Pentax 100 SDUFII 測評

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Re: Pentax 100 SDUFII 測評

文章

Nebulas » 2010-05-17, 19:50

劳心劳力,表现不俗。

用胶片的情况下,此镜和其他镜子的差距没有那么明显。玩的是心情和对工艺的回忆。
以前看书学天文,后来用望远镜学习天文,现在用纸笔想象天文!
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文章: 1927
註冊時間: 2010-04-08, 12:36
來自: Wuhan, Hubei Province, P.R.China

Re: Pentax 100 SDUFII 測評

文章willis » 2010-05-17, 23:57

Lewis 寫:
benben88 寫:Let the photo speak for the scope.


這句可能會變成金句......
但是否要變變.....

Each photo is the product of the combined effect of all equipments you used.
Willis,
Maybe change it to "Let the photo speak for all".

Lewis


The wording is not the main issue, but the attitude. It is used to remind people that 事實勝於雄辯!真的假不了,假的真不了。
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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Re: Pentax 100 SDUFII 測評

文章willis » 2010-05-18, 00:05

Last night we tried this F4 Pentax. The finish is good and the tube is strongly built. In terms of visual performance, it certainly cannot beat nowadays APO. The CA is similar to a good ED doublet. The photo spoke for the photographic performance already. I would say it is a good collector items.
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 100 SDUFII 測評

文章社長 » 2010-05-18, 00:16

as the owner of this telescope, personally I would be a little more conservative, the CA is about a normal ED doublet, not bad for such a short focal ratio, but definitely not comparable to those high class ED doublet, like those F8 or F10 ones, e.g., Nikon 100 F10 ED doublet.

of course, this telescope is not for high resolution visual work, so still very good for its intended purpose - wide field deep sky, comet, lunar or solar eclipse work.
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 100 SDUFII 測評

文章Nebulas » 2010-05-18, 11:20

Thanks for the work from you! It seems that Worth to USE and collect the SDUF II.
以前看书学天文,后来用望远镜学习天文,现在用纸笔想象天文!
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Nebulas
 
文章: 1927
註冊時間: 2010-04-08, 12:36
來自: Wuhan, Hubei Province, P.R.China

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