Cloudy nights at 12/21/10 04:23 AM
Dear ALL ,
Pls let me explain a bit of the background in building the Observatory by own .
The observatory was completely built on october 31th of ASTRONOMY year 2009 .
I decided to build it , on the right time of the year .
Structure Design started on Augest,2009 .
The design tooks time in considering the building size , the usage ,the cost ,etc ...
as much as I can think about it at that time ,for nearly 1 months time .
I had confirmed the drawings finally , the diagram draws the detail structure and size of 3 main components ,
and I passed them to 3 different local makers in a city near Hong Kong , the shenzhen(china). It that case ,
the cost was much lower . They made it according to my drawings and according my ideas talking through several meetings with them .
The 3 components consist of a Halfly-opened Dome, Iron track and a curved Door .
The 3 components must be compatible in size and can be matched well to the overall structure of the final building ,
before they are completely made and transported to my home . So , that's real difficluty at that time .
Any wrong dimension of the 3 components will cause big trouble in final stage when making the building wall .
The buiding wall is made by my uncle and me together .
In the past one year time of my astronomy hobby , I use the observatory very oftenly , I like taking photos . Though the weather is not always fine . It's always the cloudy nights . However , Finally I had decided to expand my usage of the observatory in 3 ways mainly , such that I still can use my telescope imaging system , at any time that I would like to use , to reduce the weather effect to much lower level .
The 3 ways are , First of all , I take image of the plants over the hill, the visual position of each plants is recorded down by RA and DEC scale such that I can find them easily at any time for repeatly observation . Plants imaging can be any time (day time and night time ) by using the meade DSI imager . 2ndly , I take image of the moon craters . I use the moon map to find the craters under over 100X magification . Each craters are noted down as images , by DSI imager or a self modified web cam . There are so many craters on the moon , as well as the nearby scenery on the moon surface , each one is recorded as photo . That is always a big fun .
3rdly , in some clear nights , I take images of DSO . That is a challenging task as all we amenturs can know it . So far I am still trying on the way . My first target is to use low pricing equipments( less than 3000HKD for telescope , mount and DSI-I) to catch up these DSO . I had experience in finding the DSO by simply using the RA and DEC scale of the mount . And catch them as possibily as I can do it . The method I called is 'Manual GOTO" , it can point to the object directly by using the realtive RA and DEC coordinates from the star chat . And of couse need some fine turns of the locations by hand . And finally take photo of it by using DSI-I . So far I found this way is challenging and I enjoy it very much indeed .
MANDII
2010/12/21 |
显身卡
