for different reason, e.g., he had Televue Radians for casual viewing, especially when he is tired after work,

viewtopic.php?f=13&t=85

So he got Pentax XO in the box doesn't means he rated that higher than TMB Supermonocentric.
兩個天文台 - 白鷺湖天文台、西藏自動化天文觀測站
主鏡 - Officina Stellare 500 口徑f3.8 RiFast攝星儀、APM/TMB 254 f9 APO、SkyWatcher Dob 18、305 f8.5 牛頓鏡、Paramount ME 赤道儀
配件 - 2 full sets of Supermonocentrics、Baader Mark V Binoviewer、Ethos、Canon 5D Mark II Mod、FLI Proline 16803冷凍相機、Mercedes SUV
星河科研社 http://www.astro.hk 電郵 saviofong@astro.hk
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文章: 12686
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Re: Pentax XO 2.5mm and 5mm wanted

文章willis » 2016-01-05, 12:31

社長 寫:
willis 寫:Yes, I know. As my refractors are short focal lengths, short focal length EPs are suitable for me. u only sold me the TMB 4mm, but not the 5mm. I need to find substitutes for that. Do u remember once u told me Markus got a Pentax XO 2.5mm in his EP box? It means that Pentax shouldn't be bad. Not the best, but should be excellent.


He had different eyepieces for different reason, e.g., he had Televue Radians for casual viewing, especially when he is tired after work,

viewtopic.php?f=13&t=85

So he got Pentax XO in the box doesn't means he rated that higher than TMB Supermonocentric.


I know TMB Supermono is no doubt better than Pentax XO. But
1. TMB has no focal length shorter than 4mm. So it is appropriate to buy XO 2.5mm
2. You don't sell me the TMB 5mm. It is almost hopeless to get one. I know there were some people bought Pentax XO in HK during the Mars conjunction years ago. So the chance to get Pentax is higher.

Anyway, if u sell me the TMB 5mm, the problem is solved.....
Tak FS60C, APM-LOMO 80/480, APM-TMB 105/650, SW Black Diamond 120ED, Borg 125SD, SW 12" Dobs , Lunt LS35T, Lunt LS80T
TMB Super Mono 4mm, Pentax XO 2.5mm, Baader Planetarium 8-24mm, Nagler (2-4mm, 3-6mm, 13mm), Ethos (3.7mm, 6mm, 10mm), Explore Scientific 100º (14mm, 20mm)
DBK 21, DMK 21, DMK 41, DMK 51, ASI 178MC
Nikon D810A, Canon 5D II, Fujifilm X-T10
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willis
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文章: 1526
註冊時間: 2010-02-01, 17:50
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Re: Pentax XO 2.5mm and 5mm wanted

文章社長 » 2016-01-05, 12:53

I had been telling you to get some TMB Supermonocentrics since you took the 105APO from me, now I have only very last few ones, for big APO owners (8" and up), so don't blame me on this.

you can always look for used Mono 5 from used market overseas, definitely cheaper than the Pentax one on ebay as posted by Oldfield.
兩個天文台 - 白鷺湖天文台、西藏自動化天文觀測站
主鏡 - Officina Stellare 500 口徑f3.8 RiFast攝星儀、APM/TMB 254 f9 APO、SkyWatcher Dob 18、305 f8.5 牛頓鏡、Paramount ME 赤道儀
配件 - 2 full sets of Supermonocentrics、Baader Mark V Binoviewer、Ethos、Canon 5D Mark II Mod、FLI Proline 16803冷凍相機、Mercedes SUV
星河科研社 http://www.astro.hk 電郵 saviofong@astro.hk
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文章: 12686
註冊時間: 2010-02-01, 14:17
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Re: Pentax XO 2.5mm and 5mm wanted

文章willis » 2016-01-05, 13:05

I am not blaming u. Anyway, to get TMB Supermono is kind of fate now. I don't expect much on getting a TMB 5mm. So Pentax XO 5mm is easier. The ultimately goal is to get two for bino-viewing. Luckily, I got one brand new Pentax XO 2.5 from Japan auction and one brand new TMB 1.8X from eBay recently. These two probably the last brand new antiques in the market. If I can get two of each, I can have ultimate binoview....
Tak FS60C, APM-LOMO 80/480, APM-TMB 105/650, SW Black Diamond 120ED, Borg 125SD, SW 12" Dobs , Lunt LS35T, Lunt LS80T
TMB Super Mono 4mm, Pentax XO 2.5mm, Baader Planetarium 8-24mm, Nagler (2-4mm, 3-6mm, 13mm), Ethos (3.7mm, 6mm, 10mm), Explore Scientific 100º (14mm, 20mm)
DBK 21, DMK 21, DMK 41, DMK 51, ASI 178MC
Nikon D810A, Canon 5D II, Fujifilm X-T10
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willis
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文章: 1526
註冊時間: 2010-02-01, 17:50
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Re: Pentax XO 2.5mm and 5mm wanted

文章社長 » 2016-01-05, 13:09

you think at f/6.2, your scope have enough light gathering power for splitting the light into binoviewer and observing through path corrector of at least 1.25x & 5mm eyepieces?
兩個天文台 - 白鷺湖天文台、西藏自動化天文觀測站
主鏡 - Officina Stellare 500 口徑f3.8 RiFast攝星儀、APM/TMB 254 f9 APO、SkyWatcher Dob 18、305 f8.5 牛頓鏡、Paramount ME 赤道儀
配件 - 2 full sets of Supermonocentrics、Baader Mark V Binoviewer、Ethos、Canon 5D Mark II Mod、FLI Proline 16803冷凍相機、Mercedes SUV
星河科研社 http://www.astro.hk 電郵 saviofong@astro.hk
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Site Admin
 
文章: 12686
註冊時間: 2010-02-01, 14:17
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Re: Pentax XO 2.5mm and 5mm wanted

文章willis » 2016-01-05, 13:12

Ha! Ha! For moon, perhaps Jupiter
Tak FS60C, APM-LOMO 80/480, APM-TMB 105/650, SW Black Diamond 120ED, Borg 125SD, SW 12" Dobs , Lunt LS35T, Lunt LS80T
TMB Super Mono 4mm, Pentax XO 2.5mm, Baader Planetarium 8-24mm, Nagler (2-4mm, 3-6mm, 13mm), Ethos (3.7mm, 6mm, 10mm), Explore Scientific 100º (14mm, 20mm)
DBK 21, DMK 21, DMK 41, DMK 51, ASI 178MC
Nikon D810A, Canon 5D II, Fujifilm X-T10
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willis
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文章: 1526
註冊時間: 2010-02-01, 17:50
來自: HK


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