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Raymond
24-08-2005, 11:34 PM
Dear all,

7 images of 6 min each at ISO 800 captured on 14-07-2005 in Hong Kong by TEC140 F7 APO refractor and Canon 350D (unmodified) on EM200, autoguided by ST402XME.

Processing is not satisfactory. Just treat it as one exercise.

Updated link here :
http://www.hkastroforum.net/bbs/files/ngc6992-050714c.jpg
(190K file)

Raymond
beren
24-08-2005, 11:55 PM
Very nice ,well done.....do you use any LP filters?
asimov
25-08-2005, 12:35 AM
Thats a very nice capture Raymond. Good work.
Raymond
25-08-2005, 12:37 AM
Yes, Beren, I have used Hutech LPS P2 48mm filter. It helps a lot to suppress street lights nearby.

Raymond
iceman
25-08-2005, 06:51 AM
Very nice shot, it's too low for me to see down here.

What can you see visually?
[1ponders]
25-08-2005, 07:33 AM
Gee I'd like to see that when you think you've got the processing right. I like that shot a lot. :thumbsup:
Raymond
25-08-2005, 10:16 AM
Dear Iceman,

I use TEC140 mainly for imaging. In fact no visual so far, as I am busy with trying the autoguiding parameters. When the autoguiding problem (tighter and round stars in much longer exposure cannot be achieved now) is solved,
I shall settle down and enjoy the visual through Denk II binoviewer.

Raymond
ving
25-08-2005, 10:54 AM
tis my understanding that it is hard to see visually?!
correct?
atalas
25-08-2005, 12:36 PM
Nice shot Raymond ,I'd like to see a bigger version of It ....the link doesn't work.


Louie :thumbsup:
Raymond
25-08-2005, 11:16 PM
dear Atalas,

I have updated the image link in the top thread.

It is quite possible to do visual observation in HK when the sky is clear, and when dust/haze pollution is not serious.

However, I mainly view through my CZ 12.5 F5 mirror dob which unfortunately is located in my home where seeing and light pollution are serious. So only good for the planets but not DSOs.

I do astro imaging with TEC140 F7 which is located in a darker sub-urban area. Since TEC F7 is an oil-based triplet APO, views through it should be splendid as well. Just no time to view through it when I am busy with imaging. Usually I try to image several DSOs a night. You know, too many worthy objects for imaging when the sky is clear and transparent.

Raymond.