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ASA_AstroSystemeAustria· ASA Astrographs and Mounts
Hello Gerhard, Congratulations, a very good first light. I am glad you do not have flexure problems. Could you please tell me how is the configuration you use?...
Hallo Antonio, I'm guiding through a TMB 80/f6 with the Loadstar from Starlight XPress. The guiding telescope is mounted with very sturdy tube rings from...
Hi Gerhard, Thank you very much for your answer. I definitely have differential flexure but up to now I could not identify the source of the problem. I use a...
Hi folks: I'm having a difficult time getting a decent flat using my new ASA 10N f/3.6 and STL11K. I've tried using a 10" flat lightbox, dusk flats, and flats...
Hi Gregg, It would be helpful to look at the fits files. Can you provide me with one of a flat and with one of an image? Please split it on two e-mails: ...
Gregg two comments: one is that I suspect you have a light leak. Newtonians can be flooded pretty easily if the baffling isn't just so. Ditto getting...
Richard: Thanks for those tips. I did try shooting the flats in darkness but I think you're right about the light scattering in the fast Newt. I will try ...
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ASA_AstroSystemeAustr...
Sep 4, 2008 2:36 pm
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the ASA_AstroSystemeAustria group. File :...
in the book "design and construction of large optical telescopes:" edited by Pierre Bely (Springer) Bely outlines a rigorous procedure for stray light control...
Gregg, Had a look at your flats and agree with Richard, it seems your system is capturing stray ligth. I have the same system (OTA and camera) as yours and use...
Antonio that looks like a very good solution for avoiding the light leaking that we suspect to be the root-cause of Gregg's flat-field problems Thanks for...
Gregg, I agree with using a dew/light shield. I use an AstroZap Flexible. It works great for capturing extraneous off axis light. Tom ... system is ... dew ...
Antonio: My first thought was to try a dew shield of some sort (and the steps that Richard suggested). I think that because the camera is mounted 'upside...
Antonio: I forgot to ask - which Kendrick dew cap do you use? Gregg visit my astronomy site: www.ruppel.darkhorizons.org ... From: Antonio Fernandez To:...
Gregg Let me add one comment to this solution proposal: while a dew shield will help the problem, the root cause will not be solved and that is the failure...
Hi Folks, It's been a long while since I had the chance to post a new image here. Anyway, here comes an image acquired this summer. Ha data was acquired in...
Hello Antonio, i love it. good shot, Knut ... From: Antonio Fernandez To: ASA_AstroSystemeAustria@yahoogroups.com Sent: Saturday, September 06, 2008 1:57 PM ...
Sorry, but I have a (perhaps stupid?) question: I have downloaded from the ASA website and installed the software for the OK 3 focuser , but I don't find the...
Hi Enzo: it is not a stupid question, and I have been driven mad by the same problem. I fixed it by installeng the driver for the FAKE usb cable. I say that is...
Hi Enzo, When you plug in the ASA focuser into the USB port it is recognized as a new HW and the popping up installer will ask for drivers. Select the option...
Hi, Last week brought a few clear nights, but transperancy was occasionaly compromised by thin cirrus clouds. By using NB-filters for capturing this immage I...
Hello Everybody A few days ago I was at the ASA factory,and had my first encounter with the DDM85 mount. I was absolutly curious how this beauty would perform...
Thank to all for the suggestions, now the drivers are installed and they work. And now another question: what kind of AC/DC Adapter (12V? how much Amp?) I must...
Hi Wolfgang, yes the new ASA Mount works very good. But the mount you has used last week was not the DDM85 it was the smaller prototype! We hope the...
Scheduled Maintenance:
We are undertaking some essential, but extensive maintenance to improve Yahoo!
Calendar. Your Group Calendar is being migrated to a much improved version of
Yahoo! Calendar. During the maintenance period, you may not have access to your
Groups Calendar.
We sincerely apologize for this inconvenience. Your Groups Calendar is in great
shape and we are working to have it available again as quickly as possible
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