香港天文論壇

you may have a look on this link.

http://www.cloudynights.com/documents/3mounts.pdf

clcwong 寫:唔該呀^^!

Folks: We have tried to discuss real science with a 「九龍皇帝」 type of friend from the mainland. The understanding of the world is different among us. So, I think it is right time for me to stop here because I have plenty of stuff to do, including planning the next messier object to shoot when my new to...

Yes, agreed. The whole thread of the so-called 「Astro theory」 makes me ( I means as a Chinese) humiliated and this thinking was very strong when I was visiting Beijing during last Month for the souvenir shops selling 「皮優」 for their extra-ordinary ability to give fortune to the owner. The underlying ...

No. it is also very good for use in day to day photo taking.

Dear Chanlunlun,

have you considered to issue the process of making the 30 inch scope into S&T magazine

Due to no space in home, the following item is re-opened for sale: 1)Vixen SS100 OTA, 100mm aperture, 680mm focal length, over 90% new, come with original carrying bag, helical focuser. 2)Tan-14-made aluminium-cell / badder solar filter unit for SS100 3)William optics VR-1 1.25」 violet reduction fil...

I gone to xiu kuan before, it is very wet & cold in winter time. however, for star gazing, it is a good place for 石坑崆, it was windy at night. I gone there in the evening and the team only stayed for 1 hour ( too windy for the place and we are too hungry for the dinner) . however, the winter milky wa...

Dear Raymond, you may refer to following link. http://www.hkastroforum.net/bbs/viewtopic.php?t=831 Eye piece projection is usually set up for digital camera whose lens cannot be removed, while prime focus is used for DSLR. Any diagramme or website to show the setup for Eye piece projection for DSLR ?

a general description on zodiac can be found in Hong Kong space museum 's home page:

http://www.lcsd.gov.hk/CE/Museum/Space/ ... _index.htm

pls serach for :
黃 道 十 二 宮

august 寫:請問：
點解2000年會命名為白羊座(21Mar~20Apr)的年代？而不是雙魚座(20Feb~20Mar)

When I was studying A-level, I found applied mathematics is more difficult than pure Mathematics. However, when I attend university, I soon found that such feeling was due to the lack of good A-level text books and the text book used by me always jump steps and lead to confusion. I 『d recommend matr...

Dear all,

the scope is reserved to an astro-farmer. thanks all for interested.

Dear Wah!,

ss2k refer to Vixen 's goto system sky sensensor 2000. FYI, I have also used some Sk2 product when I was young.

price reduced to HKD $1400 (only consider to sell the scope in HK)

AFAIF, Viper is still in production BTW, I purchase this scope is for testing of the electronics of Viper with my SS2k. the joy stick controller is an expert design and traditional push-button controller ( N,S, E,W with speed setting) is clumsy and difficult to use!! 你果然係Vixen既hardcore fans, 連祗係出過一段...

actual picture of my viper with original gift box in the background

the mail system of hkastroforum seems to have problem. interested party of the vixen viper scope may conatct me via gpolam@yahoo.com directly