LtE in CMO #289

From Eric NG



. . . . . . . . .Date: Tue, 9 Mar 2004 12:45:57 +0800

Subject: 20030308 Jupiter

 

Dear friends,

No imaging for more than 2 months already. Finally I completed the new setup of a 10" Newtonian at my roof. :-) Last night has fixed the balancing problem of the newtonian and polar aligned the scope (no polar star can be seen at my site). Finally still got time to have a few test shots. :-) The Royce mirror has been recoated and the reflectivity was so much improved!!!

Attached were two Jupiter images captured last night, seeing was fair and transparency was terribly low. heheh. As long time no imaging/processing, I totally forgot my processing routine already. Have to spend a bit time to recall them. Anyway, my imaging session is resumed already.

http://www.ort.cuhk.edu.hk/ericng/jup_2004Mar08_1529_1600_eric.jpg

heheh. You may be interested to take a look how I solve the balancing problem with the "unknown" metal clamps on the door handle. :-)

http://www.ort.cuhk.edu.hk/ericng/balance-01.jpg

http://www.ort.cuhk.edu.hk/ericng/balance-02.jpg

http://www.ort.cuhk.edu.hk/ericng/balance-03.jpg

Cheers,

. . . . . . . . .Date: Wed, 10 Mar 2004 16:58:18 +0800

Subject: 20040309 Jupiter

 

Dear friends,

Attached Jupiter shots were captured tonight. Transparency was very bad again. This time I used F34 to achieve higher focal ratio though the gain set to 70%.

http://www.ort.cuhk.edu.hk/ericng/jup_2004Mar09_1423_eric.jpg

http://www.ort.cuhk.edu.hk/ericng/jup_2004Mar09_1642_eric.jpg

http://www.ort.cuhk.edu.hk/ericng/jup_2004Mar09_1655_eric.jpg

 

I am sure the image quality can be improved if the transparency can be better!

Kind Regards,

 

. . . . . . . . .Date: Fri, 12 Mar 2004 10:42:41 +0800

Subject: 20040311 Jupiter

 

Dear all,

Attached was the Jupiter captured last night. Cloudy before mid night, so could not get decent images when Jupiter at zenith position. I must say that the sky condition was far from last year ... Probably due to severe air pollutant blew from Mainland China industrial area ... Now seldom get a night with high transparency and stable seeing...

 

http://www.ort.cuhk.edu.hk/ericng/jup_2004Mar11_1520ut_eric.jpg

 

Regards,

 

. . . . . . . . .Date: Mon, 15 Mar 2004 09:41:37 +0800

Subject: 20040314 Jupiter

 

Dear friends,

Spring season in Hong Kong already, maritime air stream with fog affecting Hong Kong. But lucky, still able to capture some Jupiters. :-) Quite dark projections can be seen on EZ.

 

http://www.ort.cuhk.edu.hk/ericng/jup_2004Mar14_1457_1516UT_eric.jpg

 

Cheers,

 

. . . . . . . . .Date: Tue, 16 Mar 2004 11:53:56 +0800

Subject: 20040315 Jupiter

 

Dear friends,

Here is one of the formula for planetary imager:

Clouds + Fog + sleepy = Lousy Image.

Anyway still some details can be captured. :-)

 

http://www.ort.cuhk.edu.hk/ericng/jup_2004Mar151342_eric.jpg

 

Awaiting clear skies!

 


Eric NG (Hong Kong)


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