Hello Richard, What about SII on Horsehead, do you have some signal ? I never tried it before. Someone had tried an real SII Ha OIII on horsehead ? This final...
This is an Ha/SII image only Nicholas there's on [OIII] that I have found there I used the Ha for red, used [SII] for Green and used [SII] + 15% Ha for Blue ...
i did not shoot [oiii] so far this year when I last shot it in 2005 I believe I took a binned [OIII] exposure and didn't find much signal. I can't say there is...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the narrowbandimaging group. File :...
narrowbandimaging@yah...
Feb 6, 2008 2:17 pm
5943
Chris Brennan of the UK recently took some narrowband data in Eta Carina from Barbados. Chris was nice enough to let me have access to his unprocessed FIT data...
I prepared a chart showing the minimum detection limit in Lux at 550nm for a telescope, filter. camera system to keep the dark current out of the equation, i...
Hi, I need some information about g2v colour calibration. At the moment I'm testing some hipparcus stars for calibrating R.G.B. channels. How do you do the...
i don't make any attempt to do that Nico and here is why: the major task I try to do when processing tricolor emission line data is to get similar shaped...
I saw an interesting derivation in a Janesick paper some time back as to the minimum detectable lux (defined as s/n = 1) you can look at it for different...
Hello Folks, For some time now, I have been interested in building an All-Sky camera for remote use at our JMSM Observatory. Since weather play a significant...
Very cool setup. How long was the exposure time for the images on your test page? ... Maker of high quality carbon fiber scope tubes ... From: Michael Sherick ...
Hi Frank -- The exposure was set for 8 seconds, with the Gain set for best contrast. These settings/exposure values will be set automatically with the VB...
After a little bit of advice as I'm a newbie to imaging and have seem some conflicting messages, suggesting that the ETX125PE is probably unsuitable for...
The mirror flop will kill you. Furthermore it is a slow scope requiring a good mount once the flop is fixed. I tried to get some use out of an ETX125 for my...
These comments may seem hash but they aren't. The name of the game is to have as few instrumental problems to juggle as possible. After you have done that you...
Did you take any shots at 30 seconds? ... Maker of high quality carbon fiber scope tubes ... From: Michael Sherick To: narrowbandimaging@yahoogroups.com Sent:...
Hi Frank, Yes. 30 second exopsures work fine, but are a bit too long for the All-Sky camera application, with around 8 seconds for night. We are keeping the...
What didn't you like about 30 second exposures? The reason I'm asking is because I would be interested in getting the most stars possible in my images if I...
Here is a vid I made using my home built "AllSkyCam". It's not really "All Sky" since the field is about 90 degrees or so. My main goal is to capture meteors...
what a cool project Mike keep us updated on the progress rdc Michael Sherick <michaelsherick@...> wrote: Hi Frank, Yes. 30 second exopsures work fine,...
Hello all...I am new to this list and new to imaging with my Astrodon 3nm H-a filter, so I am glad to be here now with all of you experts. I use TheSky6 and...
since when does Astrodon create a 3nm Halpha filter? is that a new development David? Classically he made 6nm and recently created a 5nm filter but I haven't...
David, As said Richard, nebulae disapears this period of year ! I prepare my sessions with "Desktop Universe", this software is a real view of the sky and use...
if anyone is interested, I will be giving a one hour talk today at 2000UTC on the World Wide Astrocast. This is the second in a series of lectures sponsored by...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
